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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Форма поиска

Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
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Применить Всего найдено 3019. Отображено 100.
22-03-2012 дата публикации

Thermally protected resettable GFCI

Номер: US20120069476A1
Автор: Steve FABIAN
Принадлежит: Individual

An improved GFCI monitors the balance of current passing through the device, and as long as the difference between current coming in and going out stays within a given range, normally 5 ma, the device remains in the active setting. If sensed current does not remain in balance, or within the given range, a voltage source is generated, signaling the comparator/controller to trip a solenoid. A solenoid trip results in disconnection of both line and neutral on the face contacts, with power being shut off to the load, and with the load terminals disconnecting all receptacles downstream. A mechanical or electronic switch, being located across the SCR, is activated by a thermal sensor detecting abnormal temperatures, which may also trigger the solenoid, in addition to it being triggered when leakage is detected. The sensors can be placed directly on to the surfaces to be monitored for maximum heat transfer.

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Номер записи: 1
22-03-2012 дата публикации

Residual-current circuit breaker

Номер: US20120069484A1
Автор: Gerhard Dobusch
Принадлежит: Moeller Gebäudeautomation GmbH

A residual-current circuit breaker includes at least one summation current transformer through which are guided at least one first conductor and one second conductor of an electric network to be protected. At least one secondary winding is arranged on the summation current transformer and connected in terms of circuitry to a trip element. A test circuit connects the first conductor with the second conductor and includes at least one first test resistor, a second test resistor arranged serially in relation to the first test resistor in terms of circuitry, and a test button. The second test resistor is bridged by a shunt line which is guided through the summation current transformer. Arranged in the shunt line in terms of circuitry is at least one first voltage-dependent resistor.

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Номер записи: 2
12-04-2012 дата публикации

Ground-fault circuit interrupter

Номер: US20120087050A1
Автор: Georg Ritzinger
Принадлежит: Eaton GmbH

A ground-fault circuit interrupter has a test circuit for generating a test fault current. The test circuit includes a test button, a first test resistor, and a regulating circuit constructed to generate a test fault current with a predetermined and substantially constant value independent of an applied voltage of an electrical network to be protected. The test button, the first test resistor and the regulating circuit are connected in series between phases of the electrical network.

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Номер записи: 3
07-03-2013 дата публикации

Circuit breaker and method for checking a rogowski converter in a circuit breaker

Номер: US20130057307A1
Автор: Andreas Fischer
Принадлежит: SIEMENS AG

A circuit breaker is disclosed. A Rogowski converter is checked for wire breakage by applying the Rogowski converter with a voltage which is output by a digital/analog converter in response to a digital signal. The digital signal is dependent on the switch rated current of the circuit breaker.

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Номер записи: 4
23-05-2013 дата публикации

PROTECTION RELAY APPARATUS

Номер: US20130128402A1
Автор: Ohno Hirofumi, OTOMO Yu
Принадлежит: KABUSHIKI KAISHA TOSHIBA

According to one embodiment, there is provided a protection relay apparatus that protects lines of a three-phase alternating current power system, the protection relay apparatus including a fault detector to detect a fault of the line, an opening unit to open a circuit breaker of a fault phase in which the fault has occurred through detection of the fault, a fault phase voltage measurement unit to measure a voltage of the fault phase after the circuit breaker is opened, a fault recovery determination unit to determine whether the fault is recovered or not based on the voltage, and a closing unit to close the circuit breaker when the fault recovery determination unit determines that the fault is recovered. 1. A protection relay apparatus that protects lines of a three-phase alternating current power system , the protection relay apparatus comprising:a fault detector configured to detect a fault of the line;an opening unit configured to open a circuit breaker of a fault phase in which the fault has occurred through detection of the fault by the fault detector;a fault phase voltage measurement unit configured to measure a voltage of the fault phase after the circuit breaker is opened by the opening unit;a fault recovery determination unit configured to determine whether the fault is recovered or not based on the voltage measured by the fault phase voltage measurement unit; anda closing unit configured to close the circuit breaker when the fault recovery determination unit determines that the fault is recovered.2. The protection relay apparatus according to claim 1 , whereinthe fault recovery determination unit determines that the fault is recovered when the voltage measured by the fault phase voltage measurement unit is equal to or higher than a preset voltage after an elapse of a preset time after the circuit breaker was opened by the opening unit.3. The protection relay apparatus according to claim 2 , whereinthe fault recovery determination unit determines that the ...

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Номер записи: 5
06-06-2013 дата публикации

Methods and apparatus for continuous ground fault self-test

Номер: US20130141110A1
Автор: Artur J. Lewinski, Ross Teggatz, Thomas E. Cosby
Принадлежит: Texas Instruments Inc

Methods and apparatus for continuous ground fault self-test are disclosed. An example ground fault detection device includes a sense coil to detect current in a line conductor and a neutral conductor, the sense coil comprising a winding influenced by a current difference between the line conductor and the neutral conductor. The example ground fault detection device also includes a current bypass to facilitate a continuous current imbalance detected by the sense coil, and a ground fault detector circuit to detect at least one of the continuous current imbalance in the sense coil or a ground fault current imbalance.

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Номер записи: 6
27-06-2013 дата публикации

Power circuit breaker

Номер: US20130162378A1
Автор: Andre Borgwardt, Andreas Krauss, Aron-Ernst Musiol, Gerd Müller, Peter KOPACZEWSKI, Thomas Driehorn
Принадлежит: SIEMENS AG

A power circuit breaker is disclosed wherein an electric current is monitored by an electronic trip unit in order to detect an electrical fault. In an embodiment, a first magnetic device of the power circuit breaker, in the event of a fault being detected, is configured to be excited which, when it is excited, trips a trip mechanism via a plunger. As a result of tripping, the trip mechanism disconnects two contacts via which the current flows. The power circuit breaker of an embodiment includes a second magnetic device which is likewise able to be excited by the ETU and by which the trip mechanism is likewise able to be tripped.

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Номер записи: 7
25-07-2013 дата публикации

INK JET PRINTING METHOD AND PRINTER

Номер: US20130187973A1
Автор: DE JONG Jos, DE SMET Sebastian P.R.C.
Принадлежит: OCE-TECHNOLOGIES B.V.

In an ink jet printing method, a recording medium is moved relative to a print head having a plurality of nozzles, and ink droplets are ejected from the nozzles onto the recording medium in a single pass in accordance with print data supplied to the print head. Spit pattern data is included in the print data A location of an expected ink dot ejected according to the spit pattern data is scanned, providing a scanned image, and such ink dot is searched for in the scanned image in order to determine an actual presence of the ink dot. 1. An ink jet printing method , wherein a recording medium is moved relative to a print head having a plurality of nozzles , said method comprising the steps of:a) adding spit pattern data to print data to be printed by the print head;b) supplying the print data and the added spit pattern data to the print head;c) ejecting ink droplets from the plurality of nozzles onto the recording medium in accordance with the print data and the spit pattern data in a single pass of the recording medium along the print head;d) scanning a location of an expected ink dot ejected according to the spit pattern data by a nozzle of the plurality of nozzles, thereby providing a scanned image;e) analyzing the scanned image in order to determine an actual presence of the expected ink dot; andf) if it is determined that the expected ink dot is absent, applying nozzle failure correction during the same pass for the nozzle intended to eject the ink dot with respect to the ink droplets that still have to be ejected onto the recording medium and were intended to be ejected by the nozzle.2. The method according to claim 1 , wherein the spit pattern data is configured to control a nozzle of the plurality of nozzles to eject an isolated dot in a background area of an image to be printed on the recording medium according to the print data.3. The method according to claim 2 , further comprising the step of printing in multiple colors claim 2 , wherein the spit pattern ...

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Номер записи: 8
22-08-2013 дата публикации

Leakage detection breaker

Номер: US20130215538A1
Автор: Kiyoshi Gotou
Принадлежит: Panasonic Corp

A leakage detection breaker includes a current transformer configured to detect a leakage current, and a leakage determination unit configured to determine DC and AC leakages based on an output signal from the current transformer. The leakage detection breaker further includes a power supply cut-off unit configured to cut off a supply of DC or AC power when the current leakage determination unit determines the occurrence of the DC or AC leakage.

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Номер записи: 9
05-09-2013 дата публикации

Circuit for protecting against reverse polarity

Номер: US20130229738A1
Автор: Michael Gueltig
Принадлежит: INIT Innovative Informatikanwendungen in Transport Verkehrs und Leitsystemen GmbH

A circuit for protecting an electric load against reverse polarity is provided by using a MOSFET (metal oxide semiconductor field-effect transistor), wherein: the circuit is connected on the input side to a voltage supply and on the output side to the load; the source connection of the MOSFET is connected to the voltage supply; the drain connection of the MOSFET is connected to the load; the circuit has dynamic behavior similar to a diode and at the same time low power loss; the gate of the MOSFET is connected to the collector of a first bipolar transistor; the source of the MOSFET is connected to the emitter of the first bipolar transistor; the base of the first bipolar transistor is controlled by a control current; and the control current is derived from the voltage at the drain of the MOSFET.

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Номер записи: 10
26-09-2013 дата публикации

Protection device with a sandwiched cantilever breaker mechanism

Номер: US20130250459A1
Автор: David A. Finlay, Sr., Jeffrey C. Richards, Kent R. Morgan, Patrick J. Murphy, Richard Weeks
Принадлежит: Pass and Seymour Inc

The present invention is directed to a protective electrical wiring device that includes at least one first stop member disposed proximate at least one first conductor. The at least one first stop member is configured to limit the movement of the at least one first conductor when the circuit interrupting assembly moves between the reset position and the tripped position such that a gap is established between the plurality of circuit interrupting contacts in the tripped state, the gap being substantially greater than or equal to a predetermined distance.

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Номер записи: 11
03-10-2013 дата публикации

Method and Inkjet Printer for Acquiring Gap Information

Номер: US20130257935A1
Автор: ARAKANE Satoru
Принадлежит: BROTHER KOGYO KABUSHIKI KAISHA

A method is provided that is implemented on a control device connected with an inkjet printer, which includes an inkjet head having an ink discharging surface, a head scanning unit reciprocating the inkjet head relative to a recording sheet along a scanning direction parallel to the ink discharging surface, and a wave shape generating mechanism deforming the recording sheet in a predetermined wave shape that has tops of portions protruding in a first direction toward the ink discharging surface and bottoms of portions recessed in a second direction opposite to the first direction alternately arranged along the scanning direction, the method including acquiring gap information related to a gap between the ink discharging surface and each individual one of the tops and the bottoms on the recording sheet, and determining whether the gap information acquired for each individual one of the tops and the bottoms is abnormal. 1. A method configured to be implemented on a control device connected with an inkjet printer , the inkjet printer comprising:an inkjet head configured to discharge ink droplets from nozzles formed in an ink discharging surface thereof;a head scanning unit configured to reciprocate the inkjet head relative to a recording sheet along a scanning direction parallel to the ink discharging surface; anda wave shape generating mechanism configured to deform the recording sheet in a predetermined wave shape that has tops of portions protruding in a first direction toward the ink discharging surface and bottoms of portions recessed in a second direction opposite to the first direction, the tops and the bottoms alternately arranged along the scanning direction, the method comprising steps of:acquiring gap information related to a gap between the ink discharging surface and each individual one of the tops and the bottoms on the recording sheet; anddetermining whether the gap information acquired for each individual one of the tops and the bottoms on the recording ...

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Номер записи: 12
10-10-2013 дата публикации

LIQUID DISCHARGE DEVICE AND LIQUID DISCHARGE METHOD

Номер: US20130265362A1
Автор: Toya Akihiro
Принадлежит: SEIKO EPSON CORPORATION

A liquid discharge device includes a head, a carriage, an optical sensor and an outlet port. The head is configured and arranged to discharge liquid. The carriage is configured and arranged to move the head in a prescribed direction. The optical sensor is provided on the carriage further to an edge part side in the prescribed direction than the head, and configured and arranged to detect presence or absence of foreign matter when the carriage is moving in the prescribed direction. The outlet port is provided on the carriage so that air is blown through the outlet port from behind a surface of the optical sensor toward a front. 1. A liquid discharge device comprising:a head configured and arranged to discharge liquid;a carriage configured and arranged to move the head in a prescribed direction;an optical sensor provided on the carriage further to an edge part side in the prescribed direction than the head, and configured and arranged to detect presence or absence of foreign matter when the carriage is moving in the prescribed direction; andan outlet port provided on the carriage so that air is blown through the outlet port from behind a surface of the optical sensor toward a front.2. The liquid discharge device according to claim 1 , wherein a light projecting unit configured and arranged to irradiate light along a direction intersecting the prescribed direction, and', 'a light receiving unit configured and arranged to receive the light irradiated from the light projecting unit,, 'the optical sensor includes'}the outlet port is respectively provided corresponding to the light projecting unit and the light receiving unit.3. The liquid discharge device according to claim 1 , whereinthe optical sensor is a retro-reflective type sensor, and a reflective plate disposed on the edge part side of the carriage, and configured and arranged to reflect the light irradiated from the optical sensor to the optical sensor, and', 'an outlet port corresponding to the reflective plate ...

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Номер записи: 13
21-11-2013 дата публикации

Self-Testing Features of Sensing and Control Electronics for a Power Grid Protection System

Номер: US20130308229A1
Автор: Craig Eid, David Blake Jackson, Frederick R. Faxvog, Gale Nordling, Greg Fuchs, Terrance R. Noe, Wallace Jensen
Принадлежит: Emprimus LLC

Systems and method for detecting potentially harmful harmonic and direct current signals at a transformer are disclosed. One system includes a protection circuit electrically connected to a transformer neutral, the transformer electrically connected to a power grid, the protection circuit including a DC blocking component positioned between the transformer neutral and ground and one or more switches selectively actuated to form a path between the transformer neutral and ground in the event of unwanted DC current at the transformer neutral. The system also includes a control circuit electrically connected to the protection circuit and positioned to selectively actuate the switches based on observed conditions within the protection circuit. The system further includes a plurality of test connections disposed within the protection circuit and useable to test electrical properties of the protection circuit.

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Номер записи: 14
07-01-2021 дата публикации

IMAGE FORMING APPARATUS AND METHOD, ABNORMAL NOZZLE DETECTION METHOD, AND PRINTED MATTER MANUFACTURING METHOD

Номер: US20210001638A1
Автор: Shibata Hiroyuki
Принадлежит: FUJIFILM Corporation

Provided is an image forming apparatus and a method, an abnormal nozzle detection method, and a printed matter manufacturing method that can suppress the consumption of an extra medium and can efficiently specify an abnormal nozzle. The image forming apparatus () includes a print head () that has a plurality of nozzles, an association unit () that associates the nozzle with a partial region in a user image, a first correction unit that performs a first correction assuming that the associated nozzle is abnormal in at least one of the partial regions, a streak detection unit () that detects streak information from a print result of the user image including the partial region subjected to the first correction, and a nozzle state estimation unit () that estimates a state of the nozzle on the basis of the streak information of two or more partial regions in a single user image. 1. An image forming apparatus comprising:a print head that has a plurality of nozzles for ejecting a liquid droplet;an association unit that associates the nozzle with a partial region in a user image designated as an image of a target whose image is formed by using the print head;a first correction unit that performs a first correction assuming that the associated nozzle is abnormal in at least one of the partial regions;a printing control unit that causes the print head to print the user image including the partial region subjected to the first correction;a streak detection unit that detects streak information from a print result of the user image including the partial region subjected to the first correction; anda nozzle state estimation unit that estimates a state of the nozzle on the basis of the streak information of two or more partial regions in a single user image printed by using the print head.2. The image forming apparatus according to claim 1 , further comprising:a second correction unit that performs a second correction that suppresses a visibility of streaks due to an abnormal ...

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Номер записи: 15
05-01-2017 дата публикации

IMAGE PROCESSING APPARATUS AND IMAGE PROCESSING METHOD

Номер: US20170001432A1
Автор: Hori Shinjiro, Ikeda Tohru, Ishikawa Tomokazu, Kagawa Hidetsugu, Suwa Tetsuya, Tanaka Wakako, Yanai Yumi
Принадлежит:

An image processing apparatus has: a generating unit configured to generate inspection target image data on the basis of read image data; a setting unit configured to set inspection target areas from the inspection target image data; and an extracting unit configured to extract a unique portion by applying a predetermined process to the set inspection target areas. The setting unit sets the inspection target areas so as to make the ratio of inspection target areas to the entire image area of the inspection target image data in a predetermined direction larger than the ratio of inspection target areas to the entire image area in a direction intersecting with the predetermined direction. 1. An image processing apparatus adapted to detect a unique portion extending in a predetermined direction from a printed image , the image processing apparatus comprising:a generating unit configured to generate inspection target image data on a basis of read image data resulting from reading the image;a setting unit configured to set inspection target areas in the inspection target image data; andan extracting unit configured to perform an image processing for extracting the unique portion of the inspection target areas set by the setting unit, whereinthe setting unit sets the inspection target areas so as to make a ratio of a range occupied by inspection target areas to an entire image area of the inspection target image data in the predetermined direction larger than a ratio of a range occupied by inspection target areas to the entire image area in a direction intersecting with the predetermined direction.2. The image processing apparatus according to claim 1 , whereinthe setting unit sets the inspection target areas so as to make the ratio of a range occupied by the inspection target areas to the entire image area of the inspection target image data in the predetermined direction equal to 100%.3. The image processing apparatus according to claim 1 , whereinthe setting unit: ...

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Номер записи: 16
05-01-2017 дата публикации

EVALUATING PRINT NOZZLE CONDITION

Номер: US20170001433A1
Автор: ANDERSON Daryl E., Fricke Peter James, Gardner James Michael, Martin Eric T.
Принадлежит: Hewlett-Packard Development Company, L.P.

Systems and methods for evaluating the condition of a print nozzle are described. In one example, impedances across the print nozzle are measured. Subsequently, first test result and second test result are determined and registered at a first predetermined time instant and at a second predetermined time instant, respectively. The first test result and the second test result are obtained based on the measured impedances. Based on the first test result and the second test result, the condition of the print nozzle, is determined. 1. A method for evaluating the condition of a print nozzle , the method comprising:measuring impedances across the print nozzle;registering onto a print the circuitry of the print nozzle, at least at a first predetermined time instant and at a second predetermined time instant, a first test result and a second test result, respectively, obtained based on the measured impedances, wherein each of the first predetermined time instant and the second predetermined time instant are measured with respect to a firing pulse;evaluating the condition of the print nozzle based on the first test result and the second test result.2. The method as claimed in claim 1 , wherein the first test result is obtained by comparing a voltage corresponding to the impedance measured at the first predetermined time instant with a threshold voltage.3. The method as claimed in claim 2 , wherein the second test result is obtained by comparing a voltage corresponding to the impedance measured at the second predetermined time instant with the threshold voltage4. The method as claimed in claim 1 , wherein the first test result and the second test result are in the form of a logical output.5. The method as claimed in claim 1 , wherein:the first test result is indicative of whether a drive bubble persisted at the first predetermined time instant; andthe second test result is indicative of whether the drive bubble collapsed and ink within an ink chamber associated with the print ...

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Номер записи: 17
05-01-2017 дата публикации

LIQUID DISCHARGE APPARATUS AND METHOD OF CONTROLLING THE SAME

Номер: US20170001434A1
Автор: Makita Shushi, YAMASHITA Noriaki
Принадлежит:

A liquid discharge apparatus includes a filter configured to filter liquid to be discharged from a nozzle, a vibration detection mechanism configured to detect vibration of ink in an ink flow path generated by the driving of a piezoelectric element as an actuator; and a calculation circuit configured to obtain a detection value obtained by the vibration detection mechanism and perform calculation by using the detection value, wherein the vibration detection mechanism detects vibration of n (1 Подробнее

Номер записи: 18
04-01-2018 дата публикации

LIQUID DISCHARGING APPARATUS, CONTROL METHOD OF LIQUID DISCHARGING APPARATUS, DEVICE DRIVER, AND PRINTING SYSTEM

Номер: US20180001619A1
Автор: FUKUDA Masako, SATO Hironori, SAYAMA Tomohiro
Принадлежит:

A control method of a liquid discharging apparatus includes: a discharge inspection step of inspecting discharge abnormality of a nozzle by a discharge inspection mechanism; a remaining oscillation inspection step of inspecting oscillation of the ink inside a pressure chamber by a oscillation inspection circuit when the discharge abnormality is detected; a first correction step of performing correction which corresponds to the attachment of the resin inside the pressure chamber with respect to the driving pulse when abnormality is detected in oscillation; a re-discharge inspection step of inspecting the discharge abnormality of the nozzle after the first correction step; and a second correction step of performing the correction which corresponds to the attachment of the resin inside the nozzle with respect to the driving pulse when the abnormality is not detected in the oscillation in the oscillation inspection step or when the discharge abnormality is detected in the re-discharge inspection step. 1. A liquid discharging apparatus comprising:a liquid discharging head which includes a nozzle that discharges a liquid containing resin, a liquid flow path that individually communicates with the nozzle, and an actuator that generates pressure oscillation in the liquid in the liquid flow path, and which discharges the liquid from the nozzle by driving of the actuator;a first inspection mechanism which inspects a discharge abnormality of the nozzle;a second inspection mechanism which inspects oscillation of the liquid in the liquid flow path generated by the driving of the actuator; anda control circuit which performs processing of specifying any of attachment of the resin to the liquid flow path or attachment of the resin to the nozzle,wherein the control circuit specifies an attachment position of the resin based on an inspection result of the discharge abnormality by the first inspection mechanism, and an inspection result of oscillation of the liquid in the liquid flow ...

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Номер записи: 19
04-01-2018 дата публикации

LIQUID DISCHARGING APPARATUS AND CONTROL METHOD OF LIQUID DISCHARGING APPARATUS

Номер: US20180001621A1
Автор: HOSOKAWA Yasuhiro, SUZUKI Toshiyuki
Принадлежит:

A liquid discharging apparatus includes a plurality of dischargers that discharge a liquid, a determination portion that determines discharge states of the liquid in the dischargers, and a controller that controls the plurality of dischargers, in which, in a case in which the determination portion determines that the discharge state of the liquid in one discharger is abnormal, the controller controls the plurality of dischargers so as to cause the liquid to be discharged from another discharger instead of causing the liquid to be discharged from the one discharger until a predetermined time has elapsed since determination, and controls the plurality of dischargers so that a repair operation, which repairs the discharge state of the liquid in the one discharger to normal, is caused to be executed after the predetermined time has elapsed since the determination. 1. A liquid discharging apparatus comprising:a plurality of dischargers that discharge a liquid;a determination portion that determines discharge states of the liquid in the dischargers; anda controller that controls the plurality of dischargers,wherein, in a case in which the determination portion determines that the discharge state of the liquid in one discharger is abnormal, controls the plurality of dischargers so as to cause the liquid to be discharged from another discharger instead of causing the liquid to be discharged from the one discharger until a predetermined time has elapsed since determination, and', 'controls the plurality of dischargers so that a repair operation, which repairs the discharge state of the liquid in the one discharger to normal, is caused to be executed after the predetermined time has elapsed since the determination., 'the controller'}2. The liquid discharging apparatus according to claim 1 ,wherein the repair operation is an operation in which the plurality of dischargers discharge the liquid.3. A liquid discharging apparatus comprising:a plurality of dischargers that ...

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Номер записи: 20
03-01-2019 дата публикации

CONFIGURABLE ERROR HIDING

Номер: US20190001702A1
Автор: GARCIA Jesus, Jeapes Stephen Mark, REYERO Juan
Принадлежит:

Broadly speaking, embodiments of the present technique provide apparatus and methods to print an image using masking techniques that control the operation of a droplet deposition head having at least one faulty nozzle. More specifically, an image is analysed to determine a pixel colour density for each pixel of the image. A masking technique is provided which may distribute the droplets (or sub-droplets) that a faulty nozzle is assigned to print among one or more neighbouring, functioning nozzles. 1. A droplet deposition apparatus comprising:at least one droplet deposition head having a plurality of nozzles arranged in at least one row, the droplet deposition head configured to print an image;an interface for receiving a half-toned image to be printed, the image comprising a plurality of pixels; receive data indicating that a nozzle in a row is faulty;', 'identify each pixel of the image that is assigned to be printed by the faulty nozzle;', 'determine a pixel colour density for each identified pixel;', 'determine a total number of sub-droplets required to provide the determined pixel colour density for each identified pixel;', {'sub': 'max', 'determine the maximum number of sub-droplets SDejectable by at least one neighbouring nozzle located in the vicinity of the faulty nozzle;'}, {'sub': 'max', 'select, using a lookup table, a mask value for the neighbouring nozzle, each mask value specifying zero or more sub-droplets to be printed for each identified pixel by the neighbouring nozzle instead of the faulty nozzle, wherein the mask value for each identified pixel is less than or equal to the maximum number of sub-droplets SDof the neighbouring nozzle;'}, 'generate a mask for the image comprising the selected mask values for the neighbouring nozzle; and', 'operate the droplet deposition head to eject zero or more sub- droplets from the neighbouring nozzle according to the generated mask, such that the determined pixel colour density for each identified pixel ...

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Номер записи: 21
13-01-2022 дата публикации

INKJET RECORDING APPARATUS

Номер: US20220009226A1
Автор: KUROKAWA Yuichiro, MIKASHIMA Katsuo
Принадлежит: KYOCERA Document Solutions Inc.

An inkjet recording apparatus includes a recording head having a plurality of nozzles for ejecting ink, an endless conveying belt conveying a recording medium and having a plurality of openings through which ink is passed when the recording head performs flushing, a reading sensor for reading, in a first reading mode, information on openings in the conveying belt and, in a second reading mode, information on the recording medium on the conveying belt, an ejection control portion for controlling ejection of the ink from the recording head based on at least one of the information on the openings and the information on the recording medium, and a reading mode switching control portion for switching the reading mode of the reading sensor between the first and second reading modes. 1. An inkjet recording apparatus , comprising:a recording head having a plurality of nozzles from which ink is ejected;a conveying belt that conveys a recording medium, the conveying belt being endless and having a plurality of openings through which the ink is passed when the recording head performs flushing in which the ink is ejected from the nozzles with timing different from timing of ink ejection contributing to image formation;a reading sensor that, in a first reading mode, reads information on the openings in the conveying belt and that, in a second reading mode, reads information on the recording medium on the conveying belt;an ejection control portion that controls ejection of the ink from the recording head based on at least one of the information on the openings and the information on the recording medium; anda reading mode switching control portion that switches a reading mode of the reading sensor between the first and second reading modes.2. The inkjet recording apparatus according to claim 1 , whereinthe reading mode switching control portion switches between the first and second reading mode alternately every integral multiple of a formation period for one dot as a unit of ...

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Номер записи: 22
20-01-2022 дата публикации

METHODS FOR ESTIMATING A PROPERTY OF AN ELECTRICAL SWITCHING DEVICE, DEVICES FOR IMPLEMENTING THESE METHODS

Номер: US20220020539A1
Автор: Delbaere Stéphane, Orban Rémy
Принадлежит: Schneider Electric Industries SAS

A method for estimating a property of an electrical switching device includes: 1. A method for estimating a property of an electrical switching device , notably an energy value of an electric arc during an opening phase of the device , the method comprising:detecting a movement of electrical contacts of the switching device beyond an opening threshold;measuring, for at least one phase of the electrical device, the electric current through this phase;evaluating, for at least one phase of the electrical device, the voltage of an electric arc between the electrical contacts that are associated with this phase; andcalculating, for at least said phase of the electrical device, an energy value associated with the electric arc, by numerically integrating the product of the measured electric current and of the evaluated voltage, the integration being performed over a time interval starting from the detection of the movement of the electrical contacts.2. The method according to claim 1 , wherein an anomaly condition is identified if the energy value exceeds a predefined threshold.4. The method according to claim 1 , wherein said time interval is ended on the expiry of a predefined period.5. The method according to claim 4 , wherein the predefined period is equal to 50 ms or to 100 ms.6. The method according to claim 1 , wherein said time interval is ended when the electric current measured for this electrical phase reaches a zero value.7. The method according to claim 1 , wherein the switching device is a contactor including an electromagnetic actuator.8. A method for estimating a state of wear of electrical contacts of an electrical switching device claim 1 , comprising:{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'estimating an energy value associated with an electric arc appearing between electrical contacts of a phase of the device during an opening phase of the contacts, by means of a method according to ; and'}calculating a value representative of a state of wear ...

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Номер записи: 23
08-01-2015 дата публикации

DEVICE AND METHOD FOR PROTECTING AGAINST LEAKAGE CURRENTS

Номер: US20150009593A1
Автор: Aoustin Loïc, Guenot Stéphane, Pradier Jean-Clair
Принадлежит:

Device for protecting against leakage currents, the device being intended to be wired up between a first electrical connection () and a second electrical connection (). 1235. Device for protecting against leakage currents , the device being intended to be connected between a first electrical connection () and a second electrical connection () , characterized in that the device comprises a switch () configured so as to at least partially divert the current flowing in the first electrical connection and controlled by the voltage of the first electrical connection.25. Device according to claim 1 , in which the switch () is configured so as to be closed when the voltage of the first electrical connection exceeds a threshold value.356. Device according to or claim 1 , in which the switch () is a MOSFET transistor claim 1 , the gate of the transistor being connected to the first electrical connection by means of a resistor () claim 1 , and the drain of the transistor is connected to the first connection.49. Device according to any one of the preceding claims claim 1 , comprising a circuit () for limiting the current flowing in the switch.591011. Device according to or claim 1 , in which the circuit for limiting the current () comprises a bipolar transistor () and a limiting resistor () claim 1 , the collector of the bipolar transistor being connected to the gate of the MOSFET transistor and the base of the bipolar transistor being common to the limiting resistor and to the source of the MOSFET transistor.656. Device according to any one of the preceding claims claim 1 , in which the switch () is configured so as to be closed and to at least partially divert the current flowing in the first electrical connection in a first mode of control of the device and to be open in a second mode of control of the device claim 1 , the device furthermore comprising a resistor () forming an input impedance of the device in the second mode of control.713. Device according to claim 6 , ...

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Номер записи: 24
27-01-2022 дата публикации

Safety zone for a maintenance task

Номер: US20220024200A1
Автор: Andreu VINETS ALONSO, Antonio GRACIA VERDUGO, Josep Maria BEL CALAVIA
Принадлежит: Hewlett Packard Development Co LP

Examples relate to a method to print a print job. The method comprise comparing an operational parameter of the print job with a reference operational parameter and determining to perform a maintenance task during the print job based on at least a result of comparing the operational parameter with the reference operational parameter. If the maintenance task is to be performed, the method further comprises determining a safety area on a printable medium and performing a maintenance task on a printable medium.

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Номер записи: 25
14-01-2021 дата публикации

METHOD OF FAST NOZZLE FAILURE DETECTION

Номер: US20210008873A1
Автор: KHALATE Amol A., KLEIN KOERKAMP Koen Joan
Принадлежит: Canon Production Printing Holding B.V.

In a method of nozzle failure detection in an ink jet printer having a plurality of ejection units including a nozzle and an associated liquid chamber with an electromechanical transducer, nozzle failure detection is performed, for each ejection unit, with a given minimum detection frequency. Each nozzle failure detection includes energizing the transducer with a waveform that does not lead to the ejection of a droplet but creates a pressure fluctuation that is sensitive to whether or not the ejection unit is in a malfunction state; measuring the pressure fluctuation in order to detect the malfunction state; defining a mask pattern that is independent of image contents to be printed; and when an image is being printed, performing the nozzle failure detection steps for each ejection unit at timings at which the respective nozzles are in pixel positions that belong to the mask pattern. 1. A method of nozzle failure detection in an ink jet printer having a plurality of ejection units each of which comprises a nozzle and an associated liquid chamber with an electromechanical transducer for energizing a pressure wave in the liquid chamber so as to expel an ink droplet from the nozzle , the method comprising steps of nozzle failure detection to be performed , for each ejection unit , with a given minimum detection frequency , wherein each nozzle failure detection step comprises:energizing the transducer with a waveform that does not lead to the ejection of a droplet but creates a pressure fluctuation that is sensitive to whether or not the ejection unit is in a malfunction state;measuring the pressure fluctuation in order to detect the malfunction state,defining a mask pattern that is independent of image contents to be printed, said mask pattern defining positions of blank pixels on a dark background such that the blank pixels are distributed over an area of an image so finely that they are hardly perceptible to the human eye; andwhen an image is being printed, ...

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Номер записи: 26
10-01-2019 дата публикации

Image Processing Apparatus and Non-Transitory Computer-Readable Storage Medium Storing Program

Номер: US20190009523A1
Автор: Morikawa Shota
Принадлежит:

An image processing apparatus repeats an ejection process for ejecting color materials by moving a print head in one of a forward direction and a reverse direction in a main scanning direction, and a moving process for moving a print medium in a sub-scanning direction. In a case where an L-th band image satisfies both of a first color condition and a second color condition, a direction of the ejection process is determined to be the same direction as the direction of moving of the print head in the ejection process for another band image including a predetermined number or more of pixels. Where the L-th band image does not satisfy at least one of the first color condition and the second color condition, the direction process of the ejection process is determined to be an opposite direction to moving of the print head in an (L−1)-th ejection process. 1. An image processing apparatus for enabling a printing execution unit to execute image printing , the printing execution unit comprising a print head including a plurality of nozzle groups , the plurality of nozzle groups including a first nozzle group and a second nozzle group , the image processing apparatus comprising a controller configured to perform:acquiring target image data;determining a direction of moving of the print head among a forward direction and a reverse direction in a main scanning direction for band image data included in the target image data; and the ejection process includes a first ejection process and a second ejection process,', 'the first ejection process for ejecting, by moving the print head in the forward direction, a first color material from the first nozzle group onto a first specific position of the print medium followed by a second color material from the second nozzle group,', 'the second ejection process for ejecting, by moving the print head in the reverse direction, the second color material from the second nozzle group onto a second specific position of the print medium followed ...

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Номер записи: 27
03-02-2022 дата публикации

METHOD AND SYSTEM FOR THE DETECTION AND CORRECTION OF PRINTING DEFECTS OF A PRINTING DEVICE

Номер: US20220032609A1
Автор: PALUMBO Vincenzo
Принадлежит: NEOS S.r.l.

Method and respective device for the detection and correction of printing defects of a digital printing device (A) comprising the following steps: —arranging a digital printing device (A) equipped with one or more print heads (H) with a plurality of dispensing nozzles (N); —continuously controlling said plurality of dispensing nozzles (N) to realize a real printing pattern (RPP) on a printing medium (P); —continuously acquiring the real printing pattern (RPP); —detecting at least one printing defect (DF); —elaborating, onboard a control unit of the digital printing device (A), at least one compensation scheme to mask a detected printing defect (DF,); —applying said compensation device during the realization of said real printing pattern (RPP). 1. A method for the detection and correction of printing defects of a digital printing device comprising the following steps:arranging a digital printing device equipped with one or more print heads with a plurality of dispensing nozzles placed along a printing area;arranging an optical detection system, placed next to said printing area with reference to a printing direction;controlling said plurality of dispensing nozzles for dispensing ink onto a printing medium, relatively movable with respect to said printing area, said dispensing being performed based on a predefined ideal printing pattern comprising one or more levels of grey, said dispensing realizing a real printing pattern on said printing medium;acquiring the real printing pattern through said optical detection system;detecting at least one printing defect defined by a difference of said real printing pattern acquired by the optical detection system with respect to said ideal printing pattern,elaborating, on board a control unit of the digital printing device, at least one compensation scheme to mask a detected printing defect;applying said compensation scheme during the realization of said real printing pattern,after realizing the real printing pattern with the ...

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Номер записи: 28
14-01-2021 дата публикации

DUPLEX PRINTING METHOD WITH SHRINKAGE COMPENSATION

Номер: US20210014379A1
Автор: HUNNEKENS Henri P.J., VAN BREUGEL Leon C.
Принадлежит: Canon Production Printing Holding B.V.

A duplex printing method includes, determining an amount of shrinkage of a media sheet onto which a front side image has been printed; scaling an image to be printed on a back side of the sheet with a scaling function that depends upon the determined shrinkage; and printing the scaled image on the back side of the sheet. The step of determining includes predicting a shrinkage of a media sheet on the basis of process parameters, and on the basis of a model that is defined by a set of model parameters and that describes a dependence of the shrinkage on the process parameters, the process parameters including at least an amount of marking material to be applied to the front side of the sheet; measuring an actual shrinkage of the sheet; and adjusting the model parameters based on a comparison between the predicted shrinkage and the measured shrinkage to improve a prediction of a shrinkage for a subsequent sheet. 1. A duplex printing method comprising , for each duplex copy to be printed , the steps of:a) determining an amount of shrinkage of a media sheet onto which a front side image has been printed;b) scaling an image to be printed on a back side of the sheet with a scaling function that depends upon an expected shrinkage of the media sheet; andc) printing the scaled image on the back side of the media sheet, a1) predicting an expected shrinkage of the media sheet on the basis of process parameters that characterize the process of printing the front side image, and on the basis of a model that is defined by a set of model parameters and that describes a dependence of the shrinkage on the process parameters, said process parameters including at least an amount of marking material to be applied to the front side of the sheet during printing;', 'a2) measuring an actual shrinkage of the sheet; and', 'a3) adjusting the model parameters based on a comparison between the predicted shrinkage and the actual shrinkage to improve a prediction of an expected shrinkage of a ...

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Номер записи: 29
17-01-2019 дата публикации

Automated Controls for Contoured Surface Inkjet Printing

Номер: US20190016121A1
Автор: Baker Anthony W., Bowers, Homolak David J., III Kenneth P., Ingram Luke C., Smith Zachary R.
Принадлежит: The Boeing Company

A method of developing an automatic control plan for printing on a contoured surface is disclosed. The method includes scanning a contoured surface with a surface scanning device to produce a contoured data set, and creating a multi-dimensional model, with a computing device, of the contoured surface based on the contoured surface data set. Additionally, the method includes inputting a multi-dimensional model of a printing array and an image to be printed onto the contoured surface, into the computing device. The method further includes simulating, on the computing device, a plurality of movements performed by the printing array and a printing by the printing array to apply the image on the contoured surface. Additionally, the method includes, compiling, on the computing device, the automatic control plan which is programmed to execute the plurality of movements of the printing array to apply the image on the contoured surface. 1. A method of developing an automatic control plan for printing on a contoured surface , the method comprising:scanning a contoured surface, with a surface scanning device, to produce a contoured surface data set;creating a multi-dimensional model, with a computing device, of the contoured surface based on the contoured surface data set;inputting, into the computing device, a multi-dimensional model of a printing array configured for printing on the contoured surface;inputting, into the computing device, an image to be printed on the contoured surface and overlaying the image onto the multi-dimensional model of the contoured surface; generating a plurality of movements of the multi-dimensional model of the printing array based on the multi-dimensional model of the contoured surface and the image to be printed on the contoured surface, and', 'confirming the plurality of movements will be executed and the image will be printed on the contoured surface without issue,, 'executing a simulation on the computing device, the simulation ...

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Номер записи: 30
17-01-2019 дата публикации

LIQUID DROPLET EJECTING APPARATUS AND METHOD FOR MAINTENANCE OF LIQUID DROPLET EJECTING APPARATUS

Номер: US20190016122A1
Автор: NAKATA Toshio, SHINBARA Toshihiro, SUZUKI Toshiyuki
Принадлежит:

A liquid droplet ejecting apparatus includes a liquid droplet ejecting head that includes a pressure chamber to which a liquid is supplied from a liquid supply source, a nozzle that communicates with the pressure chamber, and an actuator that vibrates the pressure chamber, and discharges a liquid droplet from the nozzle by driving of the actuator, a cap designed to make a capping state where the cap is in contact with the liquid droplet ejecting head to form a space where the nozzle opens and a non-capping state where the cap is separated from the liquid droplet ejecting head, and a detection unit designed to detect a state in the pressure chamber, in which in the capping state, the detection unit detects the state in the pressure chamber. 1. A liquid droplet ejecting apparatus comprising:a liquid droplet ejecting head that includes a pressure chamber to which a liquid is supplied from a liquid supply source, a nozzle that communicates with the pressure chamber, and an actuator that vibrates the pressure chamber, and discharges a liquid droplet from the nozzle by driving of the actuator;a cap designed to make a capping state where the cap is in contact with the liquid droplet ejecting head to form a space where the nozzle opens and a non-capping state where the cap is separated from the liquid droplet ejecting head; anda detection unit designed to detect a state in the pressure chamber,wherein in the capping state, the detection unit detects the state in the pressure chamber.2. The liquid droplet ejecting apparatus according to claim 1 ,wherein in a case where the detection unit detects that the state in the pressure chamber is not normal, a maintenance of the liquid droplet ejecting head is performed by discharging the liquid from the nozzle.3. The liquid droplet ejecting apparatus according to claim 1 ,wherein the detection unit detects the state in the pressure chamber by detecting a vibration waveform of the pressure chamber, andthe liquid droplet ejecting ...

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Номер записи: 31
17-01-2019 дата публикации

INK-JET PRINTING APPARATUS, INK-JET PRINTING METHOD, AND STORAGE MEDIUM

Номер: US20190016123A1
Автор: Goto Fumitaka, Kajiwara Yuto, Yamaguchi Hiromitsu
Принадлежит:

In a print head, a plurality of ejection ports for ejecting metallic ink, including a solvent and particles for imparting a metallic gloss, are arranged in a predetermined direction. A plurality of printing scans are performed to the same area of the print medium to print an image on the print medium. In the printing scan, the metallic ink being ejected from the print head to a print medium while moving the print head in a scanning direction intersecting the predetermined direction. At least one of the plurality of printing scans is set as a first scan having a higher print ratio than the other printing scans. 1. An ink-jet printing apparatus comprising:a print head in which a plurality of ejection ports for ejecting metallic ink, including a solvent and particles for imparting a metallic gloss, are arranged in a predetermined direction; anda control unit configured to perform a plurality of printing scans to the same area of the print medium to print an image on the print medium, in the printing scan, the metallic ink being ejected from the print head to a print medium while moving the print head in a scanning direction intersecting the predetermined direction,wherein the control unit sets at least one of the plurality of printing scans as a first scan having a higher print ratio than the other printing scans.2. The ink-jet printing apparatus according to claim 1 ,wherein the control unit sets a print ratio of the first scan to be equal to or greater than a print ratio required for the metallic ink dots, which are dispersively formed on the print medium by one printing scan, to cover an entire unit area of the print medium.3. The ink-jet printing apparatus according to claim 1 ,wherein the control unit sets a print ratio of the first scan to be equal to or greater than half a sum of print ratios of the plurality of printing scans.4. The ink-jet printing apparatus according to claim 1 ,wherein the control unit sets any one of the printing scans corresponding to the ...

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Номер записи: 32
16-01-2020 дата публикации

METHOD FOR DETECTING AND COMPENSATING FOR DEFECTIVE PRINT HEADS IN AN INKJET PRINTING MACHINE BY STOCHASTIC PRINT HEAD MONITORING

Номер: US20200016889A1
Автор: FEHLNER ANDREAS, FORCHE JENS, HENN ANDREAS, NEEB STEFFEN, NORRICK NICKLAS RAYMOND
Принадлежит:

A method for detecting and compensating for defective print heads in an inkjet printing machine uses a computer to analyze printing nozzle test charts and/or area coverage elements to obtain characteristic values of individual printing nozzles in a print head, to calculate the failure probabilities of these printing nozzles on the basis of thresholds, and to compensate for a printing nozzle that exceeds a specified failure probability. The computer uses the individual failure probabilities of the individual printing nozzles in a print head to calculate the failure probability of the print head and initiates compensation measures as a function of the calculation. The thresholds correspond to a multi-dimensional characteristic value threshold based on which the computer calculates the failure probability of a printing nozzle by using an algorithm including kernel density estimation through a multidimensional distribution function. 1. A method for detecting and compensating for defective print heads in an inkjet printing machine , the method comprising the following steps:using a computer to analyze at least one of printing nozzle test charts or area coverage elements to obtain characteristic values for individual printing nozzles in a print head;using the computer to calculate failure probabilities of the printing nozzles on a basis of thresholds;using the computer to compensate for a printing nozzle exceeding a specified failure probability;using the computer to utilize the individual failure probabilities of the individual printing nozzles in a print head to calculate the failure probability of the print head and initiate compensation measures as a function of the calculation; andusing the computer to calculate the failure probability of a printing nozzle by using an algorithm including kernel density estimation through a multi-dimensional distribution function based on the thresholds corresponding to a multi-dimensional characteristic value threshold.2. The method ...

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Номер записи: 33
03-02-2022 дата публикации

HYBRID SWITCHING APPARATUS OF THE WITHDRAWABLE TYPE

Номер: US20220037097A1
Автор: Bolognini Pierangelo, Omati Luca, Raciti Luca
Принадлежит:

A switching apparatus for electric power distribution grids including: a withdrawable first switching unit having one or more first electric poles; a withdrawable second switching unit having one or more second electric poles and electrically connected ins series with said first switching unit; and a controller implementing control strategies directed to increase the safety of the withdrawal manoeuvres of said first and second switching units. 1. A switching apparatus for electric power distribution grids comprising:one or more first and second line terminals electrically connectable to corresponding first and second line conductors of an electric line, respectively;a first switching unit having one or more first electric poles, each first electric pole comprising a first pole contact electrically connectable to a corresponding first line terminal, a second pole contact and one or more solid-state switches electrically connected to said first and second pole contacts and adapted to operate in a conduction state or in an interdiction state to allow or interrupt a current flow,wherein said first switching unit is reversibly switchable between a closed condition, in which said solid-state switches are in a conduction state, and an open condition, in which said solid-state switches are in an interdiction state,wherein said first switching unit is reversibly movable between an insertion condition, in which said first pole contacts are coupled with said first line terminal, and a withdrawal condition, in which said first pole contacts are uncoupled from said first line terminals;a second switching unit having one or more second electric poles, each second electric pole comprising a third pole contact electrically connectable to a corresponding second pole contact of the first switching unit, a fourth pole contact electrically connectable to a corresponding second line terminal and electric contacts electrically connected to said third and fourth pole contacts and adapted ...

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Номер записи: 34
17-04-2014 дата публикации

SUPPLY SYSTEM FOR AN AIRCRAFT, USE OF A SHIELDED SUPPLY LINE IN AN AIRCRAFT AND AN AIRCRAFT WITH A SUPPLY SYSTEM

Номер: US20140104732A1
Автор: Fouquet Nicolas, Schult Jens, STENGEL Torsten
Принадлежит: AIRBUS OPERATIONS GMBH

A supply system for supplying energy in an aircraft includes at least one electrical line including at least one core connectable to a pole of a current source, an electrically conductive shield, and a detection unit having at least two electrical inputs. The shield surrounds the at least one core under a distance and creates an intermediate space between the at least one core and the shield. At least one port of the detection unit is connected to the at least one core. At least another port of the detection unit is connected to at least one of the shield and the at least one core. The detection unit is adapted for detecting a differential current over the at least one core or an absolute current between the shield and a ground potential for generating a warning signal if a predetermined threshold value for the detected current value is exceeded. 1. A supply system for supplying energy in an aircraft , comprising:at least one electrical line connectable to a current source,an electrically conductive shield, anda detection unit having at least first and second electrical inputs,wherein the at least one electrical line comprises at least one core connectable to a pole of the current source,wherein the shield surrounds the at least one core under a distance and creates an intermediate space between the at least one core and the shield,wherein at least one port of the detection unit is connected to the at least one core,wherein said detection unit is adapted for detecting a differential current over the at least one core or an absolute current between two of the shield, the at least one core and a ground potential; andwherein said detection unit is adapted for generating a warning signal if a predetermined threshold value for the detected current value is exceeded.2. The supply system according to claim 1 , wherein the detection unit is coupled with at least one switch in the at least one core for interrupting the current transferred by the at least one core if the ...

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Номер записи: 35
22-01-2015 дата публикации

CIRCUIT BREAKER THERMAL-MAGNETIC TRIP UNITS AND METHODS

Номер: US20150022290A1
Автор: Sandoval Camacho Esteban, Thomas Stephen Scott
Принадлежит: SIEMENS AKTIENGESELLSCHAFT

A trip unit is provided for a circuit breaker that includes electrical contacts, a trip mechanism, a bimetallic strip, and an armature. The trip unit includes a first trip bar coupled to the trip mechanism and disposed about a pivot point, and a second trip bar coupled to the first trip bar and disposed about the pivot point. In a first operating condition, the first trip bar rotates about the pivot point substantially independently of the second trip bar, and activates the trip mechanism to open the electrical contacts. In a second operating condition, the second trip bar rotates about the pivot point, causing the first trip bar to rotate about the pivot point and activate the trip mechanism to open the electrical contacts. Numerous other aspects are provided. 1. A trip unit for a circuit breaker that includes electrical contacts , a trip mechanism , a bimetallic strip , and an armature , the trip unit comprising:a first trip bar coupled to the trip mechanism and disposed about a pivot point; anda second trip bar coupled to the first trip bar and disposed about the pivot point, in a first operating condition, the first trip bar rotates about the pivot point substantially independently of the second trip bar, and activates the trip mechanism to open the electrical contacts;', 'in a second operating condition, the second trip bar rotates about the pivot point, causing the first trip bar to rotate about the pivot point and activate the trip mechanism to open the electrical contacts., 'wherein2. The trip unit of claim 1 , wherein in the first operating condition claim 1 , the bimetallic strip causes the first trip bar to rotate about the pivot point.3. The trip unit of claim 1 , wherein the first operating condition comprises an over-current condition.4. The trip unit of claim 1 , wherein in the first operating condition claim 1 , the second trip bar does not rotate about the pivot point.5. The trip unit of claim 1 , wherein in the second operating condition claim 1 , ...

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Номер записи: 36
28-01-2016 дата публикации

FLUID DROPLET EJECTION DEVICE AND EJECTION INSPECTION METHOD

Номер: US20160023457A1
Автор: HATAO Yosuke
Принадлежит:

A print unit prints by ejecting fluid droplets from a plurality of nozzles while moving in a primary scanning direction relative to a print medium. An ejection inspection unit inspects fluid droplet ejection by a group of target nozzles, which are part of an ejection nozzle subset obtained by dividing the nozzles according to the number of nozzles required to form the smallest printing width in the secondary scanning direction. A control unit controls the print unit and the ejection inspection unit, and selects the group of target nozzles in the ejection nozzle subset and performs the ejection inspection each time a specific amount of printing is completed. 1. An ejection inspection method for a print unit that prints by ejecting fluid droplets from a plurality of nozzles while moving in a primary scanning direction relative to a print medium , comprising , each time a specific amount of printing is completed:selecting a group of target nozzles, which are part of a nozzle subset obtained by dividing the plurality of nozzles according to a number of nozzles required to form a smallest printing width in the secondary scanning direction; andinspecting fluid droplet ejection by the selected group of target nozzles.2. The ejection inspection method described in claim 1 , wherein:the plurality of nozzles are arranged in nozzle lines with the nozzles disposed at substantially uniform intervals in the secondary scanning direction, and the nozzle lines are disposed in nozzle line groups of N lines offset 1/N pitch in the secondary scanning direction;the nozzle line groups are determined by fluid droplet type;{'b': '1', 'the reference position of nozzle lines to N arranged according to the amount of offset of the nozzle line groups is the same position in the secondary scanning direction regardless of the fluid droplet type; and'}the ejection inspection unit selects a nozzle line in the secondary scanning direction of a different line number for each fluid droplet type as the ...

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Номер записи: 37
26-01-2017 дата публикации

METHOD OF TESTING PRINT HEAD, PRINTING METHOD, DEVICE FOR TESTING PRINT HEAD, AND PRINTER

Номер: US20170021612A1
Автор: KYOSO Tadashi, SUMI Katsuto, YAMANOBE Jun
Принадлежит: FUJIFILM Corporation

A plurality of recording elements included in a printed head are grouped into a plurality of groups, a test order is set in units of groups, and a test of the recording elements is periodically performed in units of groups in the set test order. In a case where an abnormality is detected in the recording element as a result of the test, the recording element in which an abnormality is detected is recognized as a retest target, an order of tests is changed through interruption, and a retest of a group including the recording element recognized as a retest target is performed. In a case where an abnormality is detected again in the recording element that is a retest target as a result of the retest, the recording element that is a retest target is recognized as an abnormal recording element. 1. A method of testing a print head comprising a plurality of recording elements , the method comprising:grouping the plurality of recording elements into a plurality of groups, and setting a test order of the plurality of recording elements in units of groups;periodically performing a test of the plurality of recording elements in units of groups in the set test order;recognizing the recording element in which an abnormality is detected, as a retest target, in a case where an abnormality is detected in at least one recording element among the plurality of recording elements in the test;performing a retest of at least the recording element that is a retest target through interruption before a test to be performed in a test order before a change by changing the test order in a case where the recording element that is a retest target is recognized; andrecognizing the recording element that is a retest target as an abnormal recording element in a case where an abnormality is detected again in the recording element that is a retest target as a result of the retest.2. The method of testing a print head according to claim 1 , further comprising:recognizing the recording element that is ...

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Номер записи: 38
25-01-2018 дата публикации

LIQUID DISCHARGE APPARATUS, LIQUID DISCHARGE SYSTEM, AND LIQUID DISCHARGE METHOD

Номер: US20180022088A1
Автор: BANDO Hanako, KUDO Koichi, NAGASU Tsuyoshi
Принадлежит: RICOH COMPANY, LTD.

A liquid discharge apparatus includes a head to discharge liquid onto a conveyed object, at least one light source to irradiate the conveyed object with light having a high relative intensity in a range of wavelength in which a relative reflectance of the liquid is high, and a detector including at least one optical sensor to perform imaging of the conveyed object being irradiated by the at least one light source, to generate data. The detector is configured to generate a detection result based on the data. The detection result including at least one of a conveyance amount of the conveyed object and a conveyance speed of the conveyed object. 1. A liquid discharge apparatus comprising:a head to discharge liquid onto a conveyed object;at least one light source to irradiate the conveyed object with light having a high relative intensity in a range of wavelength in which a relative reflectance of the liquid is high; anda detector including at least one optical sensor configured to perform imaging of the conveyed object being irradiated by the at least one light source, to generate data,the detector configured to generate a detection result based on the data, the detection result including at least one of a conveyance amount of the conveyed object and a conveyance speed of the conveyed object.2. The liquid discharge apparatus according to claim 1 , wherein the detector is configured to generate the detection result with reference to a pattern on the conveyed object.3. The liquid discharge apparatus according to claim 2 , wherein the pattern represents interference of the light reflected on a rugged shape of the conveyed object claim 2 , andthe detector is configured to generate the detection result based on an of the pattern.4. The liquid discharge apparatus according to claim 2 , wherein the at least one optical sensor is configured to perform imaging of the pattern at a plurality of different time points claim 2 , andwherein the detector is configured to detect a ...

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Номер записи: 39
24-01-2019 дата публикации

NOZZLE CONDITION INDICATION

Номер: US20190023004A1
Автор: ANDERSON Daryl E., Fricke Peter James, Gardner James Michael, Martin Eric T.
Принадлежит:

In some examples, a fluid die includes a fluid nozzle, a first latch, a second latch, and a timing circuit comprising a counter and a comparator. The timing circuit is to trigger the first latch, at a first predetermined time instant from an edge of a firing pulse, to store a first test result obtained based on a voltage measured across the fluid nozzle, and trigger the second latch, at a second predetermined time instant from the edge of the firing pulse, to store a second test result obtained based on a voltage measured across the fluid nozzle. 1. A print die comprising:a print nozzle;a first latch;a second latch;a timing circuit comprising a counter and a comparator,the timing circuit to trigger the first latch, at a first predetermined time instant from an edge of a firing pulse, to register a first test result obtained based on a voltage measured across the print nozzle, andthe timing circuit to trigger the second latch, at a second predetermined time instant from the edge of the firing pulse, to register a second test result obtained based on a voltage measured across the print nozzle, the second predetermined time instant different from the first predetermined time instant, and the firing pulse for activating the print nozzle.2. The print die of claim 1 , further comprising:a drive bubble detect module to evaluate a condition of the print nozzle based on the first test result and the second test result.3. The print die of claim 1 , wherein the comparator is to compare a value of the counter to a first time value in a first time repository to determine the first predetermined time instant claim 1 , and the comparator is to compare the value of the counter to a second time value in a second time repository to determine the second predetermined time instant.4. The print die of claim 3 , wherein the timing circuit further comprises a multiplexer to selectively connect the first time repository and the second time repository to the comparator.5. The print die of ...

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Номер записи: 40
25-01-2018 дата публикации

GROUND FAULT DETECTOR

Номер: US20180024179A1
Автор: Aronov Alek, KAMOR Michael, Mathew Renjith, Ostrovsky Michael
Принадлежит: Leviton Manufacturing Company, Inc.

An apparatus includes an interruption circuit in a power delivery path, and a fault detection circuit configured to provide a fault signal to selectively cause the interruption circuit to interrupt power delivery, wherein the fault detection circuit includes a fault detection integrated circuit and a sensing coil configured to sense a differential current between a phase conductive path and a neutral conductive path in the power delivery path. A processor is configured to selectively control a fault simulation circuit to simulate a fault in the power delivery path, detect a response of the fault detection circuit to the simulated fault, and determine if the response of the fault detection circuit is an expected response. The processor provides an override signal to the interruption circuit to prevent the interruption circuit from receiving a fault signal from the fault detection circuit during, and for a predetermined time after, the simulated fault. 1. An apparatus , comprising:an interruption circuit electrically connected in a power delivery path, the power delivery path including a phase conductive path and a neutral conductive path;a fault detection circuit coupled to the interruption circuit and configured to provide a fault signal to selectively cause the interruption circuit to interrupt power delivery in at least one of the phase conductive path and the neutral conductive path, wherein the fault detection circuit includes a sensing coil configured to sense a differential current between the phase conductive path and the neutral conductive path, and further includes a comparator-type fault detection integrated circuit (IC) that compares the differential current to a threshold;a fault simulation circuit; and selectively control the fault simulation circuit to simulate a fault in the power delivery path;', 'detect a response of the fault detection circuit to the simulated fault; and', 'determine if the response of the fault detection circuit is an expected ...

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Номер записи: 41
26-01-2017 дата публикации

GROUND FAULT CIRCUIT INTERRUPTER (GFCI) MONITOR

Номер: US20170025847A1
Автор: Armstrong Bruce
Принадлежит:

This document discusses, among other things, a self-test (ST) ground fault circuit interrupter (GFCI) monitor configured to generate a simulated ground fault starting in a first half-cycle of a first cycle of AC power and extending into a second half-cycle of the first cycle of AC power, wherein the first half-cycle of the first cycle of AC power precedes the second half-cycle of the first cycle of AC power. Further, the ST GFCI monitor can detect a response to the simulated ground fault. 1. (canceled)2. A system; comprising:a self-test (ST) ground fault circuit interrupter (GFCI) monitor configured to generate a simulated ground fault, starting in a first half-cycle of a first cycle of AC power and extending into a second half-cycle of the first cycle of AC power;a GFCI controller configured to detect a ground fault and to provide an enable signal to a semiconductor switch to interrupt AC power to a load in response to the detected ground fault; anda diode configured to prevent interruption of AC power during the second half-cycle of the first cycle of AC power.3. The system of claim 2 , wherein the semiconductor switch includes a silicon-controlled rectifier (SCR) claim 2 , andwherein the ST GFCI monitor is configured to detect if the SCR is enabled in response to the simulated ground fault.4. The system of claim 3 , wherein the ST GFCI monitor is configured to generate an end-of-life (EOL) signal if the SCR is not enabled in response to the simulated ground fault.5. The system of claim 2 , including:load contacts;a solenoid configured to open or close the load contacts, wherein closed load contacts are configured to couple the AC power and the load and open load contacts are configured to decouple the AC power and the load; andthe semiconductor switch, including a silicon-controlled rectifier (SCR) configured to control the solenoid.6. The system of claim 5 , including:wherein the ST GFCI monitor is coupled to the SCR and to the diode,wherein the diode is coupled ...

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Номер записи: 42
23-01-2020 дата публикации

SELF-TEST AUTO MONITOR GROUND FAULT CIRCUIT INTERRUPTER (GFCI) WITH POWER DENIAL

Номер: US20200028347A1
Автор: Batko Thomas James, DeBartolo Joseph Vincent
Принадлежит:

A circuit interrupting device including one or more line terminals for connecting to an external power supply, one or more load terminals for connecting to an external load, one or more contacts electrically connecting one or more line terminals to one or more load terminals; and an auto-monitoring circuit. The auto-monitoring circuit continuously monitoring one or more signals to determine an operating state of said circuit interrupting device. Wherein if said auto-monitoring circuit determines that said circuit interrupting device has reached its end-of-life and it is determined that the contacts have not failed, then a signal is driven to a first level to actuate a switch and open the contacts. Wherein said signal is further driven to a second level to inhibit said circuit interrupting device from resetting when it is determined that contacts of said interrupting device have failed. Wherein the second level has a voltage greater than zero volts. 1. A circuit interrupting device comprising:one or more line terminals for connecting to an external power supply;one or more load terminals for connecting to an external load;one or more contacts electrically connecting one or more line terminals to one or more load terminals; andan auto-monitoring circuit continuously monitoring one or more signals to determine an operating state of said circuit interrupting device, wherein if said auto-monitoring circuit determines that said circuit interrupting device has reached its end-of-life and it is determined that the contacts have not failed, then a signal is driven to a first level to actuate a switch and open the contacts, wherein said signal is further driven to a second level to inhibit said circuit interrupting device from resetting when it is determined that contacts of said interrupting device have failed, wherein the second level has a voltage greater than zero volts.2. The circuit interrupting device claimed in claim 1 , wherein said auto-monitoring circuit determines ...

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Номер записи: 43
01-02-2018 дата публикации

CONTROLLING ADVANCE OF PRINT MEDIA TO DELIVER PRINTING FLUID FROM PLURAL COLUMNS OF NOZZLES

Номер: US20180029355A1
Автор: Müller Andreas, Sarkar Utpal Kumar
Принадлежит:

In some examples, a printing system includes a printhead comprising a nozzle array including plural columns of nozzles to deliver printing fluid to a print medium, wherein nozzles in a first column of the columns are offset from nozzles in a second column of the columns. A controller is to control printing onto the print medium using the printhead by, for each respective pass of a plurality of passes of the printhead over the print medium, controlling an advance of the print medium for a print mask pattern that controls firing of the nozzles of the printhead, where the controlled advance of the print medium causes nozzles from different columns of nozzles of the nozzle array to deliver dots of printing fluid to a given row of a swath in successive passes of the plurality of passes. 1. A printing system comprising:a printhead comprising a nozzle array comprising plural columns of nozzles to deliver printing fluid to a print medium, wherein nozzles in a first column of the columns are offset from nozzles in a second column of the columns; and 'for each respective pass of a plurality of passes of the printhead over the print medium, controlling an advance of the print medium for a print mask pattern that controls firing of the nozzles of the printhead, where the controlled advance of the print medium causes nozzles from different columns of nozzles of the nozzle array to deliver dots of printing fluid to a given row of a swath in successive passes of the plurality of passes.', 'a controller to control printing onto the print medium using the printhead by2. The printing system of claim 1 , wherein the print mask pattern specifies first positions at which no nozzle of the printhead is fired claim 1 , and second positions corresponding to firing opportunities for nozzles of the printhead.3. The printing system of claim 2 , wherein a first subset of the second positions specifies firing opportunities for nozzles of the first column claim 2 , and a second subset of the ...

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Номер записи: 44
01-02-2018 дата публикации

INKJET RECORDING APPARATUS AND CLEANING METHOD

Номер: US20180029356A1
Автор: Furuyama Satoko, Kosaka Kei, Matsui Monta, Tenkawa Tomoyuki
Принадлежит:

An inkjet recording apparatus includes a recording head including a first discharge port configured to discharge a first amount of ink droplets and a second discharge port configured to discharge a second amount of ink droplets smaller than the first amount, a cap, a suction unit, and a determination unit configured to determine whether to perform a first recording operation by using the first and second discharge ports or a second recording operation by only using the first discharge port. If the first recording operation is determined to be performed, the suction unit performs a first suction operation with a first strength and a second suction operation with a second strength higher than the first strength. If the second recording operation is determined to be performed, the suction unit is controlled not to perform the second suction operation and to perform the first suction operation. 1. An inkjet recording apparatus comprising:a recording head configured to perform a recording operation on a recording medium, the recording head including a discharge port surface in which a first discharge port configured to discharge a first amount of ink droplets and a second discharge port configured to discharge a second amount of ink droplets are formed, the second amount being smaller than the first amount;a cap configured to cap the first and second discharge ports;a suction unit connected to the cap and configured to suck in ink from the recording head with the discharge port surface capped with the cap;a determination unit configured to determine which of a plurality of recording operations to be performed by the recording head, the plurality of recording operations including a first recording operation for performing recording on the recording medium by using the first and second discharge ports and a second recording operation for performing recording on the recording medium by using the first discharge port without using the second discharge port; anda control unit ...

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Номер записи: 45
31-01-2019 дата публикации

LIQUID JET HEAD AND LIQUID JET DEVICE

Номер: US20190030883A1
Автор: KAWAMOTO Shunji
Принадлежит:

An object of the invention is to provide a liquid jet head and a liquid jet device each capable of improving the print quality even in the case in which an error occurs in the print data. The liquid jet head includes a receiving section adapted to receive print data, a discriminant section adapted to discriminate whether or not the print data received is non-defective, and a control section adapted to hold the print data in a case in which the print data is non-defective, or perform printing based on the print data held currently without holding the print data received in a case in which the print data received is defective. 1. A liquid jet head comprising:a receiving section adapted to receive print data;a discriminant section adapted to discriminate whether or not the print data received is non-defective; anda control section adapted to hold the print data in a case in which the print data is non-defective, and perform printing based on the print data held currently without holding the print data received in a case in which the print data received is defective.2. The liquid jet head according to claim 1 , whereinthe discriminant section performs an error check on each of a plurality of the print data transmitted between instruction signals adapted to instruct output, andthe control section holds non-defective one of the print data in a case in which any one of the print data is non-defective, and does not hold the print data in a case in which all of the print data are defective.3. The liquid jet head according to claim 2 , whereinin a case in which the control section has received the plurality of the print data between the instruction signals adapted to instruct the output, the control section holds one received at earliest time of the plurality of non-defective print data received.4. The liquid jet head according to claim 1 , whereinthe print data is attached with an error detection code.5. The liquid jet head according to claim 1 , whereinthe discriminant ...

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Номер записи: 46
30-01-2020 дата публикации

HEATER AND INKJET PRINTER

Номер: US20200031114A1
Автор: Higashi Toshikazu, ISHIHARA Yasuhiro, SHIMAZOE Makoto, TATSUMOTO YUHEI
Принадлежит:

A heater includes: a planar heat generator; a power supply circuit that controls supply of power to the planar heat generator; a plurality of temperature sensors that is provided on the planar heat generator and measures a temperature; and a hardware processor that detects abnormality of the temperature sensor in a case where a difference in temperature measured by each of two of the temperature sensors out of the plurality of temperature sensors exceeds an abnormality threshold value after a predetermined waiting time has elapsed since the supply of power to the planar heat generator is stopped. 1. A heater comprising:a planar heat generator;a power supply circuit that controls supply of power to the planar heat generator;a plurality of temperature sensors that is provided on the planar heat generator and measures a temperature; anda hardware processor that detects abnormality of the temperature sensor in a case where a difference in temperature measured by each of two of the temperature sensors out of the plurality of temperature sensors exceeds an abnormality threshold value after a predetermined waiting time has elapsed since the supply of power to the planar heat generator is stopped.2. The heater according to claim 1 , whereinthe hardware processor updates the abnormality threshold value in a case where the difference in temperature measured by each of the two temperature sensors is less than the abnormality threshold value after the waiting time has elapsed since the supply of power to the planar heat generator is stopped,the hardware processor detects, after the hardware processor has updated the abnormality threshold value, abnormality of the temperature sensor in a case where the difference in temperature measured by each of the two temperature sensors out of the plurality of temperature sensors exceeds the abnormality threshold value having been updated after the waiting time has elapsed since the supply of power to the planar heat generator is stopped, ...

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Номер записи: 47
30-01-2020 дата публикации

LIQUID JET DEVICE

Номер: US20200031117A1
Автор: KAIBA Tadashi, MURAI Shuusei
Принадлежит: RICOH COMPANY, LTD.

A liquid jet device includes a head that discharges liquid to an object; a moving mechanism that moves at least one of the object and the head; and a controller that causes the head to discharge the liquid while moving the at least one of the object and the head in a first direction to form a first row of dots, and causes the head to discharge the liquid while moving the at least one of the object and the head in a second direction opposite the first direction to form a second row of dots that overlaps the first row of dots. The controller causes the center of the first dot in the second row of dots to be shifted from the center of the last dot in the first row of dots by a distance greater than or equal to a distance d. 1. A liquid jet device , comprising:a head that discharges liquid to an object;a moving mechanism that moves at least one of the object and the head; and causes the head to discharge the liquid while moving the at least one of the object and the head in a first direction to form a first row of dots, and', 'causes the head to discharge the liquid while moving the at least one of the object and the head in a second direction opposite the first direction to form a second row of dots that overlaps the first row of dots,, 'a controller that'}wherein the controller causes a center of a first dot in the second row of dots to be shifted from a center of a last dot in the first row of dots by a distance greater than or equal to a distance d.2. The liquid jet device as claimed in claim 1 , wherein the controllercauses the head to discharge the liquid at predetermined intervals while moving the at least one of the object and the head in the first direction, andcauses the head to discharge the liquid at the predetermined intervals while moving the at least one of the object and the head in the second direction.3. The liquid jet device as claimed in claim 1 , wherein the controller causes the center of the first dot in the second row of dots to be shifted from ...

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Номер записи: 48
01-02-2018 дата публикации

GROUND FAULT CIRCUIT INTERRUPTER (GFCI) SYSTEM AND METHOD

Номер: US20180033576A1
Автор: Simonin Stephen Paul
Принадлежит:

A wiring device including one or more line contact arms electrically connected to a line terminal. Each line contact arm has an upper line contact located on a bent portion of the line contact arm, and a lower line contact located on a substantially straight portion of the line contact arm. The wiring device further includes one or more load contact arms electrically connected to a load terminal. Each load contact arm has a load contact located on a bent portion of the load contact arm. 1. A wiring device comprising: an upper line contact located on a bent portion of the line contact arm, and', 'a lower line contact located on a substantially straight portion of the line contact arm; and, 'one or more line contact arms electrically connected to a line terminal, each line contact arm having'}one or more load contact arms electrically connected to a load terminal, each load contact arm having a load contact located on a bent portion of the load contact arm.2. The wiring device of claim 1 , wherein claim 1 , a face contact and the upper line contact are electrically connected claim 1 , and the lower line contact and the load contact are electrically connected claim 1 , when the wiring device in is a closed position claim 1 , and the face contact and the upper line contact are electrically disconnected claim 1 , and the lower line contact and the load contact are electrically disconnected when the wiring device is in an open position.3. The wiring device of claim 1 , wherein the face contact and the upper line contact are in a substantially flat connection when the wiring device is in the closed position.4. The wiring device of claim 1 , wherein the lower line contact and the load contact are in a substantially flat connection when the wiring device is in the closed position.5. The wiring device of claim 1 , wherein the bent portion of the line contact arm is bent at an angle of approximately three degrees to approximately six degrees relative to the substantially ...

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Номер записи: 49
01-02-2018 дата публикации

DELAY CIRCUIT FOR CIRCUIT INTERRUPTING DEVICE

Номер: US20180034262A1
Автор: Simonin Stephen Paul
Принадлежит:

A delay circuit configured to delay the disconnection of one or more line conductors from one or more load conductors, wherein the one or more line conductors are disconnected from the one or more load conductors in a tripped condition. The delay circuit includes a first switch, a second switch, and a third switch. The first switch is configured to receive a fault detection signal and trigger in response to receiving the fault detection signal. Wherein the triggering of the second switch and the third switch is delayed for an amount of time, and after the amount of time has elapsed, the second switch and the third switch are activated to place the one or more line conductors and the one or more load conductors in the tripped condition. 1. A delay circuit configured to delay the disconnection of one or more line conductors from one or more load conductors , wherein the one or more line conductors are disconnected from the one or more load conductors in a tripped condition , the delay circuit comprising:a first switch configured to receive a fault detection signal and trigger in response to receiving the fault detection signal;a second switch; anda third switch;wherein the triggering of the second switch and the third switch is delayed for an amount of time, and after the amount of time has elapsed, the second switch and the third switch are activated to place the one or more line conductors and the one or more load conductors in the tripped condition.2. The delay circuit of claim 1 , further comprising a resistor claim 1 , a first capacitor claim 1 , a second capacitor claim 1 , and a solid-state relay.3. The delay circuit of claim 2 , wherein the fault detection signal is provided to the first switch to trigger the first switch into a conductive state claim 2 , the first switch triggers the solid-state relay into a conductive state and electrically connects the resistor to the first capacitor and the second capacitor claim 2 , the resistor claim 2 , the first ...

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Номер записи: 50
09-02-2017 дата публикации

MITIGATING DAMAGE TO DROP GENERATORS IN A PRINTING SYSTEM

Номер: US20170036441A1
Автор: Holstun Clayton L, Mann Joshua A, Underwood Lisa A
Принадлежит: Hewlett-Packard Development Company, L.P.

According to an example, in a method for mitigating damage to a plurality of drop generators in a printing system, data corresponding to an image to be printed on a media by the printing system may be accessed. In addition, the plurality of drop generators may be controlled to print the image on the media while mitigating damage to the plurality of drop generators and without shifting placement of the image on the media or shifting the plurality of drop generators in a direction perpendicular to a feed direction of the media. 1. A method for mitigating damage to a plurality of drop generators in a printing system , said method comprising:accessing data corresponding to an image to be printed on a media by the printing system; andcontrolling the plurality of drop generators to print the image on the media while mitigating damage to the plurality of drop generators and without shifting placement of the image on the media or shifting the plurality of drop generators in a direction perpendicular to a feed direction of the media.2. The method according to claim 1 , further comprising:determining a characteristic type of the image to be printed; andwherein controlling the plurality of drop generators while mitigating damage to the plurality of drop generators further comprises controlling the plurality of drop generators to print the image exclusively with a first subset of the plurality of drop generators in response to the image to be printed having a first characteristic type and printing the image exclusively with a second subset of the plurality of drop generators in response to the image to be printed having a second characteristic type.3. The method according to claim 2 , wherein the second subset of the plurality of drop generators includes a non-overlapping set of drop generators as compared with the first subset of the plurality of drop generators.4. The method according to claim 1 , wherein the plurality of drop generators are arranged along two columns along a ...

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Номер записи: 51
09-02-2017 дата публикации

IMAGE FORMING APPARATUS, IMAGE FORMING METHOD AND COMPUTER READABLE MEDIUM

Номер: US20170036442A1
Автор: SASAKI Hirotake, Seto Shinji
Принадлежит:

An image forming apparatus includes: a feeding unit that feeds a recording medium; an ejection unit that ejects droplets onto the recording medium fed by the feeding unit; a derivation unit that derives a fluctuation amount range of droplet speed of each droplet commencing with a second droplet relative to droplet speed of a first droplet as a range satisfying set image quality when continuous ejection of droplets are performed by the ejection unit so that the droplets are ejected continuously in different positions on the recording medium in a feeding direction of the recording medium within a range higher than an upper limit value of predetermined image formation speed but lower than limit image formation speed; and a control unit that performs control on the feeding unit and the ejection unit so as to form an image on the recording medium at image formation speed as defined herein. 1. An image forming apparatus comprising:a feeding unit that feeds a recording medium;an ejection unit that ejects droplets onto the recording medium fed by the feeding unit;a derivation unit, that derives a fluctuation amount range of droplet speed of each droplet commencing with a second droplet relative to droplet speed of a first droplet as a range satisfying set image quality when continuous ejection of droplets are performed by the ejection unit so that the droplets are ejected continuously in different positions on the recording medium in a feeding direction of the recording medium within a range higher than an upper limit value of predetermined image formation speed but lower than limit image formation speed; anda control unit that performs control on the feeding unit and the ejection unit so as to form an image on the recording medium at image formation speed within a range determined in accordance with the range derived by the derivation unit.2. The image forming apparatus according to claim 1 , wherein the image quality is set in accordance with a permissible level of a ...

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Номер записи: 52
08-02-2018 дата публикации

DROPLET DISCHARGE APPARATUS, CONTROL DEVICE, AND CONTROL METHOD

Номер: US20180037022A1
Автор: ASAMOTO Katsuya, SASAKI Tsuneyuki
Принадлежит:

A printing apparatus (droplet discharge apparatus) includes a discharge portion that has a nozzle discharging ink to a medium and a control device that allows the discharge portion to discharge the ink depending on execution of a print job defining a mode for discharging the ink to the medium. Before the print job is executed, the control device calculates a discharge amount fluctuation which is a fluctuation in a discharge amount of liquid per unit time by the discharge portion based on the print job and determines whether or not maintenance for recovering ink discharge performance of the discharge portion is required at the time of executing the print job based on the discharge amount fluctuation. 1. A droplet discharge apparatus , comprising:a discharge portion that has a nozzle discharging droplets to a medium; anda control device that allows the discharge portion to discharge the droplets depending on an execution of a droplet discharge job defining a mode for discharging the droplets to the medium,wherein before the droplet discharge job is executed, the control device calculates a discharge amount fluctuation, which is a fluctuation in a discharge amount of liquid per unit time by the discharge portion, based on the droplet discharge job, and determines whether or not maintenance for recovering droplet discharge performance of the discharge portion is required at the time of executing the droplet discharge job based on the discharge amount fluctuation.2. The droplet discharge apparatus according to claim 1 , wherein when humidity in the vicinity of the nozzle is nozzle ambient humidity and the nozzle ambient humidity is used as a reference humidity serving as a threshold value that indicates whether drying of the nozzle is progressed claim 1 ,before the droplet discharge job is executed, the control device calculates a humidity fluctuation which is a fluctuation in the nozzle ambient humidity per unit time based on the discharge amount fluctuation, and ...

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Номер записи: 53
30-01-2020 дата публикации

VOLTAGE PROTECTIVE DEVICE

Номер: US20200035436A1
Автор: Packard Thomas N.
Принадлежит: PASS & SEYMOUR, INC.

A protective device for use in an electrical voltage distribution system providing voltage from a power source to a load, the device including: a housing having a user accessible surface; a plurality of line terminals configured to electrically connect to the power source and a plurality of load terminals configured to electrically connect to the load; a circuit interrupter including a solenoid and a set of interrupting contacts that connect at least one line terminal and at least one load terminal in a reset state and disconnect the at least one line terminal and the at least one load terminal in a tripped state, the solenoid driving the interrupting contacts from the reset state to the tripped state when activated by a switching device; a voltage detection element configured to detect voltage across the plurality of line terminals and generate a line voltage rejection signal when greater than a predetermined overvoltage; a reset assembly including a reset button available via the user accessible surface and a reset switch operatively coupled to the reset button, the reset switch when operated causing a reset signal to be generated when the line voltage rejection signal is absent but not when the line voltage rejection signal is present; and a reset prevention mechanism configured to prevent the circuit interrupter from entering the reset state when the reset signal is absent. 1. A protective device for use in an electrical voltage distribution system providing voltage from a power source to a load , the device comprising:A housing having a user accessible surface;A plurality of line terminals configured to electrically connect to the power source and a plurality of load terminals configured to electrically connect to the load;A circuit interrupter including a solenoid and a set of interrupting contacts that connect at least one line terminal and at least one load terminal in a reset state and disconnect the at least one line terminal and the at least one load ...

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Номер записи: 54
30-01-2020 дата публикации

SYSTEM AND METHOD FOR DISCERNING ARCING IN ELECTRICAL WIRING

Номер: US20200036183A1
Автор: III William Vernon, MILLER
Принадлежит:

A wiring device including an interrupting device, a fault detection device, and a controller. The interrupting device is configured to place the wiring device in a tripped condition in which the flow of power between one or more line terminals and one or more load terminals is interrupted. The fault detection circuit is configured to detect a fault condition and generate a fault detection signal in response to detecting the fault condition, the fault detection signal being provided to the interrupting device to place the interrupting device in the tripped condition. The controller is configured to monitor a current of the one or more line terminals, identify a presence of an in-rush condition or a steady-state condition, and prevent the output of the fault detection signal upon identifying either the in-rush condition or the steady-state condition. 1. A wiring device comprising:an interrupting device electrically connecting one or more line terminals to one or more load terminals when the interrupting device is in a reset condition and disconnecting the line terminals from the load terminals when the interrupting device is in a tripped condition;a fault detection circuit configured to detect a fault condition and generate a fault detection signal in response to detecting the fault condition, the fault detection signal being provided to the interrupting device to place the interrupting device in the tripped condition; and monitor a current of the one or more line terminals,', 'identify a presence of at least one selected from a group consisting of an in-rush condition and a steady-state condition, and', 'prevent the output of the fault detection signal upon identifying at least one selected from the group consisting of the in-rush condition and the steady-state condition., 'a controller having an electronic processor and a memory, the controller configured to'}2. The wiring device of claim 1 , wherein at least one selected from the group consisting of the in-rush ...

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Номер записи: 55
04-02-2021 дата публикации

DEVICE FOR DOOR AND PHASE SEGREGATION IN MOLDED CASE CIRCUIT BREAKERS

Номер: US20210035762A1
Автор: Ferrari Michele, Taiocchi Oscar
Принадлежит:

A device for door and phase segregation in low voltage circuit breakers, in particular in molded case circuit breakers, having a plurality of phases each provided with a lug for electrical connection of said circuit breaker and a venting aperture for venting off gases, the device comprising a conductive element adapted to be fixed to a corresponding lug of the circuit breaker and provided with electrical connection means for electrical connection of the circuit breaker, comprising a first insulating element covering the conductive element and/or a second insulating element adapted to be interposed between two adjacent phases of the circuit breaker. 1. A device for door and phase segregation in low voltage circuit breakers , in particular in molded case circuit breakers , having a plurality of phases each provided with a lug for electrical connection of said circuit breaker and a venting aperture for venting off gases , said device comprising a conductive element adapted to be fixed to a corresponding lug of said circuit breaker and provided with electrical connection means for electrical connection of said circuit breaker , and a first insulating element covering said conductive element and/or a second insulating element adapted to be interposed between two adjacent phases of said circuit breaker.2. The device for door and phase segregation in low voltage circuit breakers according to claim 1 , wherein said conductive element is substantially L-shaped and said first insulating element comprises a first insulating body substantially L-shaped fitted onto said conductive element and having a first and a second lateral surface substantially continuous and substantially L-shaped claim 1 , and a top surface provided with an opening for accessing the connection means of said conductive element.3. The device for door and phase segregation in low voltage circuit breakers according to claim 2 , wherein said first insulating body has a rear and a bottom surface provided with ...

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Номер записи: 56
04-02-2021 дата публикации

Earth leakage circuit breaker

Номер: US20210035764A1
Автор: Hyunyoung Jung, Jaeshik YOON, Jaeyoung Yu
Принадлежит: LS Electric Co Ltd

The earth leakage circuit breaker of the present disclosure includes a leakage current detection unit outputting a leakage current detection signal; a conversion unit outputting the leakage current magnitude of a fundamental wave component, a ratio of a third harmonic component, and a ratio of a positive pole peak current value to a negative pole peak current value; and a control unit comparing the leakage current magnitude of a fundamental wave component, the ratio of a third harmonic component, and the ratio of a positive pole peak current value to a negative pole peak current value with predetermined reference values to determine whether a leakage current of the alternating current component is generated or a leakage current of the direct current component is generated and to thereby output a trip control signal when it is determined that the leakage current of the direct current or alternating current component is generated.

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Номер записи: 57
12-02-2015 дата публикации

INKJET RECORDING METHOD AND RECORDING APPARATUS

Номер: US20150042711A1
Автор: Ohnishi Masaru
Принадлежит:

The present invention addresses the problem of improving the quality of recorded images in ink jet recording technologies in which a plurality of nozzle lines that discharge ink of the same color are used. As a solution, nozzle lines () of n columns (where n is a natural number of three or more) each record a recording pixel column () on a recording medium by discharging ink of the same color while scanning over the recording medium (); and when the nozzle lines () of n columns each extract a recording pixel column (), which is recorded in a single scan, for each n columns in the scanning direction, ink is discharged in such a manner that there are at least two permutation patterns for the nozzle columns () that record each column of the extracted recording pixel columns (). 1. An inkjet recording method , comprising:a scanning process in which nozzle arrays of “n” rows for ejecting ink of same color are scanned on a recording medium along a scanning direction and the nozzle arrays respectively eject ink on the recording medium to respectively record recording pixel rows on the recording medium, wherein “n” is a natural number of 3 or more;wherein each of the nozzle arrays is comprised of one nozzle or more nozzles aligned along a sub-scanning direction perpendicular to the scanning direction, and the nozzles of the respective nozzle arrays are aligned along the scanning direction; andwherein, in the scanning process, the respective nozzle arrays of the “n” rows eject ink so that, when the recording pixel rows recorded by one scanning are extracted every “n” rows along the scanning direction, number of permutation patterns of the nozzle arrays for recording respective rows of extracted recording pixel rows is two or more.2. The inkjet recording method according to claim 1 , whereinthe nozzle arrays of the “n” rows are selected from “m” rows of the nozzle arrays provided in a recording head, wherein “m” is a natural number of “n+1” or more, andthe scanning process ...

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Номер записи: 58
12-02-2015 дата публикации

RECORDING APPARATUS AND PATTERN FORMING METHOD

Номер: US20150042713A1
Автор: Kanda Hidehiko, Yoshikawa Hirokazu
Принадлежит:

A recording apparatus to record an image to a recording medium includes a recording head having nozzles arranged in a predetermined direction in a nozzle array, scanning, recording control, obtaining, determining, and adjusting units. The scanning unit scans the recording head to the recording medium in a crossing direction. The recording control unit causes the recording head to record an adjusting pattern and a detecting pattern by discharging ink from a nozzle group. The obtaining unit obtains an information regarding number of defective discharge nozzles in the nozzle group based on the detecting pattern. The determining unit determines an adjusting value based on the recorded adjusting pattern where the indicated number is smaller than a threshold value, and not based on the adjusting pattern where the indicated number is larger than the threshold value. The adjusting unit adjusts the recording head recording position based on the determined adjusting value. 1. A recording apparatus to record an image to a recording medium , the recording apparatus comprising:a recording head having a nozzle array in which a plurality of nozzles for discharging ink is arranged in a predetermined direction;a scanning unit configured to scan the recording head to the recording medium relatively in a crossing direction which crosses the predetermined direction;a recording control unit configured to cause the recording head to record an adjusting pattern for adjusting a recording position of the recording head to the recording medium and a detecting pattern for detecting nozzle of defective discharge on a recording medium by discharging ink from a nozzle group which is formed by a part of the plurality of nozzles in the nozzle array;an obtaining unit configured to obtain an information regarding number of nozzles of defective discharge in the nozzle group based on the detecting pattern;a determining unit configured to determine an adjusting value (i) based on the adjusting pattern ...

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Номер записи: 59
06-02-2020 дата публикации

LIQUID DISCHARGE APPARATUS AND LIQUID DISCHARGE METHOD

Номер: US20200039211A1
Автор: SATOH Nobuyuki, YAMAGUCHI Kohhei, Yokozawa Suguru
Принадлежит: RICOH COMPANY, LTD.

A liquid discharge apparatus includes a liquid discharge head, a scanning device, a conveyance device, a reading device, control circuitry, and a detecting device. The liquid discharge head is configured to discharge liquid to a target object. The scanning device is configured to move the liquid discharge head in a main scanning direction. The conveyance device is configured to convey the target object in a direction perpendicular to the main scanning direction. The reading device is disposed at a predetermined position with respect to the liquid discharge head. The control circuitry is configured to change a detection pattern image for detecting a defective nozzle, in accordance with a feed amount of the target object in the sub-scanning direction. The detecting device is configured to identify a nozzle corresponding to a defective portion of the detection pattern image read by the reading device. 1. A liquid discharge apparatus comprising:a liquid discharge head configured to discharge liquid to a target object;a scanning device configured to move the liquid discharge head in a main scanning direction;a conveyance device configured to convey the target object in a direction perpendicular to the main scanning direction;a reading device disposed at a predetermined position with respect to the liquid discharge head;control circuitry configured to change a detection pattern image for detecting a defective nozzle, in accordance with a feed amount of the target object in the sub-scanning direction; anda detecting device configured to identify a nozzle corresponding to a defective portion of the detection pattern image read by the reading device.2. The liquid discharge apparatus according to claim 1 ,wherein the control circuitry is configured to change the detection pattern image in accordance with a number of times of feeds of the target object for applying the liquid in a width of the liquid discharge head in the sub scanning direction.3. The liquid discharge ...

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Номер записи: 60
15-02-2018 дата публикации

IMAGE PROCESSING APPARATUS AND IMAGE PROCESSING METHOD

Номер: US20180043682A1
Автор: Kitai Satoshi, Murayama Yoshiaki, Umezawa Masahiko
Принадлежит:

A pixel row in an arrangement direction or an orthogonal direction is divided into processing groups including pixels at every predetermined pixel count in the pixel row. Nondischarge complementary processing is sequentially performed on the divided plurality of processing groups. 1. An image processing apparatus configured to generate recording data used to discharge ink , by using a recording head including a nozzle array in which a plurality of nozzles configured to discharge the ink is arranged in a predetermined direction , from the recording head to a predetermined area of a recording medium while moving at least either the recording head or the recording medium in a crossing direction crossing the predetermined direction , the image processing apparatus comprising:a generation unit configured to generate uncomplemented data determining whether to discharge the ink from the nozzle array to each of a plurality of pixel areas on the recording medium;an obtaining unit configured to obtain information indicating a defective discharge nozzle among the plurality of nozzles; anda complementary unit configured to, if the uncomplemented data determines that the ink is discharged from a target defective discharge nozzle in the nozzle array to a target pixel area on the recording medium, complement a defective discharge of the target defective discharge nozzle by discharging the ink to any one of pixel areas ranging from one adjoining the target pixel area on the recording medium in the predetermined direction to one N pixel areas apart in the predetermined direction,wherein the complementary unit is configured to divide the plurality of pixel areas into N processing groups including pixel areas N pixel areas apart in the predetermined direction, and complement a defective discharge of a defective discharge nozzle in a sequential manner from one processing group to another.2. The image processing apparatus according to claim 1 , wherein the generation unit is configured ...

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Номер записи: 61
18-02-2021 дата публикации

SMART ELECTRONIC SWITCH

Номер: US20210050850A1
Автор: Djelassi-Tscheck Christian, Lillo Ulisse Lorenzo, Luschin Michael
Принадлежит:

An integrated circuit that may be employed as a smart switch is described herein. The integrated circuit may include a first power transistor coupled between a supply pin and a first output pin and a second power transistor coupled between the supply pin and a second output pin. The first and the second power transistors each having an intrinsic body diode which allows reverse conduction. The integrated circuit further includes a control circuit that is configured to trigger a switch-on and switch-off of the first and the second power transistors based on a first input signal and a second input signal, respectively. Furthermore, the integrated circuit includes a protection circuit configured to detect, for the first and the second power transistors, a transition from a reverse conducting state into a forward conducting state, and vice versa, and to generate an error signal in response to certain detections. 1. An integrated circuit comprising:a first power transistor coupled between a supply pin and a first output pin,a second power transistor coupled between the supply pin and a second output pin, the first and the second power transistors each having an intrinsic body diode which allows reverse conduction;a control circuit configured to trigger a switch-on and switch-off of the first and the second power transistors based on a first input signal and a second input signal, respectively; anda protection circuit configured to detect, for the first and the second power transistors, a transition from a reverse conducting state into a forward conducting state, and vice versa, and to generate an error signal when detecting a transition from a reverse conducting state into a forward conducting state for the second power transistor and a transition from a forward conducting state into a reverse conducting state for the first power transistor.2. The integrated circuit of claim 1 ,wherein the protection circuit is configured to generate the error signal when detecting the ...

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Номер записи: 62
03-03-2022 дата публикации

INKJET RECORDING APPARATUS

Номер: US20220063281A1
Автор: KIDERA Hiroshige, TOYOSHI Naoki
Принадлежит:

An inkjet recording apparatus includes an inkjet head that ejects ink from a nozzle and records an image; a wiping and cleaning mechanism that wipes a nozzle surface with a cleaning member, the inkjet head has the nozzle surface at which an ejection port of the nozzle of is formed; and a hardware processor that controls operation including the recording operation. the hardware processor performs dry maintenance control in which dry wiping using the wiping and cleaning mechanism is controlled, and wet maintenance control in which wet wiping using the wiping and cleaning mechanism and including wetting at least a part of a wiping surface of the cleaning member is controlled. 1. An inkjet recording apparatus comprising:an inkjet head that ejects ink from a nozzle and records an image;a wiping and cleaning mechanism that wipes a nozzle surface with a cleaning member, the inkjet head has the nozzle surface at which an ejection port of the nozzle of is formed; anda hardware processor that controls operation including the recording operation; whereinthe hardware processor performs dry maintenance control in which dry wiping using the wiping and cleaning mechanism is controlled, and wet maintenance control in which wet wiping using the wiping and cleaning mechanism and including wetting at least a part of a wiping surface of the cleaning member is controlled.2. The inkjet recording apparatus according to claim 1 , wherein claim 1 ,in the wet maintenance control, the hardware processor instructs a user to wet at least a part of the wiping surface of the cleaning member, and, upon at least a part of the wiping surface being wet, wipes the nozzle surface with the cleaning member in a wet condition.3. The inkjet recording apparatus according to claim 1 , wherein claim 1 ,in the wet maintenance control, the hardware processor instructs a liquid supplier to wet at least a part of the wiping surface of the cleaning member, and, upon at least a part of the wiping surface being wet, ...

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Номер записи: 63
03-03-2022 дата публикации

LIQUID EJECTING APPARATUS AND MAINTENANCE METHOD OF LIQUID EJECTING APPARATUS

Номер: US20220063282A1
Автор: NAKAMURA Chikashi
Принадлежит:

A liquid ejecting apparatus includes a liquid ejecting portion that has a common liquid chamber into which liquid flows, a plurality of individual liquid chambers communicating with the common liquid chamber, a nozzle communicating with the individual liquid chamber, a nozzle surface on which a plurality of the nozzles are open, and a discharge element, and that is configured to discharge the liquid from the nozzle toward a medium by driving the discharge element, estimates whether or not the liquid is can be discharged from the nozzle after performing a pressurization discharge operation of discharging the liquid from the nozzle by pressurizing the liquid in the common liquid chamber, and performs a flushing operation of discharging the liquid from the nozzle by driving the discharge element corresponding to the nozzle estimated to be able to discharge the liquid.

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Номер записи: 64
14-02-2019 дата публикации

METHOD AND CONTROLLER TO PREVENT INK LEAKAGE FROM A PRINT HEAD

Номер: US20190047282A1
Автор: Lela Admir, Luecke Kay
Принадлежит: Océ Holding B.V.

The negative pressure in the ink chamber of a nozzle of a print head is reduced in a printing interruption phase, in particular upon transport of the print head from a cleaning position into a printing position, relative to the negative pressure in a printing phase. The leaking of ink during the printing interruption phase may thus be reliably avoided, and the print quality may be increased. 1. A method for preventing the leaking of ink from a print head of an inkjet printing device , the print head including at least one nozzle , the method comprising:determining presence of a printing interruption phase of the print head or that a previous print preparation phase has been performed; andreducing, based on the determination, a physical rest pressure of the ink in the nozzle to a printing interruption level that is lower than a printing operation level used as a rest pressure during a printing phase of the print head.2. The method according to claim 1 , wherein the rest pressure corresponds to a physical pressure in an ink chamber of the nozzle that is present when an actuator of the nozzle is located in a rest state or is not activated.3. The method according to claim 1 , wherein the printing interruption level is such that substantially no air is drawn via the nozzle into an ink chamber and/or an ink channel of said nozzle.4. The method according to claim 1 , wherein:the print head is moved from a printing position into a cleaning position for a cleaning; andthe printing interruption phase corresponds to a transport phase during which the print head is moved from the cleaning position back to the printing position.5. The method according to claim 1 , wherein the printing interruption phase corresponds to a printing pause between two printing phases in which the print head remains at a printing position above a recording medium.6. The method according to claim 1 , further comprising:determining state information with regard to a state of a nozzle plate of the print ...

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Номер записи: 65
13-02-2020 дата публикации

LIQUID EJECTING DEVICE AND LIQUID EJECTING METHOD

Номер: US20200047489A1
Автор: Furuya Chika, HIOKI Wataru
Принадлежит: MIMAKI ENGINEERING CO., LTD.

A printing apparatus operating as a liquid ejecting device is provided and includes: an inkjet head including a plurality of nozzles, a scanning driver that causes the inkjet head to perform a main scan, and a controller. When an abnormal nozzle is present, the controller causes another nozzle in the vicinity of the abnormal nozzle to eject the liquid of a larger amount than that in a normal time to a part of an ejecting position where the liquid can be ejected by the other nozzle based on a mask prepared in advance, so that an amount of liquid to be ejected at the time of the main scanning direction by the other nozzle becomes larger than that in the normal time. The mask is data specifying the ejecting position to increase an ejection amount of the liquid and an ejection amount to be increased at the ejecting position. 1. A liquid ejecting device that ejects a liquid through an inkjet method , and the liquid ejecting device comprising:an inkjet head including a plurality of nozzles arranged with positions shifted from each other in a nozzle row direction that is predetermined;a scanning driver that causes the inkjet head to perform a main scan of ejecting the liquid while relatively moving in a main scanning direction intersecting the nozzle row direction with respect to an liquid ejecting target; anda controller that controls operation of the inkjet head and the scanning driver,wherein when an abnormal nozzle which is a nozzle having an abnormal ejection characteristic is present, the controller causes another nozzle in a vicinity of the abnormal nozzle to eject the liquid of a larger amount than that in a normal time when the abnormal nozzle is not present to a part of an ejecting position where the liquid is ejectable by the other nozzle in the main scan based on a mask prepared in advance, so that an amount of the liquid to be ejected at a time of the main scan by the other nozzle becomes larger than that in the normal time, andthe mask being data specifying ...

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Номер записи: 66
13-02-2020 дата публикации

INKJET RECORDING APPARATUS AND IMAGE FORMING METHOD

Номер: US20200047490A1
Автор: FUKATA Takuya
Принадлежит: KYOCERA Document Solutions Inc.

An inkjet recording apparatus includes an image forming section and a controller. The image forming section includes a plurality of nozzles, and injects ink from the plurality of nozzles to form an image on a recording medium. The controller controls the image forming section. The controller includes a determining section, a changing section, and a generating section. The determining section determines whether or not each of the plurality of nozzles is clogged with the ink in a thickened state. The changing section changes the nozzle to inject the ink, from a first nozzle to a second nozzle, based on a determination result of the determining section. The generating section generates image data based on the determination result of the determining section. The controller controls the image forming section to inject the ink from the second nozzle to form an image on the recording medium based on the image data. 1. An inkjet recording apparatus comprising:an image forming section including a plurality of nozzles, the image forming section being configured to inject ink from the plurality of nozzles to form an image on a recording medium; anda controller configured to control the image forming section, wherein a determining section configured to determine whether or not each of the plurality of nozzles is clogged with the ink in a thickened state,', 'a changing section configured to change the nozzle to inject the ink, from a first nozzle to a second nozzle, based on a determination result of the determining section, and', 'a generating section configured to generate image data based on the determination result of the determining section,, 'the controller includes'}the controller controls the image forming section to inject the ink from the second nozzle to form an image on the recording medium based on the image data,the first nozzle is clogged with the ink in the thickened state, andthe second nozzle is different from the first nozzle.2. The inkjet recording apparatus ...

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Номер записи: 67
13-02-2020 дата публикации

PRINTING APPARATUS AND INSPECTION METHOD THEREFOR

Номер: US20200047492A1
Автор: Kitai Satoshi, Murase Takeshi, Murayama Yoshiaki, Serizawa Kouichi, Umezawa Masahiko
Принадлежит:

A printing apparatus prints by discharging ink to a transfer member from a first printhead, discharging a transfer accelerator to the ink from a second printhead, and transferring an image formed on the transfer member to a print medium. When inspecting a discharge state of each of plural nozzles provided in each of the first and second printheads, the apparatus controls the second printhead so as to discharge the transfer accelerator from at least one nozzle of the second printhead to a discharge area of the transfer member to which the ink is discharged by the first printhead for inspection of the discharge states of the plural nozzles of the first printhead, while inspecting a discharge state of a nozzle different from the at least one nozzle of the second printhead by discharging the transfer accelerator from the nozzle. 1. A printing apparatus for executing printing by transferring an image formed on a rotating transfer member to a print medium , comprising:a first printhead configured to form an image by discharging ink, to the transfer member, from each nozzle of a plurality of nozzle arrays each of which is formed from a plurality of nozzles and which are arranged in a direction intersecting a rotation direction of the transfer member;a second printhead provided on a downstream side of the first printhead with respect to the rotation direction of the transfer member and configured to discharge, from each nozzle of a plurality of nozzle arrays each of which is formed from a plurality of nozzles and which are arranged in the direction intersecting the rotation direction of the transfer member to the image formed on the transfer member by the ink discharged from the first printhead, a transfer accelerator that accelerates transfer of the image formed on the transfer member to the print medium;an inspection unit configured to inspect, based on predetermined inspection data, a discharge state of each of the plurality of nozzles by driving each of the plurality of ...

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Номер записи: 68
23-02-2017 дата публикации

MANAGING PRINTHEAD NOZZLE CONDITIONS

Номер: US20170050429A1
Автор: Anderson Daryl E, Martin Eric T.
Принадлежит: Hewlett-Packard Development Company, L.P.

In an example, a method of managing a nozzle condition test on a printhead includes instructing a printhead to perform impedance measurements on a plurality of nozzles in a first set of nozzles. The method also includes retrieving from the printhead, an impedance measurement result corresponding with each nozzle, where each impedance measurement result indicates a nozzle condition of its corresponding nozzle. 1. A method of managing a nozzle condition test on a printhead comprising:instructing a printhead to perform impedance measurements on a plurality of nozzles in a first set of nozzles; andretrieving from the printhead, an impedance measurement result corresponding with each nozzle, each impedance measurement result indicating a nozzle condition of its corresponding nozzle.2. A method as in claim 1 , wherein retrieving an impedance measurement result corresponding with each nozzle comprises retrieving each impedance measurement result from a distinct printhead register that corresponds with a nozzle column to which the nozzle belongs.3. A method as in claim 1 , wherein retrieving an impedance measurement result comprises retrieving a combined impedance measurement result from a single cumulative register on the printhead claim 1 , the combined impedance measurement result indicating a nozzle condition of at least one nozzle within the first set of nozzles.4. A method as in claim 1 , wherein the first set of nozzles comprises one nozzle from each of a plurality of nozzle columns.5. A method as in claim 1 , further comprising claim 1 , determining from each impedance measurement result whether a corresponding nozzle is functioning properly.6. A method as in claim 5 , further comprising:instructing the printhead to perform impedance measurements on a second set of nozzles when each nozzle in the first set of nozzles is functioning properly; andinstructing the printhead to perform impedance measurements on the first set of nozzles again if a nozzle in the first set ...

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Номер записи: 69
22-02-2018 дата публикации

RECORDING HEAD AND INKJET RECORDING APPARATUS

Номер: US20180050544A1
Автор: Doi Tsukasa, Suzuki Fumiko, Tanaka Hirokazu
Принадлежит:

A light blue ink discharge opening array unit is located between cyan ink discharge opening array units, between the magenta ink discharge opening array units, and not between the black ink discharge opening array unit. 4. The recording head according to claim 1 , wherein the first color is cyan claim 1 , the second color is magenta claim 1 , the third color is light blue claim 1 , and the fourth color is black.5. The recording head according to claim 1 , wherein the number of colors to be reproduced using both the ink of the third color and the ink of the fourth color is smaller than the number of colors to be reproduced using both the ink of the first color and the ink of the third color and is smaller than the number of colors to be reproduced using both the ink of the second color and the ink of the third color.6. The recording head according to claim 1 , wherein the plurality of discharge opening array units is arranged in such a manner that the two fourth discharge opening array units are located between the two first discharge opening array units and between the two second discharge opening array units.7. The recording head according to claim 1 , wherein the plurality of discharge opening array units is arranged in such a manner that the two second discharge opening array units are located between the two first discharge opening array units.9. The recording head according to claim 8 , wherein the fifth color is yellow.10. The recording head according to claim 8 , wherein the plurality of discharge opening array units consists of only eight discharge opening array units which are the two first discharge opening array units claim 8 , the two second discharge opening array units claim 8 , the one third discharge opening array unit claim 8 , the two fourth discharge opening array units claim 8 , and the one fifth discharge opening array unit.11. The recording head according to claim 8 ,wherein each of the plurality of discharge opening array units includes at ...

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Номер записи: 70
21-02-2019 дата публикации

Printing control device, printing apparatus, Control method of printing control device, and program

Номер: US20190054736A1
Автор: Terasawa Hirofumi
Принадлежит: SEIKO EPSON CORPORATION

Provided is a printer control device that controls a printer that includes an ink jet head unit that has head arrays, in which three or more ink jet heads for ejecting ink from nozzle arrays are aligned in a nozzle array extending direction, the printer control device includes a head control section that causes an ink jet head unit to execute printing without using a designated head that is an ink jet head designated and all ink jet heads aligned on one side in the nozzle array extending direction with reference to the designated head, in a designation mode, in which inhibition of use of the ink jet heads is designated. 1. A printing control device that controls a printing apparatus provided with a head unit that has head arrays , in which three or more heads for ejecting ink from nozzle arrays are aligned in a first direction that is a nozzle array extending direction , the device comprising:a printing control section that causes the head unit to execute printing without using a designated head that is a head designated and all the heads aligned at least one side in the first direction with reference to the designated head, in a designation mode in which inhibition of use of the head is designated.2. The printing control device according to claim 1 , further comprising:an error detection section that detects an error in the heads; anda designation section that designates the head with the error as the designated head for the printing control section in a case in which the error detection section detects the error.3. The printing control device according to claim 1 ,wherein in a case in which all the heads aligned on one side in the first direction with reference to the designated head are not used, the printing control section causes the head unit to execute printing without using all the heads aligned on the one side in the first direction, the number of which aligned in the first direction from the designated head is the smallest.4. The printing control device ...

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Номер записи: 71
02-03-2017 дата публикации

LIQUID EJECTING APPARATUS, CONTROL DEVICE, RECORDING SYSTEM, AND PROGRAM

Номер: US20170057218A1
Автор: Zhang Junhua
Принадлежит: SEIKO EPSON CORPORATION

A liquid ejecting apparatus includes a liquid ejecting head that is provided with a plurality of nozzle openings that discharge a liquid, and pressure generation units that generate pressure changes in pressure generation chambers that are respectively in communication with the nozzle openings, a detection unit that detects a discharge fault of liquid droplets of the liquid ejecting head for each of the nozzle openings, and a control unit that controls the pressure generation units, in which the control unit has a discharge prohibition mode in which the driving of a pressure generation unit that corresponds to a nozzle opening in which a discharge fault is detected, is prohibited after the corresponding discharge fault is detected while recording is underway. 1. A liquid ejecting apparatus comprising:a liquid ejecting head that is provided with a plurality of nozzle openings that discharge a liquid, and pressure generation units that generate pressure changes in pressure generation chambers that are respectively in communication with the nozzle openings;a detection unit that detects a discharge fault of a liquid droplet of the liquid ejecting head for each of the nozzle openings; anda control unit that controls the pressure generation units,wherein the control unit has a discharge prohibition mode,wherein, in the discharge prohibition mode, a driving of the pressure chamber unit corresponding to the nozzle opening in which the discharge fault is detected, is prohibited after the corresponding discharge fault is detected while recording is underway.2. The liquid ejecting apparatus according to claim 1 ,wherein the control unit continues recording using nozzle openings other than a nozzle opening in which the discharge fault is detected in the discharge prohibition mode.3. The liquid ejecting apparatus according to claim 2 ,wherein the control unit continues recording using recording data in which discharge from a nozzle opening in which the discharge fault is ...

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Номер записи: 72
02-03-2017 дата публикации

TESTING A PRINTHEAD

Номер: US20170057219A1
Автор: Portela Mata Laura, SORIANO FOSAS David
Принадлежит: Hewlett-Packard Development Company, L.P.

A system and method for testing printheads is disclosed. The system comprises an optical sensor mounted on a movable carriage. The optical sensor is moved past a nozzle to be tested on the printhead while the nozzle ejects ink. The output signal of the optical sensor can be used to determine when the trajectory of the ejected ink is improper. 1. A drop ejection device comprising:an optical sensor mounted on a movable carriage, the optical sensor comprising alight source and alight detector, the light source to emit a light beam towards the light detector; anda processor coupled to memory, the memory comprising computer readable instructions to test a nozzle of a head that, when executed by the processor, cause the device to:move the carriage, with the optical sensor, relative to the nozzle being tested such that a width of the light beam passes under the nozzle being tested from a leading side of the beam to a trailing side of the beam;fire multiple bursts of multiple drops from the nozzle being tested into the light beam whilst the carriage moves the light beam underneath the nozzle being tested; andanalyze a signal from the light detector to evaluate operation of the nozzle being tested.2. The device of claim 1 , wherein the instruction claim 1 , when executed claim 1 , cause the carriage to move at a constant velocity.3. The device of claim wherein the instructions claim 1 , when executed claim 1 , cause a gap in time between the bursts of multiple drops.4. The device of claim 3 , wherein the gap in time between the bursts of multiple drops is between 100 and 2000 microseconds.5. The device of claim 1 , wherein each burst of drops comprises 4-20 drops.6. The device of claim 1 , wherein the instructions claim 1 , when executed claim 1 , cause drops in a burst to be fired at a frequency between 6-24 kHz.7. The device of claim 1 , wherein the device comprises a printhead to eject ink and the carriage moves in a direction parallel with a direction in which a print ...

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Номер записи: 73
04-03-2021 дата публикации

PRINTING APPARATUS AND CONTROL METHOD THEREFOR

Номер: US20210060927A1
Автор: Chikuma Toshiyuki, Fukasawa Takuya, Kano Yutaka, Oikawa Yuhei, Sato Kohei
Принадлежит:

A method for inspecting an ink discharge status based on a temperature change of an energy generating element comprises: calculating a difference value between a value obtained by statistics of pieces of information indicating ink discharge statuses obtained for a plurality of nozzles close to a target nozzle and the information obtained for the target nozzle; comparing the calculated difference value with a predetermined threshold; and judging the ink discharge status for the target nozzle based on a result of the comparison. This enables to appropriately detect a nozzle which is in a discharge failure status due to an ink droplet adhered to a discharge surface of a printhead or the like. 1. A printing apparatus comprising:a printhead including a plurality of nozzles each configured to discharge ink, a plurality of energy generating elements respectively provided in the plurality of nozzles and each configured to generate energy used for discharging the ink from the nozzle, a plurality of detection elements provided in correspondence with the plurality of energy generating elements, and an output portion configured to output a signal indicating ink discharge statuses of the plurality of nozzles using the plurality of detection elements;an inspection unit configured to inspect the ink discharge status while changing a threshold for judging the discharge status of a target nozzle based on the signal output by the output portion;an obtaining unit configured to obtain, for the target nozzle, information concerning a change point at which a judgment result obtained by inspecting the ink discharge status by the inspection unit changes;a calculation unit configured to calculate a difference value between a value obtained by statistics of pieces of information obtained by the obtaining unit for a plurality of nozzles close to the target nozzle and the information obtained by the obtaining unit for the target nozzle;a first comparison unit configured to compare the ...

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Номер записи: 74
05-03-2015 дата публикации

Controllable test-pulse width and position for self-test ground fault circuit interrupter

Номер: US20150062760A1
Автор: Stephen Simonin
Принадлежит: Hubbell Inc

A circuit interrupting device having an auto-monitoring circuit for periodically testing various functions and structures of the device. The auto-monitoring circuit initiates an auto-monitoring routine which, among other things, generates a self-test fault condition and determines whether the detection mechanisms within the device properly detect the self-test fault. A test fault circuit is configured to generate one or more test pulses that cause the self-test fault condition and the test pulses are generated to occur outside of an active region of the fault detection circuit.

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Номер записи: 75
20-02-2020 дата публикации

DROPLET JETTING DEVICE

Номер: US20200055311A1
Автор: Shoji Susumu, Watanabe Masao, WATANABE YASAO
Принадлежит:

A droplet jetting apparatus includes: a nozzle that ejects a jet of liquid droplets; a detector that detects a hand or an object in a flight path of liquid droplets from the nozzle; a pump including a suction portion for suction of liquid, and a discharge portion which is connected to the nozzle and discharges the liquid which has been sucked into the suction portion; a driver which by rotation of a cam, sucks liquid into the pump and discharges the liquid in a compressed state; and controller which actuates the driver. When the detector detects the hand or object, the controller actuates the pump by rotation of the cam, and ejects a jet of liquid in droplet form from the nozzle. 1. A droplet jetting apparatus which is a compact liquid ejection device and ejects a jet of liquid in droplet form when placed on a predetermined mounting surface , comprising:a nozzle that ejects a jet of liquid droplets in a predetermined direction;detecting means that detects a liquid droplet-impingement target object including a hand in a flight path of liquid droplets from the nozzle, and upon detection of the liquid droplet-impingement target object, outputs a target detection signal;a pump comprising a suction portion for suction of liquid, and a discharge portion which is connected to the nozzle and discharges the liquid which has been sucked into the suction portion;driving means which comprises a cam and by rotation of the cam, drives the pump to suck liquid and discharge the liquid in a compressed state; andcontrol means which actuates the driving means in response to the detection signal,the control means operating the driving means in a manner to rotate the cam in response to the detection signal, actuating the pump by rotation of the cam, and ejecting a jet of predetermined amount of liquid in droplet form from the nozzle.2. The droplet jetting apparatus according to claim 1 ,wherein the detecting means can detect the liquid droplet-impingement target object at a distance ...

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Номер записи: 76
22-05-2014 дата публикации

Gfci with cycle counter

Номер: US20140139345A1
Автор: Jeffrey P. Baldwin, Marcus J. Shotey
Принадлежит: Hubbell Inc

Systems and methods for providing end-of-life functionality in an electrical component using a count of plugging operations are shown. In some configurations, a GFCI counts plugging operations and then provides an LED end-of-life indication when a threshold of plugging operations is met.

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Номер записи: 77
10-03-2022 дата публикации

COMPENSATING OVER-SATURATION DUE TO DYE-ENRICHED COLORANT

Номер: US20220078310A1
Автор: Munoz Jaime Juan, QIAN LI, Rosello Maxime
Принадлежит: Hewlett-Packard Development Company, L.P.

A method is described in which image data of an image to be printed is obtained wherein the image data includes data of each colorant to be printed. The image data of each colorant to be printed is analysed to detect areas of the image in which dye-enriched colorant will occur during printing. The image data is modified to compensate for over-saturation due to the dye-enriched colorant in the detected areas and the image is printed based on the modified image data. 1. A method comprising:obtaining image data of an image to be printed, the image data including data of each colorant to be printed;analysing the image data of each colorant to be printed to detect areas of the image in which dye-enriched colorant will occur during printing;modifying the image data to compensate for over-saturation due to the dye-enriched colorant in the detected areas; andprinting the image based on the modified image data.2. A method in accordance with the method of claim 1 , whereinthe analysis of the image data is based on at least one of: idle time of a nozzle of a printhead, the type of colorant, and the contone values of the different image areas.3. A method in accordance with the method of claim 1 , whereinthe analysis of the image data is further based on at least one of: masking, resolution, print speed, number of passes, firing frequency of each nozzle, temperature and humidity in a print chamber, and a trickle warming temperature.4. A method in accordance with the method of claim 1 , whereinthe analysis of the image data includes calculating a dye-enrichment concentration of each nozzle of a printhead.5. A method in accordance with the method of claim 1 , whereinthe analysis of the image data includes calculating a number of pixels in which dye-enriched colorant will be printed by each nozzle.6. A thermal inkjet printer comprising:a printhead comprising a plurality of nozzles;an image analysing module to analyse image data of an image to be printed, the image data including ...

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Номер записи: 78
01-03-2018 дата публикации

GROUND FAULT CIRCUT INTERRUPTER HAVING REVERSED WIRING PROTECTION FUCTION

Номер: US20180061605A1
Автор: Huang Jinhe
Принадлежит:

A ground fault circuit interrupter with a reversed wiring protection function is provided. The ground fault circuit interrupter may include a main circuit switch, a middle layer bracket, a reset button, a trip coil, an electromagnetic trip mechanism, a lifting piece, a locking piece, and an elastic reset mechanism. Sides of the lifting piece may be sleeved upon live line and neutral line metal rods, respectively. Reset springs may be sleeved upon the metal rods. In a correct wiring state, an upper end of the live line metal rod may be in conductive contact with a live line movable metal sheet of the main circuit switch, and an upper end of the neutral line metal rod may be in conductive contact with a neutral line movable metal sheet of the main circuit switch, the movable metal sheets extending from the power load end. 1. A ground fault circuit interrupter with a reversed wiring protection function , comprising:a main circuit switch;a middle layer bracket;a reset button;a trip coil;an electromagnetic trip mechanism;a lifting piece;a locking piece, the locking piece capable of vertically slipping relative to a lifting direction of the lifting piece; andan elastic reset mechanism disposed at a tail end of the locking piece, a first side and a second side of the lifting piece are sleeved upon a live line metal rods and a neutral line metal rod, respectively;', 'a lower end of the live line metal rod is sleeved with a live line reset spring;', 'a lower end of the neutral line metal rod is sleeved with a neutral line reset spring;', 'in a correct wiring state, an upper end of the live line metal rod is in conductive contact with a live line movable metal sheet of the main circuit switch, the live line movable metal sheet extending from a power load end;', 'in the correct wiring state, an upper end of the neutral line metal rod is in conductive contact with a neutral line movable metal sheet of the main circuit switch, the neutral line movable metal sheet extending from ...

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Номер записи: 79
04-03-2021 дата публикации

SOLID-STATE CIRCUIT BREAKER WITH SELF-DIAGNOSTIC, SELF-MAINTENANCE, AND SELF-PROTECTION CAPABILITIES

Номер: US20210066013A1
Автор: Harris Michael J., Kouroussis Denis, Kumar Binesh, Leoni Davide
Принадлежит: Atom Power, Inc.

A solid-state circuit breaker (SSCB) with self-diagnostic, self-maintenance, and self-protection capabilities includes: a power semiconductor device; an air gap disconnect unit connected in series with the power semiconductor device; a sense and drive circuit that switches the power semiconductor device OFF upon detecting a short circuit or overload of unacceptably long duration; and a microcontroller unit (MCU) that triggers the air gap disconnect unit to form an air gap and galvanically isolate an attached load, after the sense and drive circuit switches the power semiconductor device OFF. The MCU is further configured to monitor the operability of the air gap disconnect unit, the power semiconductor device, and other critical components of the SSCB and, when applicable, take corrective actions to prevent the SSCB and the connected load from being damaged or destroyed and/or to protect persons and the environment from being exposed to hazardous electrical conditions. 1. A solid-state circuit breaker (SSCB) , comprising:line-in and line-out terminals;a power semiconductor device configured between the line-in and line-out terminals;a sense and drive circuit configured to monitor a current flowing through the power semiconductor device and switch the power semiconductor device OFF upon detecting a short circuit or over overload of unacceptably long duration; anda microcontroller unit (MCU) configured to monitor the operability of the power semiconductor device during normal operating conditions when the power semiconductor device is ON, and upon determining that the power semiconductor device has failed or has likely failed, generate an alert indicating that the power semiconductor device has failed or has likely failed.2. The SSCB of claim 1 , further comprising an air gap disconnect unit connected in series with the power semiconductor device claim 1 , between the line-in and line-out terminals claim 1 , configured to form an air-gap between the line-in and line- ...

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Номер записи: 80
28-02-2019 дата публикации

PRINTING APPARATUS AND PRINTING CONTROL APPARATUS

Номер: US20190061340A1
Автор: SUDO Naoki, TAKEUCHI Yasutoshi, USUI Masaya
Принадлежит:

A printing apparatus including a code information detecting unit configured to detect code information in image data, and a printing controller configured to control bidirectional printing to repeat a first scan including ink ejection in accordance with movement of a printing head to a first side in a main scanning direction, a second scan including ink ejection in accordance with movement of the printing head to a second side in the main scanning direction, and medium transport performed between the first scan and the second scan. The printing controller is configured to perform printing by any one of the first scan or the second scan in an area of the code information detected by the code information detecting unit, during the bidirectional printing based on the image data. 1. A printing apparatus configured to perform a scan along a predetermined main scanning direction of a printing head including a plurality of nozzles configured to eject ink , and perform medium transport including relative movement of the printing head and a printing medium along a predetermined sub scanning direction intersecting the main scanning direction to perform printing , the printing apparatus comprising:a code information detecting unit configured to detect code information in image data; anda printing controller configured to control bidirectional printing to repeat a first scan including ink ejection in accordance with movement of the printing head to a first side in the main scanning direction, a second scan including ink ejection in accordance with movement of the printing head to a second side in the main scanning direction, and the medium transport performed between the first scan and the second scan, whereinthe printing controller is configured to perform printing by any one of the first scan or the second scan in an area of the code information detected by the code information detecting unit, during the bidirectional printing based on the image data.2. The printing apparatus ...

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Номер записи: 81
27-02-2020 дата публикации

Ink Jet Recording Apparatus

Номер: US20200061997A1
Автор: Fukumoto Hiroshi, Kagata Takayoshi, YANO Takeshi
Принадлежит:

An ink jet recording apparatus includes a discharge head including a nozzle discharging ink to a recording medium and a cap capable of covering the nozzle of the discharge head. The ink contains water, a colorant, and an organic compound which is solid at 25.0° C. and which has an octanol/water distribution coefficient of 0.0 or less. The cap includes no ink absorber. 1. An ink jet recording apparatus comprising:a discharge head including a nozzle discharging ink to a recording medium; anda cap configured to cover the nozzle of the discharge head, wherein the ink contains water, a colorant, and an organic compound which is solid at 25.0° C. and which has an octanol/water distribution coefficient of 0.0 or less and the cap includes no ink absorber.2. The ink jet recording apparatus according to claim 1 , wherein the discharge head is reciprocated in a main scanning direction and the recording medium is conveyed in a sub-scanning direction crossing the main scanning direction claim 1 , whereby an image is formed on the recording medium claim 1 , and the area that the recording medium is conveyed per unit time is 15.0 m/h or more.3. The ink jet recording apparatus according to claim 1 , further comprising a platen claim 1 , wherein a surface of the platen faces a nozzle-formed surface provided with the nozzle claim 1 , the recording medium is conveyed between the platen surface and the nozzle-formed surface claim 1 , and the distance between the platen surface and the nozzle-formed surface is 1.5 mm or more.4. The ink jet recording apparatus according to claim 1 , wherein the organic compound is selected from trimethylolpropane claim 1 , polyvinylpyrrolidone claim 1 , urea claim 1 , and thiourea.5. The ink jet recording apparatus according to claim 1 , wherein the ink further contains a humectant.6. The ink jet recording apparatus according to claim 1 , wherein the content of the organic compound in the ink is 3.0% by mass to 20.0% by mass with respect to the whole of ...

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Номер записи: 82
11-03-2021 дата публикации

INK JET RECORDING APPARATUS

Номер: US20210070054A1
Автор: Idaka Mamoru, KITAMURA Atsushi
Принадлежит: KEYENCE CORPORATION

An ink jet recording apparatus I includes a printing head configured to house, on the inside, a nozzle , a charging electrode , a deflection electrode , and a gutter , a maintenance-pattern storing unit configured to store, respectively in association with types of abnormalities, a plurality of kinds of maintenance operations executable in the ink jet recording apparatus I, a flag storing unit configured to store occurrence of an abnormality in the ink jet recording apparatus I as an error flag corresponding to a type of the abnormality, and a control unit configured to select, based on the type of the abnormality corresponding to the error flag stored in the flag storing unit , one maintenance operation out of the plurality of kinds of maintenance operations stored in the maintenance-pattern storing unit and execute the maintenance operation. 1. An ink jet recording apparatus that performs printing by ejecting particulate ink on work , the ink jet recording apparatus comprising:a printing head configured to house, on an inside, a nozzle that ejects ink, a charging electrode that charges the particulate ink ejected from the nozzle, a deflection electrode that deflects a flying direction of the ink charged by the charging electrode, and a gutter that collects the ink undeflected by the deflection electrode, the printing head ejecting the ink deflected by the deflection electrode to an outside;a controller including an ink supply unit that supplies the ink to the nozzle and a solvent supply unit that supplies a solvent to the nozzle;a maintenance-pattern storing unit configured to store, in association with each other, a plurality of different types of abnormalities that occur in the ink jet recording apparatus and a plurality of kinds of maintenance operations executable in the ink jet recording apparatus;a flag storing unit configured to store occurrence of an abnormality in the ink jet recording apparatus as an error flag corresponding to a type of the abnormality; ...

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Номер записи: 83
17-03-2022 дата публикации

SYSTEM AND METHOD FOR DISCERNING ARCING IN ELECTRICAL WIRING

Номер: US20220085597A1
Автор: III William Vernon, MILLER
Принадлежит:

A wiring device including an interrupting device and a controller. The interrupting device electrically connecting one or more line terminals to one or more load terminals when the interrupting device is in a reset condition and disconnecting the line terminals from the load terminals when the interrupting device is in a tripped condition. The controller has an electronic processor and a memory. The controller is configured to monitor a current of the one or more line terminals, identify a presence of an in-rush condition, wherein an in-rush of the current exists when the one or more cycles of current conform with a decay progression envelope, and prevent the tripped condition upon identifying the in-rush condition. 1. A wiring device comprising:an interrupting device electrically connecting one or more line terminals to one or more load terminals when the interrupting device is in a reset condition and disconnecting the line terminals from the load terminals when the interrupting device is in a tripped condition; and{'claim-text': ['identify a presence of an in-rush condition, wherein an in-rush of the current exists when the one or more cycles of current conform with a decay progression envelope, and', 'prevent the tripped condition upon identifying the in-rush condition.'], '#text': 'a controller having an electronic processor and a memory, the controller configured to monitor a current of the one or more line terminals,'}2. The wiring device of claim 1 , wherein the tripped condition is prevented for a predetermined time period upon identifying the in-rush condition.3. A wiring device comprising:an interrupting device electrically connecting one or more line terminals to one or more load terminals when the interrupting device is in a reset condition and disconnecting the line terminals from the load terminals when the interrupting device is in a tripped condition; and{'claim-text': ['identify a presence of a steady-state condition, wherein a steady-state of the ...

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Номер записи: 84
24-03-2022 дата публикации

LIQUID EJECTING DEVICE, CONTROL METHOD FOR LIQUID EJECTING DEVICE AND CONTROL PROGRAM FOR LIQUID EJECTING DEVICE

Номер: US20220088919A1
Автор: ADACHI Hirohisa, HIRATA Hiroki, MAKI Yoichiro, WAKUMOTO Shuji
Принадлежит:

A recording system includes an ejecting unit, a punch unit, and a control unit. The ejecting unit ejects ink onto a sheet transported by a transport unit to form an image. The punch unit forms two through holes aligned in a Y direction with respect to the sheet. The control unit controls ejection of the ink based on image data. When the two through holes are formed in the sheet, the control unit divides a region where an image can be formed into a first region and a second region that is aligned with the first region in a T direction and in which the two through holes are formed. The control unit causes the ejecting unit to eject the ink to form a part of the image in the first region, and causes the ejecting unit not to eject the ink in the second region. 1. A liquid ejecting device , comprising:an ejecting unit configured to eject liquid onto a medium transported by a transport unit to form an image;a hole forming unit configured to form a plurality of through holes, arranged in a width direction intersecting a transport direction of the medium; anda control unit configured to control ejection of the liquid based on image data, whereinthe control unit, when the plurality of through holes are formed in the medium, divides a region in the medium, configured to be formed with an image based on the image data, into a first region, and a second region that is aligned with the first region in the transport direction and in which the plurality of through holes are formed, causes the ejecting unit to eject the liquid, based on the image data, in the first region to form a part of the image, and causes the ejecting unit not to eject the liquid in the second region.2. The liquid ejecting device according to claim 1 , comprising:an operation unit configured to enable setting of a dimension in the transport direction of the second region, whereinthe control unit performs division into the first region and the second region so that a dimension in the transport direction of the ...

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Номер записи: 85
24-03-2022 дата публикации

LIQUID EJECTING DEVICE, CONTROL METHOD FOR LIQUID EJECTING DEVICE AND CONTROL PROGRAM FOR LIQUID EJECTING DEVICE

Номер: US20220088921A1
Автор: ADACHI Hirohisa, MAKI Yoichiro
Принадлежит:

A recording system includes an ejecting unit, a punch unit, and a control unit. The ejecting unit ejects ink onto a sheet transported by a transport unit to form an image. The punch unit forms a plurality of through holes in the sheet. The control unit controls an ejection amount per unit area of ink in the ejecting unit based on image data. Furthermore, the control unit divides a region into a first region not including the through hole, and a second region including the through hole, and controls an ejection amount of the ink in the ejecting unit such that a second ejection amount per unit area when an image is formed in the second region is less than a first ejection amount per unit area when an image is formed in the first region. 1. A liquid ejecting device , comprising:an ejecting unit configured to eject liquid onto a medium transported by a transport unit to form an image;a hole forming unit configured to form a plurality of through holes, arranged in a width direction intersecting a transport direction of the medium; anda control unit configured to control an ejection amount of the liquid per unit area based on image data, whereinthe control unit divides a region in the medium in which an image is formed based on the image data into a first region not including the plurality of through holes, and a second region including the plurality of through holes, and controls an ejection amount of the liquid from the ejecting unit, so that a second ejection amount per unit area when an image is formed in the second region is less than a first ejection amount per unit area when an image is formed in the first region.2. The liquid ejecting device according to claim 1 , whereinthe control unit performs division into the first region and the second region in the transport direction.3. The liquid ejecting device according to claim 1 , comprising:a setting unit configured to set the second ejection amount, whereinthe control unit controls ejection of the liquid from the ...

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Номер записи: 86
07-03-2019 дата публикации

COMPENSATION METHOD FOR FAILED PRINTING NOZZLES

Номер: US20190070848A1
Автор: HACHMANN PETER, MAYER MARTIN, TRACHANAS ILIAS
Принадлежит:

A method corrects for defective printing nozzles in an ink jet printing machine via a computer. The defective printing nozzles are compensated for after the screening process by neighboring printing nozzles applying an increased amount of ink. The method includes precalculating different compensation halftones for different area coverages by the computer, printing the compensation halftones embedded in area coverage halftone areas, evaluating the printed compensation halftones via the computer, and selecting and saving, for every area coverage level, the compensation halftone that best matches the coloration of the original halftone in the respective area coverage halftone area. A defective printing nozzle is detected during production printing by the computer. The local area coverage is determined along the detected defective printing nozzle by the computer. The compensation halftone that has been saved for the determined local area coverage is used to compensate for the defective printing nozzles via the computer. 1. A method for correcting for defective printing nozzles in an ink jet printing machine by a computer , wherein the defective printing nozzles are compensated for after a screening process by neighboring printing nozzles applying an increased amount of ink , which comprises the steps of:precalculating different compensation halftones for different area coverages by means of the computer;printing the compensation halftones which are embedded in area coverage halftone areas;evaluating printed compensation halftones by means of the computer;selecting and saving, for every area coverage level, a compensation halftone that best matches a coloration of an original halftone in a respective area coverage halftone area by means of the computer;detecting a defective printing nozzle during production printing by means of the computer;determining a local area coverage along a detected defective printing nozzle by means of the computer; andusing the compensation ...

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Номер записи: 87
05-06-2014 дата публикации

IMAGE RECORDING APPARATUS, AND RECORDING DENSITY CORRECTION METHOD AND EJECTION TIMING CORRECTION METHOD

Номер: US20140152732A1
Автор: HATANO Keiji, Hayakawa Masahiro
Принадлежит: DAINIPPON SCREEN MFG. CO., LTD.

An image recording apparatus includes a head for ejecting ink, a moving mechanism for moving a recording medium, and a control part for controlling these constituent elements. The control part includes an information storage part, a conversion part, and a correction part. The conversion part converts input image data into converted image data which is suitable for image recording. The information storage part stores an LUT indicating a relation between the input image data and the converted image data for each head and each type of recording medium. The correction part updates the LUT on a representative recording medium on the basis of correction amounts determined in accordance with reference images which are recorded onto the representative recording medium and further updates the LUT on another type of recording medium. By virtue of providing this correction part, it is possible to simplify a correcting operation of recording densities. 18-. (canceled)9. An image recording apparatus for recording an image onto a recording medium , comprising:a plurality of heads arranged in a width direction of a recording medium or arranged in a direction crossing a direction perpendicular to said width direction, for ejecting droplets of ink;a moving mechanism for moving said recording medium relatively with respect to said plurality of heads in said direction perpendicular to said width direction; anda control part for controlling said plurality of heads and said moving mechanism to record an image onto said recording medium by one relative movement of said recording medium with respect to said plurality of heads,wherein each of said plurality of heads is individually changeable to a new head, and said control part comprises:a storage part for storing a plurality of pieces of conversion information corresponding to a plurality of types of recording media and said plurality of heads, respectively, each piece of conversion information corresponding to one type of recording ...

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Номер записи: 88
22-03-2018 дата публикации

PRINTING APPARATUS, PRINTING METHOD, AND NON-TRANSITORY COMPUTER READABLE MEDIUM FOR STORING PROGRAM

Номер: US20180079220A1
Автор: Kakutani Toshiaki
Принадлежит:

A printing apparatus has a plurality of nozzles capable of discharging dark ink and light ink that are of the same type color; the plurality of nozzles includes preceding nozzles that discharge the ink onto the printing medium before the ink discharge of the other nozzles, and succeeding nozzles that discharge the ink onto the printing medium after the ink discharge of the preceding nozzles, and if the amount of the dark ink discharged on the printing target region is larger than a predetermined amount, the printing apparatus discharges a smaller amount of the light ink than the amount of the discharged dark ink onto the printing target region from the plurality of nozzles so that the amount of the light ink discharged from the succeeding nozzles is larger than the amount of the light ink discharged from the preceding nozzles. 1. A printing apparatus comprising:a print head that has a plurality of nozzles capable of discharging dark ink and light ink that are of the same color type and is driven relative to a printing medium in a main scan direction that is a width direction of the printing medium and in a sub-scan direction intersecting the main scan direction;an acquiring section that acquires image data; anda dot forming section that forms dots based on the image data on the printing medium by causing the print head to discharge the ink onto the printing medium while causing the print head to scan a common printing region in the main scan direction multiple times,wherein the plurality of nozzles includes preceding nozzles that discharge the ink onto the printing medium before the ink discharge of the other nozzles, and succeeding nozzles that discharge the ink onto the printing medium after the ink discharge of the preceding nozzles,wherein the dot forming section controls a usage rate of at least any of nozzles included in the preceding nozzles and nozzles included in the succeeding nozzles and controls the amount of at least the light ink to be discharged onto ...

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Номер записи: 89
18-03-2021 дата публикации

Ground Fault Circuit Interrupter (GFCI) Latching Apparatus

Номер: US20210083438A1
Автор: Aromin Victor V, Shatkin Louis J.
Принадлежит:

A GFCI latching apparatus and circuit is provided. The latching apparatus includes a solenoid; a solenoid plunger, wherein the solenoid plunger comprises a groove; a conical spring disposed at one end of the solenoid plunger; a forked latch, wherein the forked latch engages the groove with its forks. The latch also includes a bevel surface. Also included is a contact carrier having a first position when the solenoid is energized and a second position when the solenoid is deenergized. The contact carrier includes a bevel surface for mating with the latch bevel surface when the solenoid is energized. Also included is a GFCI configured to deenergize the solenoid upon the occurrence of a fault to disengage the latch, the latch thereby disengaging from the contact carrier, causing the contact carrier to move from the first position to the second position. The GFCI circuit detects ground faults and deenergizes the solenoid when a ground fault is detected. The GFCI includes GFCI detection circuitry, wherein the GFCI detection circuitry includes an SCR switch for controlling energizing current for the solenoid; SCR Test Bias circuit for biasing the SCR switch; Self-Test Fault circuit for testing the operation of the GFCI detection circuitry; an Isolation circuit for isolating GFCI detection circuit while self-test is preformed; and power supply circuits for powering the GFCI circuit. 12-. (canceled)3. A Ground Fault Circuit Interrupter (GFCI) latching apparatus , the apparatus comprising:a solenoid;a solenoid plunger, wherein the solenoid plunger comprises a groove;a latch, wherein the latch engages the groove;a pair of moveable contact arms;a pair of contacts corresponding to the pair of moveable contact arms;a lifter;a latch in which the latch engages the lifter and the solenoid plunger groove;wherein the lifter is configured to move between a first position which provides electrical continuity between the pair of moveable contact arms when the solenoid is energized and ...

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Номер записи: 90
22-03-2018 дата публикации

IMAGE PROCESSING CIRCUIT FOR MULTI-DROP INKJET HEAD

Номер: US20180084147A1
Автор: SASAKI Yasutaka
Принадлежит: RISO KAGAKU CORPORATION

A calculator performs in parallel gamma correction calculations on gray level values 1 to Z depending on each of target nozzles for each of target pixels containing gray level values other than zero of pixels in image data to be printed by a multi-drop inkjet head including nozzles and having a maximum droplet number Z per pixel, the nozzles of the multi-drop inkjet head including the target nozzles for ink ejection on the respective target pixels. A selector selects a calculation result corresponding to a gray level value of the target pixel from calculation results of the gamma correction calculations performed on the gray level values 1 to Z by the calculator, for each of the target pixels. 1. An image processing circuit comprising:a calculator configured to perform in parallel gamma correction calculations on gray level values 1 to Z depending on each of target nozzles for each of target pixels containing gray level values other than zero of pixels in image data to be printed by a multi-drop inkjet head including nozzles and having a maximum droplet number Z per pixel, the nozzles of the multi-drop inkjet head including the target nozzles for ink ejection on the respective target pixels; anda selector configured to select a calculation result corresponding to a gray level value of the target pixel from calculation results of the gamma correction calculations performed on the gray level values 1 to Z by the calculator, for each of the target pixels.2. The image processing circuit according to claim 1 , further comprising a RAM configured to hold gain tables for the respective nozzles claim 1 , each of the gain tables including gain values for gamma correction for the respective gray level values 1 to Z claim 1 ,wherein the calculator is configured to perform the gamma correction calculations by using the gain values.3. The image processing circuit according to claim 1 , whereinthe image processing circuit is implemented in a FPGA, andthe calculator and the ...

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Номер записи: 91
23-03-2017 дата публикации

FAULT PROTECTION DEVICES AND METHODS FOR POWER SYSTEMS

Номер: US20170084414A1
Автор: Moss Steven J., Rozman Gregory I.
Принадлежит:

A power system includes a direct current (DC) channel connected to a high-voltage direct current (HVDC) bus, an HVDC bus ground fault protection device connected to the HVDC bus, and a DC channel ground fault protection device connected to the DC channel. The HVDC bus ground fault protection device is operatively associated with the DC channel ground protection fault device through the DC channel to cause the DC channel ground fault protection device to disconnect the DC channel from the HVDC bus based on a comparison of current imbalance in the DC channel with a DC channel current imbalance threshold when the HVDC bus ground fault protection device determines that current leakage from the HVDC bus exceeds a current leakage threshold of the HVDC bus. 1. A power system , comprising:a DC channel connected to a high-voltage direct current (HVDC) bus;an HVDC bus ground fault protection device connected to the HVDC bus; anda DC channel ground fault protection device connected to the DC channel,wherein the HVDC bus ground fault protection device is operatively connected with the DC channel ground protection fault device through the DC channel and is configured to cause the DC channel ground fault protection device to disconnect the DC channel from the HVDC bus based on current leakage from the HVDC channel and current imbalance in the DC channel.2. A power system as recited in claim 1 , wherein the HVDC bus ground fault protection device includes a current leakage module optically coupled to an AC signal injection module.3. A power system as recited in claim 2 , wherein the AC signal injection module includes an isolation transformer connected in series with a DC current-blocking capacitor claim 2 , the DC current-blocking capacitor being connected between positive and return leads of the HVDC bus.4. A power system as recited in claim 2 , wherein the current leakage module includes a wheatstone bridge connected between positive and return leads of the HVDC bus.5. A power ...

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Номер записи: 92
25-03-2021 дата публикации

FLUID EJECTION DEVICE CAPPING

Номер: US20210086504A1
Автор: STEPHENS Bruce A., Wagner Timothy, Yoo Hyoen-Mu
Принадлежит: Hewlett-Packard Development Company, L.P.

In an example, an apparatus is described that a fluid ejection device to dispense fluid. A local service controller controls dispensing of the fluid by the fluid ejection device under a direction of a fluid ejection controller. The local service controller also initiates, autonomously of the fluid ejection controller, capping of the fluid ejection device in response to the detection of a failure condition by the local service controller. Capping mechanics are provided to cap the fluid ejection device under the direction of the local service controller. 1. An apparatus , comprising:a plurality of fluid ejection devices to dispense fluid; anda plurality of local service controllers, wherein each local service controller of the plurality of local service controllers is to control dispensing of the fluid by a respective fluid ejection device of the plurality of fluid ejection devices under a direction of a fluid ejection controller and to initiate, autonomously of the fluid ejection controller, capping of the respective fluid ejection device in response to a detection of a failure condition by at least one local service controller of the plurality of local service controllers.2. The apparatus of claim 1 , further comprising:a backup power source to provide the plurality of local service controllers with power to initiate capping of the plurality of fluid ejection devices when the failure condition is a loss of primary electrical power.3. The apparatus of claim 2 , further comprising:a voltage monitor coupled to the at least one local service controller for providing an indication as to a status of the primary electrical power.4. The apparatus of claim 1 , wherein the apparatus is a web press.5. The apparatus of claim 1 , wherein the plurality of local service controllers is coupled to allow the plurality of local service controllers to communicate with each other.6. The apparatus of claim 6 , wherein the plurality of local service controllers is coupled in series.7. The ...

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Номер записи: 93
25-03-2021 дата публикации

LIQUID EJECTION APPARATUS AND SYSTEM INCLUDING LIQUID EJECTION APPARATUS

Номер: US20210086517A1
Автор: Nakano Yasuhiro, Sasaki Zenichiro, TODA Yuta
Принадлежит: BROTHER KOGYO KABUSHIKI KAISHA

There is provided a liquid ejection apparatus, including: a head; a signal output circuit; a discharge mechanism; a controller; and a memory in which association information is stored. The controller is configured to: diagnose a degree of defectiveness of the head based on a signal from the signal output circuit; and receive, from a user, an input of discharge amount information. In response to the input of the discharge amount information, the controller is configured to: control the discharge mechanism to discharge a liquid by a discharge amount corresponding to the discharge amount information; and change the association in the association information based on the discharge amount corresponding to the discharge amount information and a discharge amount that corresponds to the degree of the defectiveness of the head. 1. A liquid ejection apparatus , comprising:a head in which a plurality of nozzles are open,a signal generator configured to output a signal such that the signal varies depending on whether an ejection defective nozzle having defectiveness in liquid ejection is included in the nozzles,a discharge mechanism configured to perform a discharge operation in which a liquid in the head is discharged from the nozzles, diagnose a degree of the defectiveness of the head by performing defectiveness determination to determine, based on the signal from the signal output circuit, whether the ejection defective nozzle is included in the nozzles; and', 'receive, from a user, an input of discharge amount information that is based on a result of the defectiveness determination and is related to a discharge amount of the liquid in the discharge operation, and, 'a controller configured toa memory configured to store association information including the degree of the defectiveness of the head associated with the discharge amount of the liquid in the discharge operation, control the discharge mechanism to discharge the liquid by a discharge amount corresponding to the ...

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Номер записи: 94
29-03-2018 дата публикации

PRINTING ELEMENT SUBSTRATE, PRINTHEAD, AND PRINTING APPARATUS

Номер: US20180086057A1
Автор: Umeda Kengo
Принадлежит:

A printing element substrate comprises a correction circuit that corrects a phase difference between a first signal and a second signal, wherein the correction circuit includes a first delay circuit that generates a plurality of first delayed signals having different delay times with respect to the first signal, and a second delay circuit that generates a plurality of second delayed signals having different delay times with respect to the second signal, the correction circuit specifies a phase of the first signal to be output to the driving circuit, on the basis of comparison between the plurality of first delayed signals and the second signal, and the correction circuit specifies a phase of the second signal to be output to the driving circuit, on the basis of comparison between the plurality of second delayed signals and the first signal having the specified phase. 2. The printing element substrate according to claim 1 , wherein a first determination circuit configured to specify one of the plurality of first delayed signals, the one having a rising edge coinciding with a rising edge of the first signal, as the phase of the first signal to be output to the driving circuit, and', 'a second determination circuit configured to specify the phase of the second signal to be output to the driving circuit, on the basis of one of the plurality of second delayed signals, the one having a rising edge coinciding with a falling edge of the first signal specified by the first determination circuit., 'the correction circuit includes'}3. The printing element substrate according to claim 2 , further comprising:a first selection circuit configured to select one of the plurality of first delayed signals, the one having the phase specified by the first determination circuit, as the first signal to be output to the driving circuit; anda second selection circuit configured to select one of the plurality of second delayed signals, the one having a delay time smaller than a delay time ...

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Номер записи: 95
12-03-2020 дата публикации

Remote Operated Ground Fault Circuit Breaker

Номер: US20200083012A1
Автор: Michael Fasano, Simon Cordner, William P. Frederick
Принадлежит: Carling Technologies Inc

A circuit interrupter electrically connects a line terminal to a load terminal in a closed condition and electrically disconnects the line terminal from the load terminal in the open condition. A controller includes a fault detector configured to detect a fault in an electrical signal in a load circuit, such that when a fault is detected on the load circuit, the fault detector causes actuation of the interrupter to the open condition. The controller is adapted to receive an off command, and in response to the off command, generate a simulated fault in the load circuit, such that the fault detector causes actuation of the interrupter to the open condition, such that one and the same interrupter is employed for both fault tripping and commanded tripping.

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Номер записи: 96
12-03-2020 дата публикации

Circuit Breaker With Slide To Test Function

Номер: US20200083013A1
Автор: Bugryn James, Fasano Michael
Принадлежит:

A fault detector test device includes a test switch including a pivotable lever arm having a first end pivotably connected to rotate about an axis and a second end pivotable in an arc around the axis between an active position and an inactive position. A slide member has a first end accessible by an operator and a second end that cooperates with the second end of the lever arm, the slide member being slideable with respect to the axis of the lever arm such that the second end of the slide member slides in a plane that is substantially tangential to the arc in which the second end of the lever arm pivots. The second end of the slide member and the second end of the lever arm cooperate such that generally planar sliding motion of the slide member is translated into pivoting motion of the lever arm. 1. A circuit interrupting device comprising:a housing;a line terminal disposed on the housing, said line terminal adapted to be connected to a power source circuit to provide electrical power;a load terminal disposed on the housing, said load terminal adapted to be connected to a load circuit;an interrupter disposed within the housing and electrically coupled between said line terminal and said load terminal, said interrupter having an open and a closed condition, wherein said interrupter electrically connects said line terminal to said load terminal in the closed condition and electrically disconnects said line terminal from said load terminal in the open condition;a fault detector configured to detect a fault in an electrical signal in said load circuit, wherein when a fault is detected said interrupter is actuated to the open condition; and a test switch comprising a pivotable lever arm with a first end pivotably connected to rotate about an axis that is fixed with respect to the housing and a second end that is pivotable in an arc around the axis between an active position and an inactive position, said test device generating the test signal when the second end of the ...

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Номер записи: 97
30-03-2017 дата публикации

NOZZLE-CLOGGING DETERMINING DEVICE

Номер: US20170087821A1
Автор: KODAIRA MASAKI, Miyashita Eiji, MIZUSAKI AKIHIKO, SAKURAI KAZUMI, TAKIZAWA Naoki
Принадлежит: MIMAKI ENGINEERING CO., LTD.

A nozzle-clogging determining device is provided for detecting nozzle clogging without causing an increase in the cost. A nozzle-clogging determining device is configured to detect pass of droplets ejected from a plurality of nozzles of a head of an inkjet printer, and includes a droplet detector and a determination controller. The droplet detector includes a light emitter configured to emit detection light for detecting pass of droplets in a direction intersecting with a traveling direction of droplets, and a light receiver configured to receive the detection light. The determination controller consecutively ejects a plurality of droplets from each nozzle of the head at equal intervals, and has a threshold for performing determination on nozzle clogging on the basis of a light interception rate of the detection light which the light receiver receives when droplets are positioned inside a spot of the detection light which the light receiver receives. 1. A nozzle-clogging determining device configured to detect pass of a plurality of droplets ejected from nozzles of a head of an inkjet printer , thereby performing determination on clogging of the nozzles , and the nozzle-clogging determining device comprising: a light emitter, configured to emit detection light for detecting pass of the droplets in a direction intersecting with a traveling direction of the droplets; and', 'a light receiver, configured to receive the detection light,, 'a droplet detector, includingwherein the light emitter, a passage of the droplets and the light receiver are disposed along a light path of the detection light; anda determination controller, configured to eject a plurality of droplets from the nozzles of the head, and perform determination on nozzle clogging on the basis of a light interception rate of the detection light which the light receiver receives when the droplets are positioned inside a spot of the detection light which the light receiver receives.2. The nozzle-clogging ...

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Номер записи: 98
30-03-2017 дата публикации

IMAGE FORMATION DEVICE AND NON-TRANSITORY COMPUTER-READABLE MEDIUM

Номер: US20170087822A1
Автор: KAYANAKA Yoshihisa
Принадлежит:

An image formation device has a head including plural first nozzle holes and plural second nozzle holes to eject an ink. In a first ejection processing, the head ejects a second ink from the first predetermined number and a second predetermined number of the second nozzle holes while moving in a main scan direction. The head moves in a sub scan direction by a first distance of a non-integral multiple of a distance between the adjacent first nozzle holes. The head ejects the second ink from the second nozzle holes while moving in the main scan direction. The head moves from the position of the head after the first ejection processing in the sub scan direction by a second distance of a length of a section over which the first predetermined number of the first nozzle holes are arranged. The head ejects the second ink from the second nozzle holes. 1. An image formation device comprising:a head provided with a plurality of first nozzle holes configured to eject a first ink, and a plurality of second nozzle holes configured to eject a second ink, the plurality of second nozzle holes being arranged to a side in the sub scan direction with respect to the plurality of first nozzle holes, the head being configured to form a first ink image and a second ink image on a print medium, by moving relative to the print medium in a main scan direction, ejecting the first ink from the plurality of first nozzle holes, ejecting the second ink from the plurality of second nozzle holes, and moving relative to the print medium in the sub scan direction, the main scan direction being orthogonal to the sub scan direction;a processor; and first ejection processing ejecting the first ink from a first predetermined number of the first nozzle holes and the second ink from the first predetermined number and a second predetermined number of the second nozzle holes while relatively moving the head in the main scan direction;', 'first movement processing relatively moving the head in the sub scan ...

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Номер записи: 99
05-05-2022 дата публикации

LIQUID DISCHARGE APPARATUS AND LIQUID DISCHARGE METHOD

Номер: US20220134731A1
Автор: OTOI Yoshihito
Принадлежит:

A liquid discharge apparatus includes a liquid discharge portion having a liquid discharge port and a liquid discharge unit. The liquid discharge portion performs a liquid discharge to discharge a liquid in a liquid discharge direction. The liquid discharge unit holds the liquid discharge portion and is movable along the liquid discharge direction. The liquid discharge apparatus further includes a first driver to move the liquid discharge unit along the liquid discharge direction, a second driver to move the liquid discharge portion relative to the liquid discharge unit along the liquid discharge direction, an abnormality detector to detect an abnormality of the liquid discharge unit, and circuitry. The circuitry increases an excitation current of the first driver in response to an abnormality detection signal from the abnormality detector or an instruction to clean the liquid discharge portion, and drives the second driver after increasing the excitation current.

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Номер записи: 100