Ambient temperature based flow rates

The volume of ink droplet calibration method and its calibration system, printing apparatus

Techniques for print ink droplet measurement and control to deposit fluids within precise tolerances

An ink printing process employs per-nozzle droplet volume measurement and processing software that plans droplet combinations to reach specific aggregate ink fills per target region, guaranteeing compliance with minimum and maximum ink fills set by specification. In various embodiments, different droplet combinations are produced through different printhead/substrate scan offsets, offsets between printheads, the use of different nozzle drive waveforms, and/or other techniques. These combinations can be based on repeated, rapid droplet measurements that develop understandings for each nozzle of means and spreads for expected droplet volume, velocity and trajectory, with combinations of droplets being planned based on these statistical parameters. Optionally, random fill variation can be introduced so as to mitigate Mura effects in a finished display device. The disclosed techniques have many possible applications.

Method for printing an image with a liquid ink

QUANTITATION AND ANALYSIS OF DROPLETS EJECTED FROM AN INKJET DEVICE

A method for determining either the mass of one or more drops dispensed from an inkjet dispensing device or the concentration of dissolved solutes form one or more drops of a liquid of interest dispensed from an inkjet dispensing device utilizes UV visible spectroscopy. The UV absorption spectra o the constituents of the solution may be compared to predetermined calibration curves to accurately determine mass and concentrations of a single drop.

VERFAHREN ZUM PRÄZISEN REGELN DES VOLUMENS VON AUS EINEM DRUCKKOPF AUSGESTOSSENEN TINTENTRÖPFCHEN

QUANTITATION AND ANALYSIS OF DROPLETS EJECTED FROM AN INKJET DEVICE

A method for determining either the mass of one or more drops dispensed from an inkjet dispensing device or the concentration of dissolved solutes form one or more drops of a liquid of interest dispensed from an inkjet dispensing device utilizes UV visible spectroscopy. The UV absorption spectra o the constituents of the solution may be compared to predetermined calibration curves to accurately determine mass and concentrations of a single drop.

Ink jet printer performance adjustment

An ink jet printer includes an ink supply system and a printhead with nozzles for ejecting ink drops. The printer determines the average size of the ejected ink drops by comparing the number of ink drops ejected in a predetermined time with the quantity of ink delivered through the printers ink supply system during that time. If the determined average ink drop size does not match predetermined ink drop size criteria, the printer adjusts the activation signals for the ink jet nozzles to alter the ink drop size. A solid ink printer determines the quantity of ink delivered through the ink supply system by counting the number of whole or partial ink sticks that pass a predetermined point in the ink supply system. The counter detects a sensing element formed on an external surface of the ink stick. Exemplary detectors include a mechanical arm, or a thermistor to detect a change in the printer melt plate temperature due to a change in the cross sectional area of an ink stick being melted.

METHOD FOR PRINTING USING INKJET HEAD

The present invention relates to a method for printing using an inkjet head composed of discharging a liquid drop which can easily form a desired pattern. The method comprises the steps of: discharging the liquid drop by using the inkjet head to print a test printing pattern on a test substrate; checking whether the liquid drop is discharged with a desired size at a desired position to perform an analysis on the test printing pattern; and adjusting a position where the liquid drop is discharged, an interval between the liquid drops, and the amount of discharging the liquid drop so as to obtain a real printing pattern through the analysis on the test printing pattern. COPYRIGHT KIPO 2017 (AA) Start (BB) End (S11) Print a test print pattern on a test substrate (S13) Analyze the test print pattern (S15) Acquire an actual print pattern (S17) Print the actual print pattern ...

SUBSTRATE TREATMENT APPARATUS, DISCHARGE AMOUNT MEASUREMENT UNIT, AND SUBSTRATE TREATMENT METHOD

The present invention relates to a substrate treatment apparatus. According to one embodiment of the present invention, the substrate treatment apparatus comprises: a support unit supporting a substrate; a nozzle unit having one or more heads injecting treatment solution to the substrate supported by the support unit; and a discharge amount measurement unit measuring a discharged amount of the treatment solution discharged from the nozzle. The discharge amount measurement unit can comprise: a stage providing a space where the discharge amount of the treatment solution is measured; a roller member supplying a test film to and recovering the test film from the stage, wherein the test film is to measure the discharge amount; and a suction member sucking the treatment solution discharged on the test film. COPYRIGHT KIPO 2016 ...

DETERMINING COLOR RESPONSES

In an example, a method is described. The method includes receiving a color response profile associated with a first color calibration pattern printed on a first medium. The method further includes determining a drop weight ratio associated with the first medium based on a color response profile for the first medium and a color response profile associated with a reference color calibration pattern printed on a reference medium. The method further includes determining an anticipated color response profile associated with a second medium based on the drop weight ratio associated with the first medium and a pre-determined color response profile associated with the second medium.

PROCEDURE FOR PRECISE REGULATING OF THE VOLUME OF FROM A PRINT HEAD DISCHARGING INK DROPLET

Printhead control system and inkjet printer system

本公开涉及一种用于打印机的打印头控制系统，其中打印机包括至少一个包括用于喷射打印流体的多个喷嘴的打印头，其中喷嘴包括喷射不同滴重的墨滴的高滴重喷嘴和低滴重喷嘴，并且均被布置为在打印介质上喷射打印流体，以在打印介质的框区域中打印图像并且在打印介质的吐杆区域中清洁喷嘴；打印机进一步包括用于相对于打印头移动打印介质的传送单元，其中打印介质包括用于打印图像的框区域和用于清洁喷嘴的吐杆区域；打印头控制设备包括：用于确定位于打印介质的框区域上方的喷嘴的第一组和位于打印介质的吐杆区域上方的喷嘴的第二组的模块；用于操作第一组的高滴重喷嘴，以在框区域中喷射打印流体并打印图像的模块；用于禁用第一组的低滴重喷嘴，以不在框区域中喷射打印流体的模块；和用于操作第二组的高滴重喷嘴和低滴重喷嘴，以在吐杆区域中交替喷射打印流体的模块。

SUBSTRATE TREATMENT APPARATUS, DISCHARGE AMOUNT MEASUREMENT UNIT, AND SUBSTRATE TREATMENT METHOD

The present invention relates to a substrate treatment apparatus. According to one embodiment of the present invention, the substrate treatment apparatus comprises: a support unit supporting a substrate; a nozzle unit having one or more heads injecting treatment solution to the substrate supported by the support unit; and a discharge amount measurement unit measuring a discharged amount of the treatment solution discharged from the nozzle. The discharge amount measurement unit comprises: a stage providing a space where the discharged amount of the treatment solution is measured; a roller member supplying a test film to and recovering the test film from the stage, wherein the test film is to measure the discharged amount; and a solidifying member solidifying the treatment solution discharged on the test film. COPYRIGHT KIPO 2016 ...

Ink jet printing apparatus and ink jet printing method utilizing ink and process liquid

The present invention provides an ink jet printing apparatus and an ink jet printing method in which if an image is printed using ink and a process liquid serving to improve the printability of the ink, degradation of print image quality can be suppressed which results from a rise in the temperature of a print head. To achieve this, the present invention reduces the amount of process liquid ejected from a process liquid ejection section capable of ejecting a process liquid, with increasing temperature of an ink ejection section capable of ejecting ink.

Droplet deposition head and method of providing adjustment data therefor

QUANTITATION AND ANALYSIS OF DROPLETS EJECTED FROM AN INKJET DEVICE

A method for determining either the mass of one or more drops dispensed from an inkjet dispensing device or the concentration of dissolved solutes form one or more drops of a liquid of interest dispensed from an inkjet dispensing device utilizes UV visible spectroscopy. The UV absorption spectra o the constituents of the solution may be compared to predetermined calibration curves to accurately determine mass and concentrations of a single drop.

Printing apparatus, printing method, and medium

Authentication value for print head die based on analog device electrical characteristics

A print head die includes a storage element. The print head die includes a plurality of analog devices. The storage element is to store an authentication value. The authentication value is generated based on comparisons of the measured electrical characteristics of at least some of the analog devices.

EJECTION APPARATUS, EJECTION METHOD, ARTICLE MANUFACTURING APPARATUS, AND STORAGE MEDIUM

Provided is an ejection apparatus capable of ejecting a fluid appropriately from all nozzles. The ejection apparatus includes: ejection unit having a plurality of nozzles for ejecting a fluid in a liquid state; and control unit configured to control ejection of the fluid from each of the plurality of nozzles by applying a drive signal to an ejection energy generation element included in the nozzle. The control unit has an adjustment table for adjustment of the drive signal for each of the nozzles, and adjusts ejection from each of the nozzles based on an ejection result of the nozzle obtained by obtaining unit and the corresponding adjustment table.

Droplet deposition head and method of providing adjustment data therefor

A method of providing adjustment data for a droplet deposition head comprises using test data collected by operating the droplet deposition head (or a test droplet deposition head) using a set of test waveforms, at a number of frequencies within a test range, and by recording the volume, volr and velocity velr of the thus-ejected droplets; each test waveform includes a basic drive waveform and a number of adjusted drive waveforms which include adjustment of a particular waveform parameter this waveform parameter is a continuous variable, such as pulse width or pulse amplitude; adjustment values are determined corresponding to a number of adjustment frequencies, each adjustment value corresponding to an amount of adjustment for the waveform parameter that, based on the test data, is expected to result in adjusted values for droplet volume and velocity of, respectively, vola and vela, which are substantially equal to targeted values for droplet volume and velocity, volt and velT. The method ...

Coating method, coating apparatus and light emitting device

Liquid discharge head and liquid discharge apparatus having cover member with enhanced rigidity

A cover member includes two end regions located at two ends in a first direction, and two beam portions which extend in the first direction and connect the two end regions together and which, together with the two end regions, form a single opening that exposes a plurality of discharge ports. When a width of the opening is denoted as a [mm], a minimum length in the first direction of the end regions is denoted as c [mm], a modulus of longitudinal elasticity of the cover member is denoted as E [GPa], and a thickness of the cover member is denoted as t [mm], the following expression is established: c ≥ 10 ⁢ ( a 25 ) 4 ( t 0.3 ) 3 ⁢ ( E 200 ) .

Coating Method, Coating Device and Light-emitting Device

A coating method, a coating device and a light-emitting device, the coating method comprises: controlling an ink supply device to stop supplying ink to a micro nozzle when it is determined that the lowest end of an ink droplet from the micro nozzle reaches a first position; determining that the distance between the end of the micro nozzle and a substrate reaches a second distance, the second distance being preset; controlling the ink supply device to continue to supply ink, and controlling the micro nozzle to move relative to the substrate for a pattern coating. The disclosure provides a good pattern forming solution, thereby avoiding the technical problem in the prior art of inkjet printing apparatuses easily causing nozzle clogging. 1. A coating method , comprising:{'b': 40', '50', '40, 'controlling an ink supply device to stop supplying ink to a micro nozzle () when it is determined that a lowest end of an ink droplet () from the micro nozzle () reaches a first position;'}{'b': 40', '20, 'determining that a distance between an end of the micro nozzle () and a substrate () reaches a second distance, wherein the second distance is preset; and'}{'b': 40', '20, 'controlling the ink supply device to continue to supply ink, and controlling the micro nozzle () to move relative to the substrate () for a pattern coating.'}2405040. The method as claimed in claim 1 , wherein before controlling the ink supply device to stop supplying ink to the micro nozzle () when it is determined that the lowest end of the ink droplet () from the micro nozzle () reaches the first position claim 1 , the method further comprises:{'b': 40', '20, 'controlling the end of the micro nozzle () to be positioned in a second position, wherein a distance from the first position to the second position is a first distance, the first distance is preset, and the first position is below the second position relative to the substrate (); and'}controlling the ink supply device to start supplying ink.3405040. ...

Printhead control system and inkjet printer system

The present disclosure relates to a printhead control system for a printer, wherein the printer includes at least one printhead comprising a plurality of nozzles for ejecting printing fluid, wherein the nozzles include high drop weight nozzles and low drop weight nozzles ejecting drops of different drop weight, and are each arranged to eject printing fluid on a print medium such as to print images in frame areas of the print medium and such as to clean nozzles in spit bar areas of the print medium; the printer further includes a transport unit for moving the print medium relative to the printhead, wherein the print medium includes frame areas for printing images and spit bar areas for cleaning the nozzles; the printhead control device including: a module to determine a first group of said nozzles located over a frame area of the print medium and a second group of said nozzles located over a spit bar area of the print medium; a module to operate the high drop weight nozzles of the first ...

Image processing apparatus, image processing method, and image processing system

An image processing apparatus includes an acquiring unit, a first calculating unit, a setting unit, a second calculating unit, a first generating unit, and a second generating unit. The acquiring unit acquires image data of an image to be formed by a recording unit using an inkjet system. The first calculating unit calculates a thickness of ejected ink for each pixel based on the image data. The setting unit sets a target thickness of the image. The second calculating unit calculates a difference between the target thickness and the thickness of ink for each pixel. The first generating unit generates complementary data, in which an ejection amount of an additional droplet to realize a thickness corresponding to the difference is defined for each pixel. The second generating unit generates print data containing the image data and the complementary data.

PRINTHEAD CONTROL SYSTEM AND INKJET PRINTER SYSTEM

The present disclosure relates to a printhead control system for a printer, wherein the printer includes at least one printhead comprising a plurality of nozzles for ejecting printing fluid, wherein the nozzles include high drop weight nozzles and low drop weight nozzles ejecting drops of different drop weight, and are each arranged to eject printing fluid on a print medium such as to print images in frame areas of the print medium and such as to clean nozzles in spit bar areas of the print medium; the printer further includes a transport unit for moving the print medium relative to the printhead, wherein the print medium includes frame areas for printing images and spit bar areas for cleaning the nozzles; the printhead control device including: a module to determine a first group of said nozzles located over a frame area of the print medium and a second group of said nozzles located over a spit bar area of the print medium; a module to operate the high drop weight nozzles of the first group such as to eject printing fluid and print an image in the frame area; a module to operate disable the low drop weight nozzles of the first group such as to not eject printing fluid in the frame area; and a module to operate the high drop weight nozzles and the low drop weight nozzles of the second group such as to alternately eject printing fluid in the spit bar area.

IMAGE PROCESSING APPARATUS, IMAGE PROCESSING METHOD, AND STORAGE MEDIUM

The present disclosure provides processing for performing highly-accurate density nonuniformity correction while saving the number of patches. A chart generation unit obtains measurement data of the latest test chart. A patch tone calculation unit obtains an output characteristic expressing measurement values for input tone values based on the obtained measurement data and calculates selected tone values to be used as the input tone values for a test chart from the obtained output characteristic. A chart image generation unit generates the test chart by using the calculated selected tone values as the input tone values and not using at least one initial tone value as the input tone value.

System and method for missing inkjet compensation in a multi-level inkjet printer

A method of compensating for an inoperable inkjet in an inkjet printer that forms printed images with multiple drop sizes has been developed. The method includes identifying at least one neighboring pixel in a region of multi-bit halftoned image data around a pixel corresponding to the inoperable inkjet and modifying the at least one neighboring pixel to enable an inkjet that neighbors the inoperable inkjet to eject an ink drop during printing operation to compensate for the inoperable inkjet.

Techniques for Print Ink Droplet Measurement and Control to Deposit Fluids within Precise Tolerances

An ink printing process employs per-nozzle droplet volume measurement and processing software that plans droplet combinations to reach specific aggregate ink fills per target region, guaranteeing compliance with minimum and maximum ink fills set by specification. In various embodiments, different droplet combinations are produced through different printhead/substrate scan offsets, offsets between printheads, the use of different nozzle drive waveforms, and/or other techniques. These combinations can be based on repeated, rapid droplet measurements that develop understandings for each nozzle of means and spreads for expected droplet volume, velocity and trajectory, with combinations of droplets being planned based on these statistical parameters. Optionally, random fill variation can be introduced so as to mitigate Mura effects in a finished display device. The disclosed techniques have many possible applications.

Apparatus and method of detecting ink-discharge amount for printer maintenance

SYSTEM AND METHOD FOR MISSING INKJET COMPENSATION IN MULTI-LEVEL INKJET PRINTER

A method of compensating for an inoperable inkjet in an inkjet printer that forms printed images with multiple drop sizes has been developed. The method comprises the following steps of: identifying at least one neighboring pixel in a region of multi-bit halftone image data around a pixel corresponding to the inoperable inkjet; and modifying the neighboring pixel to enable an inkjet that neighbors the inoperable inkjet to eject an ink drop during printing operation to compensate for the inoperable inkjet. COPYRIGHT KIPO 2017 (204) Identify inoperable inkjet (208) Identify a multi-bit pixel to be printed in a column of halftone image data corresponding to the inoperable inkjet (212) Perform an ordered search in an area surrounding the pixel to identify a neighboring pixel as a potential adoption site for at least a portion of the pixel for the inoperable ink jet (216) Distribute the pixel to one or more neighboring adoption sites based on the size and adoption site of the pixels in the multi-bit ...

INK JETTING METHOD

Provided is an ink jetting method by which an ink can be applied in a desired pattern by using a head having a plurality of nozzles. A pressure generating element for changing a pressure inside a liquid chamber filled with the ink is arranged inside a head (1), and the liquid chamber is provided with nozzles (13, 14, 15) for jetting the ink. The jetting quantity and the jetting speed of ink droplets, which are jetted from the nozzles (13, 14, 15) under the same conditions as those for an actual application pattern, are obtained by a jetting state monitoring device (2), and the obtained information is transmitted to a control device (6). The control device (6) changes a drive waveform of a voltage to be applied to the pressure generating element so that at least the ink jetting quantity or the ink jetting speed is uniform at the nozzles (13, 14, 15).

IMAGING APPARATUS AND METHOD FOR REDUCING BANDING

An imaging apparatus includes a print engine having a printhead that generates ink drops, and a printhead carrier that carries the printhead in a first direction and in a second direction opposite the first direction. A controller determines an initial print direction based on ink drop information obtained by printing patches in the first direction and in the second direction, wherein the ink drop information includes a respective chromatic value of each of the patches. The controller is operatively coupled to the print engine to print an image based on the initial print direction. 120-. (canceled)21. An imaging apparatus , comprising:a print engine having a printhead that generates ink drops, and a printhead carrier that carries the printhead in a first direction and in a second direction opposite the first direction; anda controller that determines an initial print direction based on ink drop information obtained by printing patches in the first direction and in the second direction, wherein the ink drop information includes a respective chromatic value of each of the patches, the controller operatively coupled to the print engine to print an image based on the initial print direction.22. The imaging apparatus of claim 21 , further comprising a scanner to scan the patches to obtain the respective chromatic value of each of the patches.23. The imaging apparatus of claim 21 , wherein the patches include a first patch and a second patch.24. The imaging apparatus of claim 23 , wherein the first patch has a first chromatic value and the second patch has a second chromatic value.25. The imaging apparatus of claim 24 , wherein the controller selects the first direction as the initial print direction if the first chromatic value of the first patch is greater than the second chromatic value of the second patch claim 24 , and selects the second direction as the initial print direction if the second chromatic value of the second patch is greater than the first chromatic ...

Liquid ejecting apparatus and control method of liquid ejecting apparatus

A liquid ejecting apparatus includes: a liquid ejecting head configured to eject liquid contained in a liquid container; a display portion configured to display information; a remaining amount detection portion configured to detect that a remaining amount of the liquid contained in the liquid container becomes less than a threshold value; and a control portion configured to control display of the display portion, in which the control portion causes the display portion to display a calculation remaining amount calculated based on an initial amount of storage of the liquid contained in the liquid container, a total discharge amount of the liquid discharged from the liquid ejecting head, and a correction amount corresponding to a use environment.

Printing apparatus, printing method, and medium

In a printing apparatus including a circulation system circulating a liquid, a volatile component included in the liquid evaporates from an ejection opening and thus characteristics of the liquid involving with concentration or viscosity change. The invention provides a printing apparatus that uses a liquid ejection head including an ejection opening ejecting a liquid, a print element generating energy for ejecting a liquid, and a pressure chamber having the print element provided therein, the printing apparatus including: a circulator configured to circulate the liquid so that the liquid passes through the pressure chamber; and a concentration adjustment unit configured to adjust a concentration of a liquid inside a liquid circulation system by discharging the liquid from the inside of the liquid circulation system and replenishing the liquid into the liquid circulation system from the outside of the liquid circulation system in response to the amount of the discharged liquid.

Adjustierung des Tintenstrahldruckerleistungsvermögens

SYSTEM UND VERFAHREN ZUR KOMPENSATION EINES FEHLENDEN TINTENSTRAHLS IN EINEM MEHRSTUFIGEN TINTENSTRAHLDRUCKER

Ein Verfahren zum Kompensieren eines nicht funktionsfähigen Tintenstrahls in einem Tintenstrahldrucker, der gedruckte Bilder mit einer Vielzahl von Tropfengrößen, die entwickelt wurden, bildet. Das Verfahren umfasst Identifizieren von zumindest einem benachbarten Pixel in einem Bereich von halbtongerasterten Mehrbit-Bilddaten um ein Pixel herum, dass dem nicht funktionsfähigen Tintenstrahl entspricht, und Modifizieren des zumindest einen benachbarten Pixels, um einem Tintenstrahl, der zu dem nicht funktionsfähigen Tintenstrahl benachbart ist, zu ermöglichen, während des Druckens einen Tintentropfen auszustoßen, um für den nicht funktionierenden Tintenstrahl zu kompensieren.

METHOD FOR ACCURATELY CONTROLLING THE VOLUME OF INK DROPLETS EMITTED FROM A PRINT HEAD

잉크(18)가 채워진 펌프(10)를 포함하는 프린트 헤드(1)의 프린팅 동작을 제어하기 위한 방법과, 잉크(18)에 작용하는 작동 펄스를 생성하기 위한 액츄에이터(16)는, 펌프(10)의 특성 주파수를 결정하는 단계를 포함한다. 펌프(10)의 특성 주파수는 펌프의 결합 구조에 직접 관련되기 때문에, 특성 주파수는 펌프(10)의 상태와 펌프(10)에 의해 방출되는 잉크 소적의 용량의 지표로서 사용될 수 있다. 특성 주파수의 작은 변화가 검출되는 경우에, 작동 펄스는 잉크 소적의 용량에 관한 필요 조건을 충족시키기 위해 조정된다. 특성 주파수의 비교적 큰 변화가 검출되는 경우에, 관계된 펌프(10)의 프린팅 동작은 중지되고, 또 다른 펌프(10)에 의해 그 작업이 이어질 수 있다. The method for controlling the printing operation of the print head 1 including the pump 10 filled with the ink 18 and the actuator 16 for generating the operating pulse acting on the ink 18 include the pump 10 Determining a characteristic frequency). Since the characteristic frequency of the pump 10 is directly related to the coupling structure of the pump, the characteristic frequency can be used as an indicator of the state of the pump 10 and the capacity of the ink droplets discharged by the pump 10. In the case where a small change in the characteristic frequency is detected, the operation pulse is adjusted to meet the requirements regarding the capacity of the ink droplets. If a relatively large change in characteristic frequency is detected, the printing operation of the pump 10 concerned is stopped and the operation can be continued by another pump 10.

Methods and systems for inkjet drop positioning

Methods and apparatus for inkjet inkjet drop positioning are provided. A first method includes determining an intended deposition location of an ink drop on a substrate, depositing the ink drop on the substrate using an inkjet printing system, detecting a deposited location of the deposited ink drop on the substrate, comparing the deposited location to the intended location, determining a difference between the deposited location and the intended location, and compensating for the difference between the deposited location and the intended location by adjusting a parameter of an inkjet printing system. Numerous other aspects are provided.

Imaging apparatus and method for reducing banding

A method for reducing horizontal banding in a printed image printed with an inkjet print engine includes printing on a print media sheet a first test patch with a first inkjet printhead being moved by the printhead carrier in a first print direction; printing on a print media sheet a second test patch with the first inkjet printhead being moved by the printhead carrier in a second print direction; determining a first characteristic of the first test patch; determining a second characteristic of the second test patch; comparing the first characteristic of the first test patch with the second characteristic of the second test patch; and selecting, based on the comparing, an initial print direction of the first inkjet printhead for a first printing pass that reduces horizontal banding in generating the printed image.

System for detecting inoperative inkjets in printheads ejecting clear ink using thermal substrates

An apparatus detects inoperative inkjets during printing. The apparatus operates the printhead or printheads in the printer to form test pattern on a thermal substrate. The heat of the materials used to form the test pattern change the optical density of the areas where the materials land. The area where the test pattern is formed is imaged and the image data are analyzed to identify inoperative inkjets.

Printing apparatus and printing method

A printing apparatus includes a reaction liquid application portion that applies dots of reaction liquid onto a recording medium by applying the reaction liquid to pixels in a pixel array in which rasters in which a plurality of pixels are lined up in a first direction are lined up in a second direction which is orthogonal to the first direction and an ink application portion that applies ink dots to the recording medium by applying ink which includes a color material that is coagulated using an action of the reaction liquid to the pixels of the pixel array, in which the reaction liquid application portion applies the reaction liquid dots by being separated by one pixel or more in the first direction and the second direction.

METHOD FOR MEASURING AMOUNT OF EJECTED INK AND INK EJECTION AMOUNT MEASUREMENT SYSTEM

PROBLEM TO BE SOLVED: To precisely measure an amount of ejected ink even when a scanner or CCD camera having a low resolution is used in an inexpensive system. SOLUTION: This method for measuring an amount of ejected ink of an inkjet recording head comprises a relationship table forming process of forming a relationship table indicating a relationship of a value of a drive voltage, the number of pixels and an amount of ejected ink, a drive voltage sweep process of varying the value of the drive voltage from a first drive voltage measurement value which is the value of the drive voltage at the time when the number of pixels measured in a pixel number measurement process is a first pixel number to a second drive voltage measurement value which is the value of the drive voltage on a boundary time point while the number of pixels measured in the pixel number measurement process is changed from the first pixel number to the second pixel number, and an ink ejection amount computing process of ...

ADJUSTMENT OF INKJET PRINTER PERFORMANCE

PROBLEM TO BE SOLVED: To achieve a solid inkjet printer which can cope with a secular characteristic change of an ink droplet generating part. SOLUTION: In the method of adjusting an ink droplet size, an average size of ejected ink droplets is obtained on the basis of the number of the ink droplets ejected from the printer nozzles within a predetermined time and an amount of ink which passes a predetermined point in the ink stick feeding system within the same time. When the obtained average size does not agree with a predetermined ink droplet size condition, a nozzle activation signal is corrected to change the ink droplet size. The amount of passing ink is detected by counting the number of ink sticks 30 or its virtual pieces which pass the predetermined point by a mechanical arm type or thermistor type counting mechanism. For example, a part to be detected 150 is formed at an external surface of the ink stick 30. A temperature change brought about at a melting plate 32D by a difference ...

Imaging device and method for reducing streaks

Accurately controlling the volume of ink droplets emitted from a print head

DUAL AND SINGLE DROP WEIGHT PRINTING

In an example implementation, a method of dual and single drop weight printing includes operating a printing system in a hybrid drop weight print mode to enable ejecting black ink from high drop weight nozzles and low drop weight nozzles, and ejecting color ink from high drop weight nozzles but not from low drop weight nozzles.

DROPLET EJECTION METHOD, DROPLET EJECTION PROGRAM, AND DROPLET EJECTION APPARATUS

A droplet ejection method includes: changing the drive condition in at least one of multiple ejections so as to correct the difference between a predetermined liquid amount and the total ejection amount of the liquid ejected in the form of a droplet by driving the nozzle under a preset drive condition; and driving at least one of the nozzles under the new drive condition to redetermine the total ejection amount of liquid of when performing multiple ejections. 1. A droplet ejection method in which an ejection head having a plurality of nozzles , and an ejection target are disposed face to face , and moved relative to each other for scanning , and in which a liquid is ejected multiple times in the form of a droplet through at least one of the plurality of nozzles to a placement region provided on the ejection target ,the method comprising:step A driving the at least one nozzle under a preset drive condition, and determining the total ejection amount of the liquid of when performing the multiple ejections;step B of determining the difference between the total ejection amount, and a predetermined amount of the liquid to be placed in the placement region;step C of changing the drive condition for at least one of the multiple ejections so as to correct the difference between the predetermined amount of the liquid and the total ejection amount; andstep D of driving the at least one nozzle under the drive condition changed in the step C, and redetermining the total ejection amount of the liquid of when performing the multiple ejections.2. The droplet ejection method according to claim 1 , comprising step E of repeating the steps C claim 1 , D claim 1 , and B in this order until the difference between the predetermined amount of the liquid and the total ejection amount becomes smaller than a correction resolution for the correction of droplet ejection amount by a change of the drive condition.3. The droplet ejection method according to claim 1 ,wherein the method sets a ...

Method for manufacturing printing device, printing device, and printing method

The invention provides method for manufacturing printing device, a printing device, and a printing method. The method for manufacturing a printing device, wherein the printing device uses ink including pigment ink and dye ink to form a printed image on a print medium, and discharges an ink quantity according to a voltage value of a drive voltage to form ink dots on the print medium. In this printing device, the voltage value of the drive voltage for creating ink dots is corrected.

PATTERNING SYSTEM AND CONTROLLING METHOD THEREOF

The present invention relates to a patterning system and a controlling method thereof capable of performing a patterning process by continuously discharging ink, comprising: a stage on which a substrate is placed and the substrate is moved in three axial directions; a conductive ink discharge apparatus provided to discharge conductive ink to the substrate; a power supply apparatus for applying a voltage to a discharge nozzle of the conductive ink discharge apparatus to charge the conductive ink and applying the voltage opposite to the discharge nozzle to the stage; a discharge monitoring apparatus for measuring a size of the conductive ink discharged from the discharge nozzle; and a control unit for receiving data from the discharge monitoring apparatus and controlling the power supply apparatus to discharge the conductive ink to the predetermined size. Along with the configuration, the present invention can obtain an effect which patterning operation can be performed by continuously discharging ...

Ink level gauging in inkjet printing

The gauging method generally follows a drop count approach to ink level gauging while making more precise the relationship between the expelled-drop count and the weight of ink actually expelled, thereby to provide more accurate ink level gauging. The printhead temperature is monitored as each swath of an image is printed. Moreover, temperature variations that occur within each swath are noted so that the corresponding intra-swath variations in drop weight are factored into the calculation of a net ink drop weight that more closely approximates the drop weight actually ejected. The method also factors in the effect that printing frequency has on drop weight.

PRINTING APPARATUS, PRINTING METHOD, AND MEDIUM

In a printing apparatus including a circulation system circulating a liquid, a volatile component included in the liquid evaporates from an ejection opening and thus characteristics of the liquid involving with concentration or viscosity change. The invention provides a printing apparatus that uses a liquid ejection head including an ejection opening ejecting a liquid, a print element generating energy for ejecting a liquid, and a pressure chamber having the print element provided therein, the printing apparatus including: a circulator configured to circulate the liquid so that the liquid passes through the pressure chamber; and a concentration adjustment unit configured to adjust a concentration of a liquid inside a liquid circulation system by discharging the liquid from the inside of the liquid circulation system and replenishing the liquid into the liquid circulation system from the outside of the liquid circulation system in response to the amount of the discharged liquid. 1. A printing apparatus that uses a liquid ejection head including an ejection opening ejecting a liquid , a print element generating energy for ejecting a liquid , and a pressure chamber having the print element provided therein , the printing apparatus comprising:a circulator configured to circulate the liquid so that the liquid passes through the pressure chamber; anda concentration adjustment unit configured to adjust a concentration of a liquid inside a liquid circulation system by discharging the liquid from the inside of the liquid circulation system and replenishing the liquid into the liquid circulation system from the outside of the liquid circulation system in response to the amount of the discharged liquid.2. The printing apparatus according to claim 1 ,wherein the concentration adjustment unit includes a concentration derivation unit configured to derive the concentration of the liquid inside the liquid circulation system.3. The printing apparatus according to claim 2 ,wherein ...

Methods and systems for inkjet drop positioning

Methods and apparatus for inkjet inkjet drop positioning are provided. A first method includes determining an intended deposition location of an ink drop on a substrate, depositing the ink drop on the substrate using an inkjet printing system, detecting a deposited location of the deposited ink drop on the substrate, comparing the deposited location to the intended location, determining a difference between the deposited location and the intended location, and compensating for the difference between the deposited location and the intended location by adjusting a parameter of an inkjet printing system. Numerous other aspects are provided.

Method of dispensing liquid

A liquid dispensing device (10) having a drop ejection device (12) including an orifice (18) adapted for ejecting drops (20) therefrom above a particular turn-on-energy, a turn-on-energy detection device (28) positioned to receive turn-on-energy information from said ejected drops as a function of energy applied to the drop ejection device, and a controller (40) that receives the turn-on-energy information and conducts a mathematical operation on the turn-on-energy information to determine a drop volume of the drops ejected.

Printing device and printing method

A printing device includes a discharge control unit configured to, with a first movement of a printing head, among a one end side nozzle group using nozzles of one end side of a nozzle row, an other end side nozzle group using nozzles of an other end side of the nozzle row, and a center nozzle group using nozzles of the nozzle row that do not correspond to the one end side nozzle group and the other end side nozzle group, discharge ink on a designated area on a print medium from the nozzles included in the center nozzle group and the other end side nozzle group, and with a second movement which is the movement of the printing head the next time after the first movement, discharge the ink on the designated area from the nozzles included in the center nozzle group and the one end side nozzle group.

FLUID EJECTION HEAD

A fluid ejection head (38) for a digital dispense device (20) is provided. The fluid ejection head (38) comprises a linear array (42A-42D) of fluid ejectors thereon, wherein the fluid ejectors are grouped by primitives (P1-P4) from a first end of the linear array to a second end of the linear array, wherein the linear array (42A-42D) of fluid ejectors on the fluid ejection head are oriented parallel to a direction of travel of the fluid ejection head in the digital dispense device. The linear array of fluid ejectors spans more than one well (16) of a micro-well plate (18) of the digital dispense device (20), and has a span greater than a target area (22) into which the fluid ejection head (3 8) ejects one or more fluids.

Printing apparatus and printing method

Liquid jet head, liquid jet recording device, and liquid jet head drive method

FLUIDIC DIE WITH DROP WEIGHT SIGNALS

A fluidic die includes an array of nozzles, each nozzle to eject a fluid drop in response to a corresponding actuation signal having an actuation value. Nozzle select logic provides for each nozzle a nozzle select signal having a select value or a non-select value. Actuation logic provides the respective actuation signal for each nozzle, the actuation logic to receive one or more drop weight signals, and for each nozzle select signal having the select value, to provide an actuation signal having an actuation value to the corresponding nozzle and/or to one or more neighboring nozzles based on a state of the one or more drop weight signals.

METHOD FOR SETTING UP DRIVE SIGNAL

A method for setting up a condition for a drive signal in a liquid ejection head that includes a plurality of linearly-arranged nozzles and driving elements provided for each of the nozzles, includes: calculating an average value or a median value of ejection rates for each nozzle relating to a supply of the drive signal under a plurality of conditions; classifying the plurality of nozzles into a plurality of groups based on the average value or the median value of the ejection rates; calculating a proper condition for the drive signal corresponding to each group based on a statistical value of the ejection rate relating to the group; and selecting one proper condition among proper conditions corresponding to the groups so as to set the selected proper condition for each nozzle.

Ink model generation mechanism

A printing system is disclosed. The printing system includes at least one physical memory device to store drop size logic and one or more processors coupled with the at least one physical memory device to execute the drop size logic to generate drop size data associated with a printing system based on ink deposition data for a print medium and ink drop count data.

Printing device and printing method for discharging ink from nozzle row including nozzle groups

A printing device includes a printing head and a control unit. The printing head has a nozzle row with a one end side nozzle group of nozzles of one end side of the nozzle row, an other end side nozzle group of nozzles of an other end side of the nozzle row, and a center nozzle group of nozzles of the nozzle row, which does not correspond to the one and other end side nozzle groups. The control unit is configured to discharge the ink on a designated area on a print medium from the nozzles included in the center nozzle group and the other end side nozzle group with a first movement of the printing head and discharge the ink on the designated area from the nozzles included in the center nozzle group and the one end side nozzle group with a second movement next to the first movement.

INK JETTING METHOD

IMAGE RECORDING APPARATUS, IMAGE RECORDING METHOD, AND RECORDING MEDIUM

An image recording apparatus includes a recording head including a plurality of nozzles from which ink is ejected, a memory, and one or more hardware processors coupled to the recording head and the memory. The one or more hardware processors are configured to: determine, for each of the plurality of nozzles, whether a position of the corresponding nozzle is a position to eject ink; determine whether a successive ejection operation is necessary for a nozzle out of the plurality of nozzles, whose position is determined as the position to eject ink; and cause ink to be successively ejected at the position to eject ink at a predetermined successive ejection frequency from the nozzle that is determined to have the necessity of the successive ejection operation.

Apparatus and method for detecting ink-discharge amount for controlling printer maintenance

An apparatus detecting an amount of ink discharged by a printer, the printer having a plurality of heaters and corresponding nozzles and performing printing by applying pulses to the heaters to heat the heaters and discharge ink through the corresponding nozzles, the apparatus including a detector connected to the heaters that detects a state change of the heaters and output a state change signal; and an ink discharge amount calculator that calculates an amount of discharged ink corresponding to the state change output signal from the detector.

METHOD OF INKJET PRINTING AND INKJET PRINTING APPARATUS

본 발명에 따른 잉크젯 인쇄 방법은, 제어 값과 이산 잉크 양이 매핑되어 특정 제어 값이 입력되면 그에 매핑된 이산 잉크의 양이 토출되도록 제어되는 복수의 노즐들을 이용한 것으로, 복수의 노즐들에 대하여 특정 이산 잉크 양에 매핑된 제어 값을 입력하여 토출 잉크 양을 측정함에 따라 복수의 노즐들의 토출 성능을 결정하는 단계, 인쇄 해상도(dpi)에 기초하여 결정된 적어도 둘 이상의 행(row) 및 열(column)로 구성된 복수의 도트들(dots)을 포함하는 윈도우에 대해 복수 도트들에 대해 기준 이산 잉크의 양이 토출되는 경우에 해당하는 목표 인쇄 잉크 양을 산출하는 단계, 및 윈도우 내에 분사되는 잉크 도트들의 토출 잉크 양의 합이 목표 인쇄 잉크 양을 유지하도록, 복수의 노즐들에 대하여 측정된 토출 잉크의 양에 기초하여 복수의 노즐들에 대한 제어 값을 결정하는 단계를 포함한다. The inkjet printing method according to the present invention uses a plurality of nozzles in which a control value and a discrete ink amount are mapped and the amount of discrete ink mapped thereto is discharged when a specific control value is input. Determining ejection performance of a plurality of nozzles by measuring ejection ink quantity by inputting a control value mapped to the discrete ink quantity, at least two or more rows and columns determined based on printing resolution (dpi) Calculating a target amount of printing ink corresponding to a case in which the amount of reference discrete ink is discharged for a plurality of dots for a window including a plurality of dots composed of, and discharge of ink dots sprayed into the window And determining a control value for the plurality of nozzles based on the amount of discharged ink measured for the plurality of nozzles so that the sum of the ink amounts maintains the target printing ink amount.

IMAGE RECORDING APPARATUS

The image recording apparatus has a head, a tank, a case that receives a cartridge, and a controller. When the cartridge is installed in the case of the image recording apparatus, the liquid in the cartridge flows to the tank by a difference between a liquid level in the cartridge and a liquid level in the tank. The controller controls a display to display a first notification indicating an ink cartridge based on receiving a first signal output from a sensor when a liquid level in an ink chamber reached a specific position. The controller, after receiving the first signal from the sensor, counts a count value indicating an amount of discharged liquid from the head. Further, the controller, in response to the count value reaching a first threshold, controls the display to display a second notification. 1. An image recording apparatus comprising: a first liquid chamber which stores a liquid;', 'a first flow path which includes one end communicating with the first liquid chamber a second flow path which includes one end communicating with the first liquid chamber and the other end communicating with the outside;, 'an installation case that receives a cartridge, the cartridge including a second liquid chamber;', 'a third flow path which includes one end communicating with the outside and the other end communicating with the second liquid chamber, at least one of the first flow path and the third flow path configured to communicate with the first chamber of the cartridge installed in the installation case and the second liquid chamber;', 'a fourth flow path which is below the third flow path in a vertical direction and communicates with the second liquid chamber;, 'a tank that includesa sensor;a head that communicates with the other end of the fourth flow path;a notification device; anda controller, receive a first signal from the sensor;', 'receive a discharging instruction to discharge the liquid via the head;', 'count a count value indicating an amount of liquid ...

IMAGE RECORDING APPARATUS, METHOD FOR IMAGE RECORDING, AND COMPUTER-READABLE STORAGE MEDIUM

An image recording apparatus, having a discharging head, a fan, and a controller, is provided. The discharging head includes a discharging surface and a plurality of nozzles arranged along a sub-scanning direction, which intersects orthogonally with a main scanning direction. The discharging head is configured to move in the main scanning direction. The fan is configured to generate an airflow for collecting mist of ink discharged through the nozzles. The controller is configured to obtain a droplet size of the ink to be discharged through the nozzles from one of a print job and a printing mode set in advance, obtain a distance between the discharging surface and a printable medium, and control a rotation speed of the fan based on the droplet size and the distance.

Device for printing droplet or ink on substrate or paper

Provided is a device (100) for printing a droplet onto a substrate (30). The device includes (100): a droplet generating member that is needle-shaped (20) and comprises a receiving portion that is disposed vertically and receives a solution (22), and a discharge hole (23) connected to the receiving portion and formed on the bottom of the receiving portion so that the solution can be discharged from the receiving portion; a substrate (30) that is disposed below the droplet generating member, and includes a target portion to which the droplet discharged (10a) from the discharge hole (23) of the droplet generating member (20) is dropped and attached; a voltage applier (50) applying a voltage to the droplet (10a) so that the droplet can be dropped onto the target portion of the substrate; a volume measuring unit measuring the volume of the droplet; and a droplet control unit maintaining the volume of the droplet at a predetermined level based on the measured volume of the droplet (60,62,63,64,66 ...

Dispense modes for multi-mode capable device

A system and method for ejecting one or more fluids from a digital dispense device. The method includes selecting a) fixed target areas and total fluid volumes for the target areas of the substrate; b) a predetermined droplet volume for the target areas; c) calculating a required number of droplets for the target areas; d) determining a maximum number of droplets per pixel based on the target areas; e) calculating a number of droplets per pass of an ejection head over the target areas; f) modifying one or more dimension of the target areas to create modified target areas; g) selecting and centering the modified spot size target areas in the target areas; and h) depositing fluids in the modified target areas while scanning the ejection head over the modified target areas.

Ink jet printer performance adjustment

SYSTEM FOR DETECTING INOPERATIVE INKJETS IN PRINTHEADS EJECTING CLEAR INK USING THERMAL SUBSTRATES

An apparatus detects inoperative inkjets during printing. The apparatus operates the printhead or printheads in the printer to form test pattern on a thermal substrate. The heat of the materials used to form the test pattern increase the optical density of the areas where the materials land. The area where the test pattern is formed is imaged and the image data are analyzed to identify inoperative inkjets. 1. A printer comprising:a printhead configured with a plurality of inkjets to eject material;a supply of thermal substrate having a surface that is coated with a heat sensitive dye that increases in optical density in response to heat contained within the material ejected from the printhead onto the thermal substrate, the optical density increase occurring with reference to a known function of optical density per unit of heat energy input to the heat sensitive dye on the thermal substrate;an optical sensor configured to generate electrical signals corresponding to optical densities at a plurality of locations on the thermal substrate;an actuator operatively connected to the optical sensor to move the optical sensor to a position opposite the thermal substrate onto which material has been ejected; anda controller operatively connected to the actuator, the optical sensor, and the printhead, the controller being configured to operate the printhead to eject a predetermined number of material drops from each inkjet onto the surface of the thermal substrate having the thermal sensitive dye to enable the predetermined number of material drops to form a test dot for each inkjet that ejected material onto the thermal substrate and increase the optical density at each location in the plurality of locations on the thermal substrate at which each test dot was formed, to operate the actuator to move the optical sensor to a position opposite the thermal substrate, and to identify inoperative inkjets in the printhead with reference to the data received from the optical sensor ...

Calibration method and calibration device for volume of ink droplet, printing apparatus

The present disclosure provides a calibration method and a calibration device for a volume of an ink droplet and a printing apparatus including the calibration device. The calibration method for a volume of an ink droplet comprises: calculating a first volume of a single ink droplet based on a mass and a density of an ink droplet; calibrating a measurement parameter used in an optical measurement approach based on the first volume; and acquiring a second volume of a single ink droplet using the optical measurement approach based on the calibrated measurement parameter.

Apparatus for dispensing droplet and method for dispensing droplet

An apparatus for dispensing droplet may include a droplet discharging member, a stage and a control member. The droplet discharging member may include a plurality of nozzles arranged in a first direction by a constant interval. The stage may receive a substrate including a plurality of regions for forming a plurality of pixels of a same size disposed in the first direction and a second direction substantially perpendicular to the first direction. The control member may control the droplet discharging member such that amounts of droplets may be substantially identical in the regions of the substrate for the pixels if the numbers of the nozzles of the droplet discharging member with respect to sides of the regions of the substrate for the pixels are different in the first direction. The control member may identify patterns of discharged droplets in the regions of the substrate for the pixels and adjusts the amounts of the droplets form the nozzles of the droplet discharging member by controlling ...

ELEMENT SUBSTRATE, PRINTHEAD, AND PRINTING APPARATUS

Imaging apparatus and method for reducing banding

An imaging apparatus includes a print engine having a printhead that generates ink drops, and a printhead carrier that carries the printhead in a first direction and in a second direction. A controller determines an initial print direction based on ink drop information obtained by printing patches in the first direction and in the second direction. The controller is operatively coupled to the print engine to print an image based on the initial print direction.

Authentication value for a fluid ejection device

A fluid ejection device includes a plurality of analog devices, and a storage element storing an authentication value based on electrical characteristics of a subset of the plurality of analog devices.

IMAGE PROCESSING APPARATUS, IMAGE PROCESSING METHOD AND STORAGE MEDIUM

The image processing apparatus of the present invention includes: an image data acquisition unit configured to acquire image data; a generation unit configured to generate an ejection pattern of ink droplets from the image data, which are ejected for forming dots from a plurality of nozzles of an image forming apparatus; a characteristic acquisition unit configured to acquire an ejection characteristic of ink droplets of the image forming apparatus; and a pattern change processing unit configured to change the ejection pattern based on the ejection characteristic and the ejection pattern, and the pattern change processing unit repeatedly performs, in a case where a gap occurs between dots that should be formed so as to contact each other by the image forming apparatus, the ejection pattern change until the gap is eliminated. 1. An image processing apparatus comprising:an image data acquisition unit configured to acquire image data;a generation unit configured to generate an ejection pattern of ink droplets from the image data, which are ejected for forming dots from a plurality of nozzles of an image forming apparatus;a characteristic acquisition unit configured to acquire an ejection characteristic of ink droplets of the image forming apparatus; anda pattern change processing unit configured to change the ejection pattern based on the ejection characteristic and the ejection pattern, whereinthe pattern change processing unit repeatedly performs, in a case where a gap occurs between dots that should be formed so as to contact each other by the image forming apparatus, the ejection pattern change until the gap is eliminated.2. The image processing apparatus according to claim 1 , wherein has a specification unit configured to specify a dot forming the gap in the ejection pattern; and', 'changes a size of the specified dot forming the gap., 'the pattern change processing unit3. The image processing apparatus according to claim 2 , wherein further has a determination ...

Liquid discharge apparatus, processing method determining apparatus, processing method determining method, and recording medium

A liquid discharge apparatus includes a liquid discharge head, a conveyance device, an imaging device, and processing circuitry. The liquid discharge head is configured to discharge liquid to an object to form a liquid application surface. The conveyance device is configured to convey the object. The imaging device is configured to capture a plurality of positions of the object on which the liquid application surface is formed. The processing circuitry is configured to control discharge of the liquid by the liquid discharge head according to a plurality of pieces of different pattern data for forming the liquid application surface, control conveyance of the object by the conveyance device to form the liquid application surface corresponding to the pattern data, and determine a processing method of forming the liquid application surface according to captured images of the plurality of positions captured by the imaging device.

Image recording apparatus, method for image recording, and computer-readable storage medium

An image recording apparatus, having a discharging head, a fan, and a controller, is provided. The discharging head includes a discharging surface and a plurality of nozzles arranged along a sub-scanning direction, which intersects orthogonally with a main scanning direction. The discharging head is configured to move in the main scanning direction. The fan is configured to generate an airflow for collecting mist of ink discharged through the nozzles. The controller is configured to obtain a droplet size of the ink to be discharged through the nozzles from one of a print job and a printing mode set in advance, obtain a distance between the discharging surface and a printable medium, and control a rotation speed of the fan based on the droplet size and the distance.

Printing device and printing method

METHOD FOR ACCURATELY CONTROLLING THE VOLUME OF INK DROPLETS EMITTED FROM A PRINT HEAD

A method for controlling printing actions of a print head (1) comprising pumps (10) filled with ink (18), and actuators (16) for generating actuation pulses acting on the ink (18), comprises the step of determining a characteristic frequency of the pumps (10). As the characteristic frequency of the pumps (10) is directly related to the geometry of the pumps (10), the characteristic frequency can be used as an indicator of the state of the pumps (10) and the volume of the ink droplets emitted by the pumps (10). In case a slight change of the characteristic frequency is detected, the actuation pulse is adjusted in order to still meet the requirements regarding the volume of the ink droplets. In case a relatively large change of the characteristic frequency is detected, the printing action of the pump (10) concerned is stopped, and may be taken over by another pump (10).

Imaging apparatus and method for reducing banding

An imaging apparatus includes a print engine having a printhead that generates ink drops, and a printhead carrier that carries the printhead in a first direction and in a second direction opposite the first direction. A controller determines an initial print direction based on ink drop information obtained by printing patches in the first direction and in the second direction, wherein the ink drop information includes a respective chromatic value of each of the patches. The controller is operatively coupled to the print engine to print an image based on the initial print direction.

インクジェットデバイスから射出される液滴の定量化及び分析

Verfahren zum Drucken eines Bildes mit flüssiger Tinte

Die Erfindung betrifft ein Verfahren zum Drucken eines Bildes mit flüssiger Tinte, wobei die Tinte mittels einer Pumpe (7) zu einem Druckkopf (4) gepumpt wird und Zeilen (13, 14) des Bildes mittels des Druckkopfs auf einen bewegten Bedruckstoff (5) gedruckt werden, und zeichnet sich dadurch aus, dass für mehrere einzelne Zeilen (13, 14) oder für mehrere gruppierte Zeilen (13, 14) des Bildes (9, 10) jeweils ein zum Tintenbedarf für die Zeilen korrelierender Wert (A, 22) berechnet wird und die Pumpe (7) wird mit einem auf den berechneten Werten basierenden Vorsteuersignal vorgesteuert wird. Die Erfindung ermöglicht in vorteilhafter Weise, die Druckqualität weiter zu erhöhen.

LIQUID DISCHARGE APPARATUS

A liquid discharge apparatus includes a liquid discharge head and processing circuitry. The liquid discharge head is configured to discharge, to a foamable medium, liquid having a function of suppressing foaming of the medium to form irregularities. The processing circuitry is configured to hold condition information indicating a content defined by each of a plurality of conditions related to image formation at a time when the liquid forms a predetermined pattern image on the medium; and generate and output, for each condition of the plurality of conditions, an evaluation medium on which irregularities corresponding to the predetermined pattern image formed according to the condition are formed. 1. A liquid discharge apparatus comprising:a liquid discharge head configured to discharge, to a foamable medium, liquid having a function of suppressing foaming of the medium to form irregularities; and hold condition information indicating a content defined by each of a plurality of conditions related to image formation at a time when the liquid forms a predetermined pattern image on the medium; and', 'generate and output, for each condition of the plurality of conditions, an evaluation medium on which irregularities corresponding to the predetermined pattern image formed according to the condition are formed., 'processing circuitry configured to2. The liquid discharge apparatus according to claim 1 ,wherein the condition related to the image formation is a condition defined by information including information indicating an amount of adhesion of the liquid on the medium and information related to a shape of an outline of the pattern image formed on the medium by the liquid.3. The liquid discharge apparatus according to claim 2 ,wherein the pattern image includes a plurality of types of pattern images, andirregularities corresponding to the plurality of types of pattern images are formed on the evaluation medium for each of the conditions.4. The liquid discharge apparatus ...

PRINTING APPARATUS, PRINTING METHOD, AND MEDIUM

In a printing apparatus including a circulation system circulating a liquid, a volatile component included in the liquid evaporates from an ejection opening and thus characteristics of the liquid involving with concentration or viscosity change. The invention provides a printing apparatus that uses a liquid ejection head including an ejection opening ejecting a liquid, a print element generating energy for ejecting a liquid, and a pressure chamber having the print element provided therein, the printing apparatus including: a circulator configured to circulate the liquid so that the liquid passes through the pressure chamber; and a concentration adjustment unit configured to adjust a concentration of a liquid inside a liquid circulation system by discharging the liquid from the inside of the liquid circulation system and replenishing the liquid into the liquid circulation system from the outside of the liquid circulation system in response to the amount of the discharged liquid. 120.-. (canceled)21. A printing apparatus comprising:a liquid ejection head including an ejection opening ejecting a liquid, a print element generating energy for ejecting a liquid, and a pressure chamber having the print element provided therein;a main tank storing the liquid ejected from the liquid ejection head;a buffer tank communicating with the main tank and storing the liquid supplied from the main tank and the liquid ejected from the liquid ejection head;a circulation unit configured to circulate the liquid inside a circulation path including the buffer tank and the pressure chamber; anda concentration adjustment unit configured to predict a concentration of the liquid inside the circulation path on the basis of an amount of the liquid discharged from the ejection opening to the outside of the ejection opening and to discharge, on the basis of the predicted concentration, the liquid inside the circulation path to the outside of the circulation path and replenish the liquid inside the ...

INK MODEL GENERATION MECHANISM

A printing system is disclosed. The printing system includes at least one physical memory device to store drop size logic and one or more processors coupled with the at least one physical memory device to execute the drop size logic to generate drop size data associated with a printing system based on ink deposition data for a print medium and ink drop count data.

잉크젯 헤드를 이용한 인쇄 방법

... 잉크젯 헤드를 이용하는 인쇄 방법은 액적의 토출이 이루어지는 잉크젯 헤드를 이용한 인쇄 방법에 있어서, 테스트 기판에 테스트 인쇄 패턴이 인쇄되도록 상기 잉크젯 헤드를 이용하여 액적을 토출시키는 단계; 상기 테스트 인쇄 패턴에 대한 분석이 이루어지도록 상기 액적이 원하는 위치에 원하는 크기로 토출되었는가를 확인하는 단계; 및 상기 테스트 인쇄 패턴의 분석을 통하여 실제 인쇄 패턴을 획득할 수 있도록 상기 액적이 토출되는 위치, 상기 액적 사이의 간격, 및 상기 액적의 토출량을 조정하는 단계를 포함할 수 있다.

APPARATUS AND METHOD FOR DETECTING AMOUNT OF EXHAUST INK FOR CONTROLLING MAINTENANCE OF PRINTER

PURPOSE: An apparatus and method for detecting the amount of exhaust ink are provided to properly control a maintenance operation of a printer by detecting a real amount of ink exhausted. CONSTITUTION: An apparatus for detecting an amount of exhaust ink includes a detector(310), a calculator(320) for calculating an amount of exhaust ink, and a controller(330). The detector(310) includes a sensor capable of detecting current applied to a nozzle heater(350) or voltage variation at both ends of the nozzle heater(350). The calculator(320) calculates the amount of ink exhausted through an ink nozzle based on a variation of the nozzle heater(350). The controller(330) controls a maintenance function of a printer based on the amount of ink calculated by the calculator(320). © KIPO 2004 ...

METHOD FOR ACCURATELY CONTROLLING THE VOLUME OF INK DROPLETS EMITTED FROM A PRINT HEAD

A method for controlling printing actions of a print head (1) comprising pumps (10) filled with ink (18), and actuators (16) for generating actuation pulses acting on the ink (18), comprises the step of determining a characteristic frequency of the pumps (10). As the characteristic frequency of the pumps (10) is directly related to the geometry of the pumps (10), the characteristic frequency can be used as an indicator of the state of the pumps (10) and the volume of the ink droplets emitted by the pumps (10). In case a slight change of the characteristic frequency is detected, the actuation pulse is adjusted in order to still meet the requirements regarding the volume of the ink droplets. In case a relatively large change of the characteristic frequency is detected, the printing action of the pump (10) concerned is stopped, and may be taken over by another pump (10). © KIPO & WIPO 2007 ...

Techniques for print ink droplet measurement and control to deposit fluids within precise tolerances

An ink printing process employs per-nozzle droplet volume measurement and processing software that plans droplet combinations to reach specific aggregate ink fills per target region, guaranteeing compliance with minimum and maximum ink fills set by specification. In various embodiments, different droplet combinations are produced through different printhead/substrate scan offsets, offsets between printheads, the use of different nozzle drive waveforms, and/or other techniques. These combinations can be based on repeated, rapid droplet measurements that develop understandings for each nozzle of means and spreads for expected droplet volume, velocity and trajectory, with combinations of droplets being planned based on these statistical parameters. Optionally, random fill variation can be introduced so as to mitigate Mura effects in a finished display device. The disclosed techniques have many possible applications. 1using a droplet measurement device to measure multiple droplets from each one of the nozzles of the print head, and to determine a statistical parameter for each one of the nozzles associated with a distribution of the droplets produced by the one of the nozzles; andusing a processor to generate printer control data, dependent on the statistical parameter for each one of the nozzles, to deposit the ink;wherein the printer control data is to control printing in a manner that utilizes combinations of droplets from different ones of the nozzles, the combinations respective to the target regions, the combinations selected dependent on the statistical parameters.. A method of producing a thin film in target regions of a substrate using an ink jet printer having a print head with nozzles, the nozzles to eject respective droplets of ink, the ink carrying a material that will form a permanent part of the thin film, the method comprising: This application is a continuation of U.S. Utility patent application Ser. No. 14/340,403, for “Techniques For Print Ink Droplet ...

METHOD OF DISPENSING LIQUID

A liquid dispensing device (10) having a drop ejection device (12) including an orifice (18) adapted for ejecting drops (20) therefrom above a particular turn-on- energy, a turn-on-energy detection device(28) positioned to receive turn-on-energy information from said ejected drops as a function of energy applied to the drop ejection device, and a controller (40) that receives the turn-on-energy information and conducts a mathematical operation on the turn-on-energy information to determine a drop volume of the drops ejected.

Ink jet printer performance adjustment

An ink jet printer includes an ink supply system and a printhead with nozzles for ejecting ink drops. The printer determines the average size of the ejected ink drops by comparing the number of ink drops ejected in a predetermined time with the quantity of ink delivered through the printers ink supply system during that time. If the determined average ink drop size does not match predetermined ink drop size criteria, the printer adjusts the activation signals for the ink jet nozzles to alter the ink drop size. A solid ink printer determines the quantity of ink delivered through the ink supply system by counting the number of whole or partial ink sticks that pass a predetermined point in the ink supply system. The counter detects a sensing element formed on an external surface of the ink stick. Exemplary detectors include a mechanical arm, or a thermistor to detect a change in the printer melt plate temperature due to a change in the cross sectional area of an ink stick being melted.

INKJET AEROSOL PARTICLE GENERATOR

The present invention relates to an inkjet aerosol particle generator and, more specifically, relates to an inkjet aerosol particle generator, wherein after a solution of a material to be generated is sprayed in the shape of a liquid droplet with an inkjet nozzle, the liquid droplet passes through a liquid droplet drying unit in which drying gas flows to evaporate the solution. Moreover, remaining particles are mutually bound to generate an aerosol particle aggregating body. COPYRIGHT KIPO 2017 ...

잉크젯 에어로졸 입자 생성 장치

... 제안기술은 잉크젯 에어로졸 입자 생성 장치에 관한 것으로, 더욱 상세하게는 생성하고자 하는 물질의 용액을 잉크젯 노즐을 이용하여 액적 형태로 분사시킨 뒤, 액적을 건조가스가 흐르는 액적 건조부를 거치게 하여 용액은 증발시키고 남은 입자는 서로 뭉쳐져 에어로졸 입자 응집체를 생성하는 잉크젯 에어로졸 입자 생성 장치에 관한 발명이다.

AUTHENTICATION VALUE FOR PRINT HEAD DIE BASED ON ANALOG DEVICE ELECTRICAL CHARACTERISTICS

A print head die includes a storage element. The print head die includes a plurality of analog devices. The storage element is to store an authentication value. The authentication value is generated based on comparisons of the measured electrical characteristics of at least some of the analog devices. 1. A fluid ejection device , comprising:a printhead die including a plurality of nominally equal analog devices; anda storage element storing an authentication value, wherein the authentication value is generated based on comparisons of the measured electrical characteristics of at least some of the analog devices.2. The fluid ejection device of wherein the electrical characteristics of at least some of the analog devices are measurable by a fluid ejection system claim 1 , and wherein the authentication value is usable by the fluid ejection system to verify an authenticity of the fluid ejection device based on measured values of the at least some of the analog devices.3. The fluid ejection device of further comprising an electrical connection to connect to a host device claim 1 , the connection being connected to the storage element to communicate the authenticity value to a host device and to the analog devices to facilitate measuring of the electrical characteristics by a host device.4. The fluid ejection device of further comprising an analog-to-digital converter coupled between the electrical connection and the analog devices to facilitate measuring the electrical characteristics claim 3 , wherein the analog-to-digital converter and the storage device are integral components of the die.5. The fluid ejection device of wherein the authentication value is generated based on comparisons of the measured electrical characteristics of pairs of the at least some of the analog devices.6. The fluid ejection device of wherein the authentication value includes a plurality of bits claim 1 , each bit to indicate a result of a comparison of the measured electrical characteristics ...

Drop volume compensation for ink supply variation

The present invention relates to a method that enables image quality of a printed image to be maintained by reducing unintended variations in drop volume, through the adjustment of ink drop ejecting conditions depending on the amount of ink remaining in an ink tank chamber or reservoir, and/or the ink demand for printing an image. The method of printing of the present invention comprises: providing a printhead in fluid communication with an ink chamber or reservoir; detecting at least one parameter related to an amount of negative pressure provided to the printhead; and adjusting an ink drop ejecting condition of the printhead as a function of the parameter so that an amount of variation in size of ejected ink drop is reduced.

PRINTING DEVICE AND PRINTING METHOD

A printing device, which prints an image on a recording medium using a printing head which has a nozzle row, where a plurality of nozzles are aligned in a first direction, for each color of ink, comprising: a printing control section which executes a plurality of cycles of a dot forming action, where dots are formed on the recording medium along a second direction which intersects with the first direction by discharging ink from the nozzles while the printing head is moved in the second direction, and a transport action, where the recording medium is relatively transported in the first direction with regard to the printing head after completion of the dot forming action. 1. A printing device , which prints an image on a recording medium using a printing head which has a nozzle row , where a plurality of nozzles are aligned in a first direction , for each color of ink , comprising:a printing control section which executes a plurality of cycles of a dot forming action, where dots are formed on the recording medium along a second direction which intersects with the first direction by discharging ink from the nozzles while the printing head is moved in the second direction, and a transport action, where the recording medium is relatively transported in the first direction with regard to the printing head after completion of the dot forming action,{'sup': th', 'th', 'th, 'wherein the printing control section is provided with a front position calculating section which calculates a front position of a dot region, which is able to be formed by the dot forming action in an N+1(where N is an integer of one or more) cycle, for each nozzle row by a predetermined transport amount being added to the position of the dot region which is formed using the dot forming action of an Ncycle, a skipping amount calculating section which calculates the size of blanking regions for each color from each front position which has been calculated to a portion where a dot row of a color which ...

Automated high performance waveform design by evolutionary algorithm

A method can include receiving an initial waveform and generating, testing, and evaluating the performance of an initial child set of waveforms based on an initial parent set of waveforms from the initial waveform. The method can also include determining whether a termination condition has been met based on the evaluating and, if so, providing an optimized waveform. If the termination condition has not been met, the method can also include generating subsequent child sets of waveforms based on the previous child set(s).

REAL TIME DROP INFORMATION MEASUREMENT UNIT AND REAL TIME DISCHARGING DROPLET COMPENSATING APPARATUS AND METHOD USING THE SAME

The present invention relates to real time discharging droplet compensating apparatus and method capable of compensating a discharging degree in real time by feeding-back drop information. To this end, the present invention provides a real time discharging droplet compensating apparatus which is configured by including a discharge control unit controlling the driving of an inkjet head; and a drop measurement unit provided below a substrate to measure drop information of a droplet to be discharged on the substrate and feed-back the measured drop information to the drop measurement unit, wherein the discharge control unit compensates a nozzle waveform of discharging the droplet by using the drop information. Therefore, according to the present invention, the position, size, and volume information of the drop are measured at the same time to be fed-back to the inkjet head unit in real time, thereby acquiring drop information without movement of a separate head unit. 1. A drop measurement unit provided below a substrate to measure drop information of a droplet to be discharged on the substrate from an inkjet head , the drop measurement unit comprising:a sensor module in which a plurality of sensor are disposed, andthe drop measurement unit measures a drop position, a drop size, and a drop volume by using information measured by the sensor module.2. The drop measurement unit of claim 1 , wherein the drop measurement unit measures a drop size by using the number of sensors which detect the drop.3. The drop measurement unit of claim 1 , wherein the drop measurement unit includes pressure sensor modules in the form of a matrix andcalculates and maps a drop position, a drop size, and a drop volume by using node information of the matrix.4. The drop measurement unit of claim 1 , wherein the node information includes a coordinate of each node and a detected pressure value.5. The drop measurement unit of claim 1 , wherein the drop measurement unit includes at least one pair of ...

MEASURING PHYSICAL PARAMETERS

A method may include measuring at least one physical parameter of at least one component of a plurality of components of a first fluid ejection die; and calculating an operating energy value to be used to operate the first fluid ejection die based on the at least one physical parameter of the at least one component. 1. A method , comprising:measuring at least one physical parameter of at least one component of a plurality of components of a first fluid ejection die; andcalculating an operating energy value to be used to operate the first fluid ejection die based on the at least one physical parameter of the at least one component.2. The method of claim 1 , comprising storing the operating energy value on a data storage device associated with the first fluid ejection die.3. The method of claim 1 , comprising calculating a drop volume to be ejected from the first fluid ejection die based on measured physical parameters.4. The method of claim 1 , wherein measuring at least one physical parameter of at least one component of the first fluid ejection die is done prior to assembly of the plurality of components of the first fluid ejection die.5. The method of claim 1 , wherein the calculated operating energy value to be used to operate the first fluid ejection die is associated with a second fluid ejection die having a source of a component originating from materials used to manufacture the at least one component of the first fluid ejection die.6. The method of claim 1 , comprising claim 1 , with a look-up table claim 1 , determining an operating pulse claim 1 , a voltage claim 1 , and a pulse width used to operate the first fluid ejection die based on the calculated operating energy value.7. A computing device claim 1 , comprising:a processor, anda data storage device communicatively coupled to the processor; with a measurement module, receives input of measurements of at least one physical parameter of at least one component of a plurality of components of a first fluid ...

Apparatus for dispensing droplet and method for dispensing droplet

An apparatus for dispensing droplet may include a droplet discharging member, a stage and a control member. The droplet discharging member may include a plurality of nozzles arranged in a first direction by a constant interval. The stage may receive a substrate including a plurality of regions for forming a plurality of pixels of a same size disposed in the first direction and a second direction substantially perpendicular to the first direction. The control member may control the droplet discharging member such that amounts of droplets may be substantially identical in the regions of the substrate for the pixels if the numbers of the nozzles of the droplet discharging member with respect to sides of the regions of the substrate for the pixels are different in the first direction. The control member may identify patterns of discharged droplets in the regions of the substrate for the pixels and adjusts the amounts of the droplets form the nozzles of the droplet discharging member by controlling operation of each of nozzles of the droplet discharging member.

Data storage system and apparatus

A data storage system, having a data processor operable to convert digital data signals into ink dot patterns, and a data processor operable to receive the ink dot patterns and convert them into digital signals, the system having at least one print media receiving carrier or panel, a printing member operable to deposit ink dot patterns in a print medium on the carrier panel, and a print media reader operable to read the ink dot patterns and create data signals there from, and a method of storing and retrieving data. 1. A data storage system comprising a data processor operable to convert digital signals into ink dot patterns and operable to receive such ink dot patterns and convert them into digital signals;a printing assembly operable to create ink dot patterns, and a reader operable to read said ink dot patterns and create data signals therefrom.2. The data storage system as claimed in including a transmission for moving the printing assembly claim 1 , and a recording medium for receiving said ink dot patterns from said printing assembly.3. The data storage system as claimed in wherein said reader incorporates lights for illuminating said ink dot patterns.4. The data storage system as claimed in and including an eraser operable to remove said ink dot patterns.5. The data storage system as claimed in wherein said eraser comprises a head source for vaporizing said ink dot patterns.6. The data storage system as claimed in and further including a vacuum pump for removing said vaporized ink.7. A method of processing data in a computer system and for encrypting digital data into data symbols and recovering data from said symbols. Said method comprising; receiving digital data; encrypting said digital data as data symbols claim 5 , and claim 5 , storing said data in a storage area and retrieving said data from the storage area claim 5 , and converting said data from said encrypted data symbols into said digital data.8. The method as claimed in and including the step of ...

IMAGE FORMING APPARATUS, IMAGE PROCESSING DEVICE AND IMAGE FORMING METHOD

An image forming apparatus includes: an image forming unit that forms an image on a recording material by ejecting ink; and an image processing unit that, in a case where information of a bar code image is included in image information for forming an image by the image forming unit, carries out a process of making a drop size of the ink used for pixels constituting an edge portion in the bar code image smaller than a drop size of the ink used for pixels constituting a portion other than the edge portion. 1. An image forming apparatus comprising:an image forming unit that forms an image on a recording material by ejecting ink; andan image processing unit that, in a case where information of a bar code image is included in image information for forming the image by the image forming unit, carries out a process of making a drop size of the ink used for pixels constituting an edge portion in the bar code image smaller than a drop size of the ink used for pixels constituting a portion other than the edge portion, and that expands the pixels constituting the edge portion of two pixels or more from the edge portion.2. The image forming apparatus according to claim 1 , whereinthe image processing unit carries out the process in a case where the pixels constituting the edge portion extend in a direction intersecting a transport direction of the recording material, and does not carry out the process in a case where the pixels constituting the edge portion extend in any direction other than the direction intersecting the transport direction of the recording material.3. (canceled)4. (canceled)5. The image forming apparatus according to claim 1 , whereinthe image processing unit carries out a process of reducing a pixel value of each of the pixels constituting the edge portion.6. The image forming apparatus according to claim 2 , whereinthe image processing unit carries out a process of reducing a pixel value of each of the pixels constituting the edge portion.7. (canceled)8. ( ...

Liquid ejecting apparatus, flushing adjusting method, control program of liquid ejecting apparatus, and recording medium

A liquid ejecting apparatus performs ejection in which droplets are deposited onto a medium and flushing in which droplets are not deposited onto the medium. The apparatus includes a recording head configured to eject the droplets, a presentation unit configured to present at least one condition selected from a number of times of ejecting droplets in the one flushing, a weight per one of the droplets in the flushing, and a timing of the flushing to be changeable, and a flushing controller configured to control the recording head to perform the flushing based on the condition changed via the presentation unit.

PRINT CONTROL INSTRUCTIONS

In an example, a machine-readable medium stores instructions which when executed by a processor cause the processor to determine a difference between a measured printed output and an expected printed output. Based on the difference, a first control instruction for controlling a drop size wherein the drop size is variable, and a second control instruction for controlling a dot density of a variable dot density may be determined.

INKJET PRINTING APPARATUS AND VARIABLE-DENSITY CORRECTION METHOD

First, shading charts are printed on a surface of a recording medium. Then, a plurality of captured images is acquired for a region of the same density of the shading charts printed on the recording medium. At this time, the amounts of displacement in the position of the recording medium in the main scanning direction, which is the direction of arrangement of nozzles, are also detected. Then, one super-resolution image with a higher resolution than the captured images is generated on the basis of the captured images and the amounts of displacement in the position of the recording medium in the main scanning direction. Thereafter, a variable-density correction amount is calculated for each of the nozzles on the basis of the generated super-resolution image. 1. An inkjet printing apparatus for printing an image on a surface of a recording medium , comprising:a head having a plurality of nozzles arranged in a main scanning direction, said plurality of nozzles ejecting ink to a surface of a recording medium;a transport mechanism that transports a recording medium relative to said head in a sub-scanning direction orthogonal to said main scanning direction;an image capturing part that captures an image of a surface of a recording medium at an image capturing position located downstream of said head in said sub-scanning direction;a detector that detects an amount of displacement in position of a recording medium in said main scanning direction at said image capturing position; anda controller connected to said head, said transport mechanism, said image capturing part, and said detector,said controller including:a chart print instruction part that controls and causes said head and said transport mechanism to print a shading chart whose density changes in a stepwise fashion in said sub-scanning direction on a recording medium;an image acquisition part that controls and causes said image capturing part to acquire a plurality of captured images for a region of the same density ...

CONTROL DEVICE PERFORMING ERROR DIFFUSION PROCESS USING MODIFIED EVALUATED DENSITY VALUE

In an error diffusion process, a control device determines a dot value of a target pixel by using a gradation value of the target pixel, and an error value. The control device determines distribution error value by comparing a gradation dependent value with a first evaluated density value indicating a density of a first dot. The control device determines the distribution error value by using the first evaluated density value when the dot value of the target pixel indicates formation of the first dot and when the gradation dependent value is smaller than or equal to the first evaluated density value. The control device determines the distribution error value by using a modified evaluated density value greater than the first evaluated density value when the dot value indicates formation of the first dot and when the gradation dependent value is greater than the first evaluated density value. 1. A control device comprising a processor configured to perform:acquiring original image data representing an original image, the original image including a plurality of pixels, the original image data including a plurality of gradation values corresponding to respective ones of the plurality of pixels, each of the plurality of gradation values representing a density of a corresponding pixel;performing an error diffusion process to generate dot data including a plurality of dot values corresponding to respective ones of the plurality of pixels, each of the plurality of dot values indicating a dot formation state of a corresponding pixel; andgenerating print data including the dot data, the print data being processed by a print execution machine to reproduce the original image,wherein the performing includes:determining a dot value of a target pixel selected from among the plurality of pixels by using a gradation value of the target pixel, an error value, and a threshold value, wherein the error value is distributed to the target pixel from a processed pixel which has been ...

METHOD FOR PRINTING AN IMAGE USING LIQUID INK

A method for printing an image with improved printing quality using liquid ink includes using a pump to pump ink to a print head for printing rows of the image onto a moving printing substrate. A respective value correlated with the amount of ink required to print the rows is calculated for a plurality of individual rows or a plurality of grouped rows of the image. The pump receives a preemptive control signal based on the calculated values. 1. A method for printing an image using liquid ink , the method comprising the following steps:using a pump to pump the ink to a print head;using the print head to print rows of the image onto a moving printing substrate;calculating respective values correlated with an amount of ink required for the rows for a plurality of individual rows or for a plurality of grouped rows of the image; andpreemptively controlling the pump with a preemptive control signal based on the calculated values.2. The method according to claim 1 , which further comprises using a matrix corresponding to the image for the calculation claim 1 , including rows of entries of drop sizes in the matrix claim 1 , and calculating row totals.3. The method according to claim 2 , which further comprises weighting the drop sizes with associated predefined ink drop volumes.4. The method according to claim 1 , which further comprises calculating a delay between an instant of transmitting the preemptive control signal to the pump and an instant of transmitting a control signal to the print head.5. The method according to claim 4 , which further comprises calculating the delay as a function of a constant or variable printing substrate transport speed.6. The method according to claim 4 , which further comprises optimizing the delay by printing and analyzing a test element.7. The method according to claim 1 , which further comprises using the pump to create a liquid pressure in the ink.8. The method according to claim 1 , which further comprises grouping two claim 1 , three ...

PRINTER OPERATION FOR EJECTION OF PURGING DROPLETS OF A PRINTING FLUID

Operation of a printer for printing an image is described herein. It is determined whether ejection of imaging droplets of a print fluid via a set of nozzles for printing an outstanding image portion is sufficient for preventing clogging of the set of nozzles. Upon determining that ejection of imaging droplets for printing the outstanding image portion is sufficient for preventing clogging of the set of nozzles, printing is performed by ejecting only imaging droplets of the print fluid via the set of nozzles. Upon determining that ejection of imaging droplets for printing the outstanding image portion is not sufficient for preventing clogging of the set of nozzles, a servicing procedure is to be executed of to eject purging droplets of the print fluid via the set of nozzles. 1. A method of operating a printer for printing an image , the method comprising:printing over a print swath for reproducing a portion of the image, wherein if ejection of imaging droplets of a print fluid via a set of nozzles for printing an outstanding image portion is above a selected droplet number, the print swath is printed by ejecting only imaging droplets of the print fluid via the set of nozzles, andif ejection of imaging droplets of the print fluid for printing an outstanding image portion is below the selected droplet number, printing the print swath includes ejecting purging droplets of the print fluid via the set of nozzles.2. The method of claim 1 , wherein the outstanding image portion is an image portion corresponding to a subsequent print swath.3. The method of claim 1 , wherein the outstanding image portion is the image portion corresponding to one or more subsequent print swaths.4. The method of claim 1 , wherein the selected droplet number is selected taking into account the amount of imaging droplets of the print fluid to be ejected for printing the outstanding image portion.5. The method of claim 4 , wherein the selected droplet number is selected taking also into account ...

Calibration Method and Calibration Device for Volume of Ink Droplet, Printing Apparatus

The present disclosure provides a calibration method and a calibration device for a volume of an ink droplet and a printing apparatus including the calibration device. The calibration method for a volume of an ink droplet comprises: calculating a first volume of a single ink droplet based on a mass and a density of an ink droplet; calibrating a measurement parameter used in an optical measurement approach based on the first volume; and acquiring a second volume of a single ink droplet using the optical measurement approach based on the calibrated measurement parameter. 118-. (canceled)19. A calibration method for a volume of an ink droplet , comprising:calculating a first volume of a single ink droplet based on a mass and a density of an ink droplet;calibrating measurement parameters used in an optical measurement approach based on the first volume; andacquiring a second volume of a single ink droplet using the optical measurement approach based on the calibrated measurement parameters,wherein the optical measurement approach acquires a volume of a single ink droplet by performing a fitting process on an optical image of the ink droplet.20. The calibration method for a volume of an ink droplet according to claim 19 , further comprising claim 19 , before the step of calculating a first volume of a single ink droplet:acquiring a total mass of a plurality of ink droplets;acquiring a quantity of the plurality of ink droplets; andacquiring a density of the ink droplets.21. The calibration method for a volume of an ink droplet according to claim 20 , wherein the step of calculating a first volume of a single ink droplet comprises:calculating a total volume of the plurality of ink droplets based on the total mass and the density of the plurality of ink droplets; andcalculating the first volume based on the total volume and the quantity of the plurality of ink droplets.22. The calibration method for a volume of an ink droplet according to claim 20 , wherein the step of ...

INK JET PRINTING CONTOL METHOD UTILIZING AND PROCESS LIQUID

The present invention provides an ink jet printing apparatus and an ink jet printing method in which if an image is printed using ink and a process liquid serving to improve the printability of the ink, degradation of print image quality can be suppressed which results from a rise in the temperature of a print head. To achieve this, the present invention reduces the amount of process liquid ejected from a process liquid ejection section capable of ejecting a process liquid, with increasing temperature of an ink ejection section capable of ejecting ink. 110-. (canceled)11. A printing control method of performing printing of an image on a print medium using a plurality of print heads , each including an ink ejection section for ejecting an ink containing a color material to a unit area of the print medium , and a process liquid ejection section for ejecting a process liquid , a degree of permeation of the ink into the print medium in the unit area decreasing as an amount of the process liquid ejected to the unit area of the print medium increases , the printing control method comprising the steps of:obtaining information relating to change in a volume of an ink droplet to be ejected from the ink ejection section; anddetermining, based on the information obtained in the obtaining step, an amount of the process liquid to be ejected from the process liquid ejection section to the unit area of the print medium,wherein the amount of the process liquid is determined such that the amount of the process liquid in a case where the volume of the ink droplet is greater than a predetermined volume is smaller than that in a case where the volume of the ink droplet is equal to the predetermined volume, so as to increase the degree of permeation of the ink in the case where the volume of the ink droplet is greater than the predetermined volume so as to be more than that in the case where the volume of the ink droplet is equal to the predetermined volume, thereby suppressing a change ...

IMAGING APPARATUS AND METHOD FOR REDUCING BANDING

An imaging apparatus includes a print engine having a printhead that generates ink drops, and a printhead carrier that carries the printhead in a first direction and in a second direction. A controller determines an initial print direction based on ink drop information obtained by printing patches in the first direction and in the second direction. The controller is operatively coupled to the print engine to print an image based on the initial print direction. 120-. (canceled)21. An imaging apparatus , comprising:a print engine having a printhead that generates ink drops, and a printhead carrier that carries the printhead in a first direction and in a second direction; anda controller that determines an initial print direction based on ink drop information obtained by printing patches in the first direction and in the second direction, the controller operatively coupled to the print engine to print an image based on the initial print direction.22. The imaging apparatus of claim 21 , wherein the ink drop information includes a characteristic of the patches.23. The imaging apparatus of claim 22 , wherein the characteristic includes a luminance L* value.24. The imaging apparatus of claim 22 , wherein the characteristic includes a chromatic value.25. The imaging apparatus of claim 21 , wherein the first direction is opposite to the second direction.26. The imaging apparatus of claim 21 , further comprising a scanner to scan the patches to obtain the ink drop information from the patches claim 21 , the patches including a first patch and a second patch.27. The imaging apparatus of claim 26 , wherein:the first patch has a first luminance L* value and the second patch has a second luminance L* value; andthe controller selects the first direction as the initial print direction if the first luminance L* value of the first patch is less than the second luminance L* value of the second patch, and selects the second direction as the initial print direction if the second ...

Printing apparatus and printing method

A printing apparatus including a discharge unit, a movement unit and an adjustment unit. The discharge unit discharges ink and penetration liquid onto one side of the recording medium. The penetration liquid promotes penetration of the ink into the other side of the recording medium. The movement unit moves the discharge unit and the recording medium relative to each other. The adjustment unit adjusts a discharge amount of the penetration liquid discharged from the discharge unit onto the recording medium based on at least a relative movement speed of the discharge unit to the recording medium.

INKJET RECORDING APPARATUS

An inkjet recording apparatus includes a calculation section, a selection section, and a recording head. The calculation section calculates respective densities of first regions in pairs included in the image. The selection section selects dot patterns corresponding to the respective first regions according to the respective densities of the first regions. The recording head ejects ink onto a sheet based on a dot pattern corresponding to a region of the image other than the first regions and the dot patterns corresponding to the respective first regions. The first regions in pairs corresponds to end portions in pairs among a plurality of end portions of the image that each extend in a conveyance direction of the sheet. The dot patterns corresponding to the respective first regions each have a density lower than a corresponding one of the densities of the respective first regions calculated by the calculation section. 1. An inkjet recording apparatus comprising:a calculation section configured to calculate respective densities of first regions in pairs included in an image;a selection section configured to select dot patterns corresponding to the respective first regions according to the respective densities of the first regions calculated by the calculation section; anda recording head configured to eject ink onto a sheet based on a dot pattern corresponding to a region of the image other than the first regions and the dot patterns corresponding to the respective first regions, whereinthe first regions in pairs are end portions in pairs among a plurality of end portions of the image that each extend in a conveyance direction of the sheet, andthe dot patterns corresponding to the respective first regions each have a density lower than a corresponding one of the densities of the respective first regions calculated by the calculation section.2. The inkjet recording apparatus according to claim 1 , whereinwhen the density of at least one of the first regions calculated ...

LIQUID JET HEAD, LIQUID JET RECORDING DEVICE, AND LIQUID JET HEAD DRIVE METHOD

An ejection volume of a liquid can more finely be adjusted without lowering the ejection speed. The liquid jet head includes a plurality of nozzles adapted to jet the liquid, a piezoelectric actuator having a plurality of pressure chambers corresponding respectively to the nozzles and filled with the liquid, and adapted to vary a capacity of each of the pressure chambers, and a control section adapted to apply a pulse signal to the piezoelectric actuator to thereby expand and contract the capacity of the pressure chamber so as to jet the liquid with which the pressure chamber is filled. The control section generates a drive waveform including a plurality of the pulse signals adapted to expand the capacity of the pressure chamber, and sets a crest value of either of the pulse signals other than the pulse signal applied last to a different value from a crest value of another of the pulse signals in the drive waveform. 1. A liquid jet head comprising:a plurality of nozzles adapted to jet a liquid;a piezoelectric actuator having a plurality of pressure chambers corresponding respectively to the nozzles and filled with the liquid, and adapted to vary a capacity of each of the pressure chambers; anda control section adapted to apply a pulse signal to the piezoelectric actuator to thereby expand and contract the capacity of the pressure chamber so as to jet the liquid with which the pressure chamber is filled,wherein the control section generates a drive waveform including a plurality of the pulse signals adapted to expand the capacity of the pressure chamber, and sets a crest value of either of the pulse signals other than the pulse signal applied last to a different value from a crest value of another of the pulse signals in the drive waveform.2. The liquid jet head according to claim 1 , whereinthe control section sets the crest value of either one of the pulse signals to the different value from the crest value of the other of the pulse signals in the drive waveform.3. ...

Authentication value for fluid ejection device

A fluid ejection device includes a plurality of analog devices, and a storage element storing an authentication value including a plurality of bits, a first bit of the plurality of bits based on measured electrical characteristics of a first subset of the analog devices, and a second bit of the plurality of bits based on measured electrical characteristics of a second subset of the analog devices, the second subset different from the first subset.

CONTROLLING THE AMOUNT OF PRINTING FLUID

A method for controlling the amount of printing fluid deposited by a printhead for a plurality of passes of a swath width of a printing process is described. The printing process includes periodic servicing of the printhead. The method comprises determining an amount of printing fluid to be deposited for each pass of the swath width; identifying which pass of the swath width servicing is to occur; and reducing the determined amount of printing fluid deposited during a first pass immediately following servicing of the printhead. 1. A method for controlling the amount of printing fluid deposited by a printhead for a plurality of passes of a swath width of a printing process , the printing process including periodic servicing of the printhead , the method comprising determining an amount of printing fluid to be deposited for each pass of the swath width;identifying in which pass of the swath width servicing is to occur;reducing the determined amount of printing fluid deposited during a first pass immediately following servicing of the printhead.2. A method as recited in claim 1 , wherein the method further comprises redetermining the amount of printing fluid to be deposited for the other passes for the swath width if servicing occurs for that swath width.3. A method as recited in claim 2 , wherein the printhead comprises a nozzle array claim 2 , the nozzle array for depositing ink droplets and wherein the step of determining an amount of ink to be deposited for the swath width comprises determining a mask for masking the nozzle array to control the amount of ink deposited.4. A method as recited in claim 3 , wherein the step of redetermining the amount of ink comprisesdetermining a first mask for the passes before servicing, a second mask for the first pass immediately following servicing and a third mask for the passes thereafter.5. Apparatus for controlling the amount of printing fluid deposited by a printhead for a plurality of passes of a swath width of a printing ...

Inhibiting media deformation

A deposition module within a web press for inhibiting media deformation may include a fluid deposition device located on a side of a media, and a processing device to control the fluid deposition device to selectively apply a wetting agent to the media. The deposition of the wetting agent may be based on the location of content printed on the media as defined by print data.

PRINTING APPARATUS AND PRINTING METHOD

A printing apparatus includes a reaction liquid application portion that applies dots of reaction liquid onto a recording medium by applying the reaction liquid to pixels in a pixel array in which rasters in which a plurality of pixels are lined up in a first direction are lined up in a second direction which is orthogonal to the first direction and an ink application portion that applies ink dots to the recording medium by applying ink which includes a color material that is coagulated using an action of the reaction liquid to the pixels of the pixel array, in which the reaction liquid application portion applies the reaction liquid dots by being separated by one pixel or more in the first direction and the second direction. 1. A printing apparatus comprising:a reaction liquid application portion that applies dots of reaction liquid onto a recording medium by applying the reaction liquid to pixels in a pixel array in which rasters in which a plurality of pixels are lined up in a first direction are lined up in a second direction which is orthogonal to the first direction; andan ink application portion that applies ink dots to the recording medium by applying ink which includes a color material that is coagulated using an action of the reaction liquid to the pixels of the pixel array,wherein the reaction liquid application portion applies the reaction liquid dots so as to be separated by one pixel or more in the first direction and the second direction.2. The printing apparatus according to claim 1 ,wherein a gap between pixels to which the reaction liquid dots lined up in the first direction or the second direction are applied is two pixels or three or more pixels.3. The printing apparatus according to claim 2 ,wherein the gap between pixels to which the reaction liquid dots lined up in the first direction or the second direction are applied is seven pixels or less.4. The printing apparatus according to claim 1 , further comprising:a memory portion that stores mask ...

Image processing apparatus, image processing method, and image processing system

An image processing apparatus includes an acquiring unit, a first calculating unit, a setting unit, a second calculating unit, a first generating unit, and a second generating unit. The acquiring unit acquires image data of an image to be formed by a recording unit using an inkjet system. The first calculating unit calculates a thickness of ejected ink for each pixel based on the image data. The setting unit sets a target thickness of the image. The second calculating unit calculates a difference between the target thickness and the thickness of ink for each pixel. The first generating unit generates complementary data, in which an ejection amount of an additional droplet to realize a thickness corresponding to the difference is defined for each pixel. The second generating unit generates print data containing the image data and the complementary data.

DELAY ELEMENTS FOR ACTIVATION SIGNALS

In some examples, a fluidic die includes a set of fluid actuators arranged in an order, and a controller to determine, based on input control information relating to controlling actuation of the plurality of fluid actuators, whether a first fluid actuator of the plurality of fluid actuators is to be actuated and whether a second fluid actuator within a specified proximity of the first fluid actuator in the order is to be actuated, and in response to determining that the first fluid actuator is to be actuated and the second fluid actuator within the specified proximity of the first fluid actuator in the order is not to be actuated, activate a delay element associated with the first fluid actuator, the delay element to delay an activation signal propagated to selected fluid actuators of the set of fluid actuators in response to an actuation event. 1. A fluidic die comprising:a set of fluid actuators arranged in an order; and determine, based on input control information relating to controlling actuation of the plurality of fluid actuators, whether a first fluid actuator of the plurality of fluid actuators is to be actuated and whether a second fluid actuator within a specified proximity of the first fluid actuator in the order is to be actuated, and', 'in response to determining that the first fluid actuator is to be actuated and the second fluid actuator within the specified proximity of the first fluid actuator in the order is not to be actuated, activate a delay element associated with the first fluid actuator, the delay element to delay an activation signal propagated to selected fluid actuators of the set of fluid actuators in response to an actuation event., 'a controller to2. The fluidic die of claim 1 , wherein the controller is to:in response to determining that the first fluid actuator is to be actuated and the second fluid actuator within the specified proximity of the first fluid actuator in the order is to be actuated, deactivate the delay element ...

AMBIENT TEMPERATURE BASED FLOW RATES

Ambient temperature based flow rates can in an example include a setting a flow rate of ink to a printhead mounted in a carriage based on an ambient temperature associated with the printhead, measuring a flow rate of ink to the printhead, and causing a decrease in a velocity of the carriage in response to the flow rate of ink satisfying the threshold flow rate. 1. A system , comprising:a threshold engine to set a threshold flow rate of ink to a printhead mounted in a carriage based on an ambient temperature associated with the printhead;a measure engine to measure a flow rate of ink to the printhead; anda velocity engine to cause a decrease in a velocity of the carriage in response to the flow rate of ink satisfying the threshold flow rate.2. The system of claim 1 , wherein the velocity engine causes a decrease of at least one of a voltage or a pulse width of a voltage associated with the carriage.3. The system of claim 1 , wherein the velocity engine decreases the velocity of the carriage on an upcoming print swath sufficient to reduce the flow of ink rate of ink to be below the threshold flow rate.4. The system of claim 1 , including a determine engine to determine a swath dot density associated with a stored image being printed by the printhead.5. The system of claim 1 , wherein an increase in an ambient temperature corresponds to an increase in the threshold flow rate of ink.6. The system of claim 1 , wherein the threshold flow rate of ink is a particular value of volumetric flow rate of ink through tubes that couple the ink supply to the printhead and is based on the ambient temperature associated with the printhead.7. A non-transitory computer readable medium storing instructions executable by a processing resource to cause a device to:measure an ambient temperature associated with a printhead;set a threshold volumetric flow rate of ink from an ink supply to a printhead mounted in a carriage based on an ambient temperature;measure a volumetric flow rate of ink ...

METHOD TO IMPROVE THE SYSTEM STABILITY OF INKJET PRINTING SYSTEMS

A method for stabilizing a print quality in an inkjet printing system is described. The inkjet printing system can include a nozzle arrangement that may be activated with a number of control signals that can be used to fire ink droplets with corresponding different droplet sizes onto a recording medium. In the method for stabilizing a print quality in an inkjet printing system, a rastered image for an image template can be created. The rastered image can be printable by the inkjet printing system using a subset of the different droplet sizes. Further, the nozzle arrangement can be activated with a control signal for an unused droplet size of the different droplet sizes to induce the nozzle arrangement to generate a prefire pulse. 1. A method for stabilizing a print quality in an inkjet printing system including a nozzle arrangement that may be activated with a number M of control signals , M being greater than one and the M control signals being usable to fire ink droplets with corresponding M different droplet sizes onto a recording medium , the method comprising:creating a rastered image for an image template, the rastered image being printable by the inkjet printing system using a subset of the M different droplet sizes; andactivating the nozzle arrangement with a control signal for an unused droplet size of the M different droplet sizes to induce the nozzle arrangement to generate a prefire pulse.2. The method according to claim 1 , further comprising:determining, based on the rastered image, a dead time between two ink droplets in direct chronological succession to be fired from the nozzle arrangement to print the rastered image; anddetermining, based on the dead time, whether the nozzle arrangement should generate a prefire pulse during the dead time.3. The method according to claim 2 , further comprising determining a dead time threshold claim 2 , wherein:the determination of whether the nozzle arrangement should generate the prefire pulse during the dead ...

APPARATUS FOR MANUFACTURING DISPLAY DEVICE AND METHOD OF MANUFACTURING THE DISPLAY DEVICE

Provided are an apparatus for manufacturing a display device and a method of manufacturing the display device. The apparatus for manufacturing a display device includes a droplet discharge unit including a nozzle that discharges a droplet, at least one sensor that senses a partial shape of an outer surface of the droplet projected onto a plane and a cross-sectional shape of the droplet discharge unit projected onto the plane, the plane being on a falling path of the droplet discharged from the droplet discharge unit, and a controller that calculates, based on a result sensed by the at least one sensor, at least one of a volume of the droplet, a falling speed of the droplet, a discharge angle at which the droplet is discharged from the nozzle, and a falling path of the droplet moving from the nozzle to a substrate. 1. An apparatus for manufacturing a display device , the apparatus comprising:a droplet discharge unit including a nozzle that discharges a droplet;at least one sensor that senses a partial shape of an outer surface of the droplet projected onto a plane and a cross-sectional shape of the droplet projected onto the plane, the plane being on a falling path of the droplet discharged from the droplet discharge unit; anda controller that calculates, based on a result sensed by the at least one sensor, at least one of a volume of the droplet, a falling speed of the droplet, a discharge angle at which the droplet is discharged from the nozzle, and a falling path of the droplet moving from the nozzle to a substrate.2. The apparatus of claim 1 , wherein the at least one sensor includes a confocal microscope or a chromatic confocal line sensor.3. The apparatus of claim 1 , whereinthe at least one sensor includes a plurality of sensors, andthe plurality of sensors are spaced apart from each other along the falling path of the droplet.4. The apparatus of claim 3 , further comprising:a reflection unit that bends laser light emitted from the at least one sensor and ...

DROPLET EJECTION CONTROL APPARATUS, DROPLET EJECTION CONTROL METHOD, AND DROPLET EJECTION CONTROL PROGRAM

Droplet ejection amounts are adjusted during a process of generating raster data, and this process is realized by a control circuit. The sum total of droplet ejection amounts exceeds 100% as for three nozzles while the sum total of droplet ejection amount is below 100% as for one nozzle, which is repeated at some nozzle numbers. The sum total of droplet ejection amounts is 100% in a normal portion. As such, in the case where this sum total is taken as a reference amount, the sum total of droplet ejection amounts for each raster in a region where overlap printing is performed is sequentially changed to be equal to or greater than the reference amount in the normal region where the overlap printing is not performed, and to be equal to or smaller than the above reference amount. 1. A droplet ejection control apparatus configured to cause a droplet ejection device including a head in which a plurality of nozzles are disposed being aligned in a predetermined direction to perform overlap printing in a predetermined region and perform normal printing which does not overlap in another predetermined region , the droplet ejection control apparatus comprising:a droplet ejection amount control unit configured to change droplet ejection amounts for each raster in a region where the overlap printing is performed so that a sum total of the droplet ejection amounts for each raster in the region where the overlap printing is performed sequentially changes to be equal to or greater than a reference amount that is defined by a sum total of droplet ejection amounts in a normal region and to be equal to or smaller than the above reference amount.2. The droplet ejection control apparatus according to claim 1 ,wherein the droplet ejection amount control unit causes a droplet ejection amount of each head to gradually decrease as it progresses toward an end of the nozzle in a region where overlap printing is performed.3. The droplet ejection control apparatus according to claim 1 ,wherein ...

Liquid Ejection Apparatus Provided with Nozzles Located at Different Positions in Conveying Direction

A liquid ejection apparatus corrects image data by: setting a to-be-corrected dot element; acquiring a correction amount based on an offset between a formation position at which a dot corresponding to the to-be-corrected dot element is to be formed on a recording medium while the recording medium is conveyed the reference conveyance amount per unit time and a formation position at which a dot corresponding to the to-be-corrected dot element is to be formed while the recording medium is conveyed a conveyance amount different from the reference conveyance amount per unit time; and executing correction on the to-be-corrected dot element. The correction is executed by setting a density value for the to-be-corrected dot element as that for corresponding one dot element whose data array order is shifted from a data array order of the to-be-corrected dot element by the number of dot elements corresponding to the correction amount. 1. A liquid ejection apparatus comprising:a conveying mechanism configured to convey a recording medium in a conveying direction;a liquid ejection head having an ejection surface on which a plurality of nozzle arrays is arranged in the conveying direction, each of the plurality of nozzle arrays having a plurality of nozzles arranged in a direction perpendicular to the conveying direction, each of the plurality of nozzles for ejecting a liquid droplet on the recording medium conveyed by the conveying mechanism, a conveyance section being defined between a position at which a leading end of the recording medium reaches an ejection region and a position at which a trailing end of the recording medium has passed through the ejection region, the ejection region being a region in which at least part of the recoding medium faces at least one nozzle on the ejection surface, the conveyance section being divided into a first divisional section in which the recording medium is conveyed a first conveyance amount per unit time and a second divisional section ...

METHOD AND SYSTEM TO STORE DROP COUNTS

An exemplary embodiment of the present technique may include a method including monitoring a number of drops of ink released by a print head of a printing device. The method may also include associating the number of drops of ink with a quanta of charge. The method may also include storing the associated quanta of charge in a memory cell of a programmable read-only memory (PROM) device. 1. A method , comprising:monitoring a number of drops of ink released by a print head of a printing device;associating the number of drops of ink with a quanta of charge; andstoring the associated quanta of charge in a memory cell of a programmable read-only memory (PROM) device.2. The method of claim 1 , further comprising comparing the stored quanta of charge to a value associated with a predetermined number of drops of ink to determine the number of drops of ink released by the print head.3. The method of claim 2 , further comprising converting the stored quanta of charge to a digital signal at an analog to digital conversion (ADC) device claim 2 , wherein the value is a digital value.4. The method of claim 1 , wherein the quanta of charge in the memory cell decays over time claim 1 , further comprising:comparing the memory cell to a reference cell of a reference PROM device to determine the rate of decay of the memory cell; andverifying the quanta of charge of the memory cell based on the comparison to the reference cell.5. A system claim 1 , comprising:a printing device to enable a number of drops of ink released by a print head of the printing device to be determined;a storage device, the storage device to store instructions for determining the ink drop counts; and monitor a number of drops of ink released by the print head;', 'associate the number of drops of ink with a quanta of charge; and', 'store the associated quanta of charge in a memory cell of a programmable read-only memory (PROM) device., 'a processor of the printing device that executes the stored instructions to6. ...

Image recording apparatus

The image recording apparatus has a head, a tank, a case that receives a cartridge, and a controller. When the cartridge is installed in the case of the image recording apparatus, the liquid in the cartridge flows to the tank by a difference between a liquid level in the cartridge and a liquid level in the tank. The controller controls a display to display a first notification indicating an ink cartridge based on receiving a first signal output from a sensor when a liquid level in an ink chamber reached a specific position. The controller, after receiving the first signal from the sensor, counts a count value indicating an amount of discharged liquid from the head. Further, the controller, in response to the count value reaching a first threshold, controls the display to display a second notification.

LIQUID DISCHARGE APPARATUS, PROCESSING METHOD DETERMINING APPARATUS, PROCESSING METHOD DETERMINING METHOD, AND RECORDING MEDIUM

A liquid discharge apparatus includes a liquid discharge head, a conveyance device, an imaging device, and processing circuitry. The liquid discharge head is configured to discharge liquid to an object to form a liquid application surface. The conveyance device is configured to convey the object. The imaging device is configured to capture a plurality of positions of the object on which the liquid application surface is formed. The processing circuitry is configured to control discharge of the liquid by the liquid discharge head according to a plurality of pieces of different pattern data for forming the liquid application surface, control conveyance of the object by the conveyance device to form the liquid application surface corresponding to the pattern data, and determine a processing method of forming the liquid application surface according to captured images of the plurality of positions captured by the imaging device. 1. A liquid discharge apparatus comprising:a liquid discharge head configured to discharge liquid to an object to form a liquid application surface;a conveyance device configured to convey the object;an imaging device configured to capture a plurality of positions of the object on which the liquid application surface is formed; andprocessing circuitry configured to:control discharge of the liquid by the liquid discharge head according to a plurality of pieces of different pattern data for forming the liquid application surface;control conveyance of the object by the conveyance device to form the liquid application surface corresponding to the pattern data; anddetermine a processing method of forming the liquid application surface according to captured images of the plurality of positions captured by the imaging device.2. The liquid discharge apparatus according to claim 1 ,wherein the processing circuitry determines a processing method of forming the liquid application surface with better quality according to feature quantities obtained from the ...

SYSTEM FOR DETECTING INOPERATIVE INKJETS IN PRINTHEADS EJECTING CLEAR INK USING THERMAL SUBSTRATES

An apparatus detects inoperative inkjets during printing. The apparatus operates the printhead or printheads in the printer to form test pattern on a thermal substrate. The heat of the materials used to form the test pattern change the optical density of the areas where the materials land. The area where the test pattern is formed is imaged and the image data are analyzed to identify inoperative inkjets. 1. A printer comprising:a printhead configured with a plurality of inkjets to eject material;a supply of thermal substrate having a surface with a thermal sensitive dye, the supply of thermal substrate being configured to move thermal substrate to a position opposite the printhead to receive material ejected from the printhead;an optical sensor configured to generate electrical signals corresponding to an optical density of a location on the thermal substrate;an actuator operatively connected to the optical sensor to move the optical sensor to a position opposite the thermal substrate onto which material has been ejected; anda controller operatively connected to the actuator, the optical sensor, and the printhead, the controller being configured to operate the printhead to eject a predetermined number of material drops from each inkjet onto the surface of the thermal substrate having the thermal sensitive dye to enable the predetermined number of material drops to change a color of one or more portions of the thermal substrate and form a test dot for each inkjet on the thermal substrate, to operate the actuator to the optical sensor to a position opposite the thermal substrate, and to identify inoperative inkjets in the printhead with reference to the data received from the optical sensor that corresponds to optical densities of the thermal substrate at a plurality of locations on the thermal substrate.2. The printer of claim 1 , the supply of thermal substrate further comprising:a plurality of thermal substrates, each substrate having the surface with the thermal ...

LIQUID DISCHARGE HEAD AND LIQUID DISCHARGE APPARATUS

A cover member includes two end regions located at two ends in a first direction, and two beam portions which extend in the first direction and connect the two end regions together and which, together with the two end regions, form a single opening that exposes a plurality of discharge ports. When a width of the opening is denoted as a [mm], a minimum length in the first direction of the end regions is denoted as c [mm], a modulus of longitudinal elasticity of the cover member is denoted as E [GPa], and a thickness of the cover member is denoted as t [mm], the following expression is established. 2. The liquid discharge head according to claim 1 , wherein c≧8 mm.31212. The liquid discharge head according to claim 1 , wherein when widths in the second direction of the two beam portions are denoted as b and b claim 1 , respectively claim 1 , a>b and a>b.412. The liquid discharge head according to claim 3 , wherein the widths b and b are each 5 mm or more and 10 mm or less.5. The liquid discharge head according to claim 1 , wherein a plurality of the recording element substrates are arranged in a row in the first direction.6. The liquid discharge head according to claim 5 , wherein the second direction is along a conveyance direction of a recording medium claim 5 , and a length in the first direction of the opening is longer than a printing width in the first direction onto the recording medium.7. The liquid discharge head according to claim 5 , wherein two electrical wiring members that supply electric power for discharging liquid are connected to two sides of each recording element substrate claim 5 , the two sides opposing to the beam portions.8. The liquid discharge head according to claim 7 , further comprising:a flow path member which is located on an opposite side to the cover member of each recording element substrate, and in which a flow path that supplies a liquid to each recording element substrate is formed,wherein the flow path member comprises, on both ...

Image processing device, image forming apparatus, method of forming image for decorating object, and non-transitory recording medium

An image processing device includes circuitry to acquire image data of an image to be formed by a recording unit employing an inkjet method, calculate, based on the image data, ink thickness per pixel that indicates a thickness of ink to be discharged to form the image, set the maximum ink thickness per pixel of the entire image as a target thickness of the image, calculate, for each pixel, the difference between the target thickness and the ink thickness per pixel, create complementary data regulating thickness compensating the difference, and create print data including the image data and the complementary data.

Element substrate, printhead, and printing apparatus

An element substrate, comprises: a plurality of printing elements configured to discharge liquid; a plurality of first driving elements disposed in correspondence with the plurality of printing elements and configured to drive the plurality of printing elements; a plurality of heating elements configured to heat the element substrate; a plurality of second driving elements disposed in correspondence with the plurality of heating elements and configured to drive the plurality of heating elements; and a delay unit that delays timing of driving the plurality of second driving elements to drive the plurality of second driving elements at a predetermined time difference when driving the plurality of second driving elements simultaneously.

INK DROPLET VOLUME MEASURING APPARATUS AND INK DROPLET VOLUME MEASURING METHOD USING THE SAME, AND THIN FILM LAYER FORMING APPARATUS USING THE MEASURING APPARATUS, AND MANUFACTURING METHOD OF DISPLAY APPARATUS USING THE THIN FILM LAYER FORMING APPARATUS

An ink droplet volume measuring apparatus including: a substrate on which an ink droplet is dropped; a chromatic confocal sensor irradiating light having a plurality of wavelengths to the ink droplet dropped on the substrate and scanning the ink droplet; and a controller calculating a three-dimensional shape of the ink droplet from a signal scanned by the chromatic confocal sensor. 1. An ink droplet volume measuring apparatus comprising:a substrate on which an ink droplet is dropped;a chromatic confocal sensor configured to irradiate light having a plurality of wavelengths to the ink droplet dropped on the substrate and scan the ink droplet; anda controller configured to calculate a three-dimensional shape of the ink droplet from a signal scanned by the chromatic confocal sensor.2. The ink droplet volume measuring apparatus of claim 1 , wherein a plurality of the ink droplets are dropped on the substrate.3. The ink droplet volume measuring apparatus of claim 1 , wherein:the chromatic confocal sensor is configured to scan the plurality of ink droplets; andthe controller is configured to calculate a three-dimensional shape for each of the plurality of droplets.4. The ink droplet volume measuring apparatus of claim 1 , wherein the ink droplet comprises nanoparticles.5. The ink droplet volume measuring apparatus of claim 4 , wherein the ink comprises ink for forming a quantum dot thin-film layer.6. A thin film layer forming apparatus comprising:an inkjet head comprising a nozzle for dropping an ink droplet;a substrate on which the ink droplet is dropped;a chromatic confocal sensor configured to irradiate light having a plurality of wavelengths to the ink droplet dropped on the substrate and scan the ink droplet; anda controller configured to feedback-control an ejection amount of the nozzle of the inkjet head by calculating the three-dimensional shape of the ink droplet from a signal scanned by the chromatic confocal sensor.7. The thin film layer forming apparatus of ...

Methods and systems for inkjet drop positioning

Methods and apparatus for inkjet inkjet drop positioning are provided. A first method includes determining an intended deposition location of an ink drop on a substrate, depositing the ink drop on the substrate using an inkjet printing system, detecting a deposited location of the deposited ink drop on the substrate, comparing the deposited location to the intended location, determining a difference between the deposited location and the intended location, and compensating for the difference between the deposited location and the intended location by adjusting a parameter of an inkjet printing system. Numerous other aspects are provided.

Methods and systems for inkjet drop positioning

Methods and apparatus for inkjet inkjet drop positioning are provided. A first method includes determining an intended deposition location of an ink drop on a substrate, depositing the ink drop on the substrate using an inkjet printing system, detecting a deposited location of the deposited ink drop on the substrate, comparing the deposited location to the intended location, determining a difference between the deposited location and the intended location, and compensating for the difference between the deposited location and the intended location by adjusting a parameter of an inkjet printing system. Numerous other aspects are provided.

消除喷头色差的打印方法、装置、设备及存储介质

本发明属于打印技术领域，提供了一种消除喷头色差的打印方法、装置、设备及存储介质。本发明的消除喷头色差的打印方法包括:S1：获取待打印图像采用原始打印精度进行打印所需的墨量作为第一打印墨量；S2：获取待打印图像采用喷头精度进行打印所需的墨量作为第二打印墨量；S3：获取喷墨颜色均匀部分的喷嘴的位置信息；S4：根据所述位置信息和墨量差值确定喷头一次扫描打印后的步进距离。S5：控制喷头中至少一部分喷墨颜色均匀部分的喷嘴按照喷头精度进行打印，其余喷嘴根据采用喷头精度打印的点阵位置进行打印。本发明还包括用于执行上述方法的装置、设备和存储介质。本发明可以消除打印图像由于喷头中喷嘴差异所造成的色差。

Apparatus and method for treating substrate, and discharge rate measuring unit

본 발명은 기판 처리 장치에 관한 것이다. 본 발명의 일 실시예에 따른 기판 처리 장치는, 기판을 지지하는 지지 유닛, 상기 지지 유닛에 지지된 상기 기판으로 처리액을 분사하는 하나 또는 복수의 헤드를 포함하는 노즐 유닛, 그리고 상기 노즐에서 토출되는 처리액의 토출량을 측정하는 토출량 측정 유닛을 포함하되, 상기 토출량 측정 유닛은, 상기 처리액의 토출량이 측정되는 공간을 제공하는 스테이지, 상기 스테이지로 상기 토출량을 측정할 테스트 필름을 공급 및 회수하는 롤러 부재, 그리고 상기 테스트 필름 상에 토출된 상기 처리액을 흡입하는 흡입 부재를 포함할 수 있다. The present invention relates to a substrate processing apparatus. A substrate processing apparatus according to an embodiment of the present invention includes a support unit for supporting a substrate, a nozzle unit including one or a plurality of heads spraying a processing liquid to the substrate supported by the support unit, and discharge from the nozzle a discharge amount measuring unit for measuring the discharge amount of the treatment liquid, wherein the discharge amount measuring unit supplies and retrieves a stage providing a space in which the discharge amount of the treatment liquid is measured, and a test film for measuring the discharge amount to the stage It may include a roller member, and a suction member for sucking the treatment liquid discharged on the test film.

Methods and system for inkjet drop positioning

잉크젯 드롭 포지셔닝을 위한 장치 및 방법이 제공된다. 제 1 방법은 기판상에서 잉크 드롭의 의도된 부착 위치를 결정하는 단계, 잉크젯 프린팅 시스템을 이용하여 기판상에 잉크 드롭을 부착시키는 단계, 기판상에 부착된 잉크 드롭의 부착 위치를 탐지하는 단계, 상기 부착된 위치와 의도된 위치를 비교하는 단계, 부착된 위치와 의도된 위치 사이의 편차를 결정하는 단계, 그리고 잉크젯 프린팅 시스템의 파라미터를 조정함으로써 부착된 위치와 의도된 위치 사이의 편차를 보상하는 단계를 포함한다. 여러 가지 기타 특징들도 제공된다.

Techniques for print ink droplet measurement and control to deposit fluids within precise tolerances

An ink printing process employs per-nozzle droplet volume measurement and processing software that plans droplet combinations to reach specific aggregate ink fills per target region, guaranteeing compliance with minimum and maximum ink fills set by specification. In various embodiments, different droplet combinations are produced through different printhead/substrate scan offsets, offsets between printheads, the use of different nozzle drive waveforms, and/or other techniques. These combinations can be based on repeated, rapid droplet measurements that develop understandings for each nozzle of means and spreads for expected droplet volume, velocity and trajectory, with combinations of droplets being planned based on these statistical parameters. Optionally, random fill variation can be introduced so as to mitigate Mura effects in a finished display device. The disclosed techniques have many possible applications.

Apparatus and method for treating substrate, and discharge rate measuring unit

본 발명은 기판 처리 장치에 관한 것이다. 본 발명의 일 실시예에 따른 기판 처리 장치는, 기판을 지지하는 지지 유닛, 상기 지지 유닛에 지지된 상기 기판으로 처리액을 분사하는 하나 또는 복수의 헤드를 포함하는 노즐 유닛, 그리고 상기 노즐에서 토출되는 처리액의 토출량을 측정하는 토출량 측정 유닛을 포함하되, 상기 토출량 측정 유닛은, 상기 처리액의 토출량이 측정되는 공간을 제공하는 스테이지, 상기 스테이지로 상기 토출량을 측정할 테스트 필름을 공급 및 회수하는 롤러 부재, 그리고 상기 테스트 필름 상에 토출된 상기 처리액을 경화시키는 경화 부재를포함할 수 있다. The present invention relates to a substrate processing apparatus. A substrate processing apparatus according to an embodiment of the present invention includes a support unit for supporting a substrate, a nozzle unit including one or a plurality of heads spraying a processing liquid to the substrate supported by the support unit, and discharge from the nozzle and a discharge amount measuring unit for measuring the discharge amount of the treatment liquid, wherein the discharge amount measuring unit supplies and retrieves a stage providing a space for measuring the discharge amount of the treatment liquid, and a test film for measuring the discharge amount to the stage It may include a roller member, and a curing member for curing the treatment liquid discharged on the test film.

LIQUID EJECTING DEVICE, CONTROL METHOD FOR LIQUID EJECTING DEVICE

Coating method, coating device and light emitting device

Device for printing droplet or ink on substrate or paper

A device for printing a droplet onto a substrate includes: a droplet generating member which is needle-shaped and comprises a receiving portion disposed vertically to receive a solution, and a discharge hole connected to the receiving portion and formed on a bottom of the receiving portion so that the solution can be discharged from the receiving portion; a substrate disposed below the droplet generating member, the substrate includes a target portion to which the droplet discharged from the discharge hole of the droplet generating member is dropped and attached; a voltage applier applying a voltage to the droplet so that the droplet can be dropped onto the target portion of the substrate; a volume measuring unit measuring the volume of the droplet; and a droplet control unit maintaining the volume of the droplet at a predetermined level based on the measured volume of the droplet.

Droplet information measuring apparatus and substrate treating system including the same

PDPA 검사 장치에서 프린지 위치에 해당하는 지점을 확인하기 위해 노즐 뷰 카메라를 설치하는 액적 정보 측정 장치 및 이를 구비하는 기판 처리 시스템을 제공한다. 상기 액적 정보 측정 장치는, 제1 광을 생성 및 출력하는 제1 발광 모듈; 제1 광과 교차하는 제2 광을 생성 및 출력하는 제2 발광 모듈; 제1 광과 제2 광의 교차 영역을 통과하는 액적을 감지하는 검출 모듈; 액적을 토출하는 노즐을 측정하는 이미지 획득 모듈; 및 액적을 감지하여 얻은 정보 및/또는 노즐을 측정하여 얻은 정보를 기초로 액적에 대한 정보를 생성하는 제어 모듈을 포함한다.

A system that detects inoperable inkjets in a print head that ejects transparent ink using a thermal substrate.

Method for correcting printing density of printing apparatus and printing apparatus

Delay factor for activation signal

일부 예에서, 유체 다이는 순서대로 배열된 유체 액추에이터들과, 제어기를 포함하고, 상기 제어기는 복수의 유체 액추에이터들의 작동을 제어하는 것에 관한 입력 제어 정보에 기초하여, 복수의 유체 액추에이터들 중 제 1 유체 액추에이터가 작동될 것인지와, 순서상 상기 제 1 유체 액추에이터의 특정의 근접 거리 내의 제 2 유체 액추에이터가 작동될 것인지를 결정하고, 상기 제 1 유체 액추에이터가 작동될 것이라고 결정하는 것과 순서상 제 1 유체 액추에이터의 특정의 근접 거리 내의 제 2 유체 액추에이터가 작동되지 않을 것이라고 결정하는 것에 응답하여, 상기 제 1 유체 액추에이터와 연관된 지연 요소를 활성화하고, 상기 지연 요소는 작동 이벤트에 응답하여 상기 유체 액추에이터들의 세트 중 선택된 유체 액추에이터들에 전파되는 활성화 신호를 지연시킨다. In some examples, the fluid die includes fluid actuators arranged in order and a controller, the controller based on input control information relating to controlling actuation of the plurality of fluid actuators, wherein the controller comprises a first one of the plurality of fluid actuators. determining whether a fluid actuator will be actuated, determining whether a second fluid actuator within a certain proximity of the first fluid actuator in sequence will actuate, determining that the first fluid actuator will actuate, and determining that the first fluid actuator will actuate the first fluid actuator in sequence In response to determining that a second fluid actuator within a certain proximity of the actuator will not be actuated, activating a delay element associated with the first fluid actuator, the delay element responsive to an actuation event of one of the set of fluid actuators. Delays the activation signal propagating to selected fluid actuators.

Printing apparatus and printing method

本发明提供了印刷装置以及印刷方法，能在进行印刷的片状的记录介质尽可能地消除其一面与另一面的浓度差。印刷装置是向液体能渗透的片状的记录介质进行印刷的印刷装置，其包括：喷出部，对所述记录介质的一面喷出油墨，并喷出促进所述油墨向记录介质的另一面渗透的渗透液；移动部，当进行所述印刷时，使所述喷出部和所述记录介质相对移动；以及调整部，至少根据所述喷出部和所述记录介质的相对的移动速度，调整从所述喷出部向所述记录介质喷出的所述渗透液的喷出量。

Method for printing images with liquid ink

本发明涉及一种用于以液态油墨印刷图像的方法，其中，所述油墨借助泵(7)泵送到印刷头(4)，并且所述图像的行(13，14)借助印刷头印刷到移动的承印材料(5)上，其特征在于，对于所述图像(9，10)的多个单独的行(13，14)或者多个编组的行(13，14)分别计算与用于所述行的油墨需要量相关的值(A i ，22)，并且所述泵(7)通过基于所计算的值的预控制信号来预控制。本发明以有利的方式实现进一步提高印刷质量。

Drive signal delay factor

Device for printing droplet on a substrate and a method for printing droplet on it

본 발명은, 용액방울의 부피를 설정된 부피로 일정하게 유지하도록 함으로써 생체입자 등을 포함하는 용액을 기판의 원하는 위치의 표적부에 원하는 크기로 정확하게 떨어뜨릴 수 있도록 구조가 개선된 기판 상에 용액을 프린팅하는 장치에 관한 것이다. 상하방향으로 길게 배치되어 있으며, 용액이 수용되는 수용부와, 상기 수용부와 연결되며 상기 용액이 그 수용부의 외부로 토출되도록 그 수용부의 하단부에 형성된 토출구를 가지는 바늘 형상의 용액방울 생성부재; 상기 용액방울 생성부재의 하방에 배치되어 있으며, 상기 용액방울 생성부재의 토출구로부터 토출되는 용액이 떨어져 부착되는 표적부를 가지는 기판; 상기 토출구에 생성된 용액방울에 힘을 가하고 상기 용액방울이 상기 기판의 표적부로 떨어지도록 하는 전압인가장치;상기 토출구로부터 하방으로 돌출되어 형성된 용액방울의 부피를 측정하는 부피측정수단; 및 상기 부피측정수단에 측정된 상기 용액방울의 부피데이터에 기초하여 상기 용액방울의 부피를 미리 설정된 설정부피로 유지하도록 하는 용액조절수단;을 포함하는 것을 특징으로 한다. 바이오칩, DNA 마이크로어레이, 생체입자, 프린팅(printing), 전기전하집중 현상, Electric charge concentration, 부피측정수단, 용액조절수단, 쿨롱힘, 전기영동력, 유전영동력, 개방형 전압인가장치

Image recording device, image recording method and program

Ink jet printing method and ink jet printing apparatus

本发明公开一种喷墨印刷方法及喷墨印刷装置，所述喷墨印刷方法利用映射控制值和离散油墨量而输入特定控制值时被控制为喷射映射的离散油墨量的多个喷嘴，其包括如下步骤：对多个喷嘴输入映射特定离散油墨量的控制值而测定喷射油墨量，从而确定多个喷嘴的喷射性能；对包括由基于印刷分辨率(dpi)确定的至少两个以上的行(row)及列(column)构成的多个点(dots)的窗口，计算对多个点喷射基准离散油墨量时对应的目标印刷油墨量；以及为了使对窗口内喷射的墨点的喷射油墨量总和保持目标印刷油墨量，基于对多个喷嘴测定的喷射油墨量确定多个喷嘴的控制值。

Ink droplet inspecting apparatus and method, inkjet print system having the same

액적 검사 장치와 액적 검사 방법 및 이를 포함하는 잉크젯 프린트 시스템이 개시된다. 본 발명의 일 실시 예에 따른 액적 검사 장치는, 잉크젯 프린트 장치의 잉크젯 토출 헤드에서 토출되어, 기판에 착탄된 액적의 특성을 검사하기 위한 액적 검사 장치에 있어서, 상기 기판에 착탄된 액적에 상응하는 액적 영상을 생성하는 카메라 모듈; 및 상기 액적 영상으로부터 상기 액적의 체적을 구하는 프로세서를 포함할 수 있다.

Coating method, coating apparatus and light-emitting device

A coating method, a coating device and a light-emitting device, the coating method comprises: controlling an ink supply device to stop supplying ink to a micro nozzle when it is determined that the lowest end of an ink droplet from the micro nozzle reaches a first position; determining that the distance between the end of the micro nozzle and a substrate reaches a second distance, the second distance being preset; controlling the ink supply device to continue to supply ink, and controlling the micro nozzle to move relative to the substrate for a pattern coating. The disclosure provides a good pattern forming solution, thereby avoiding the technical problem in the prior art of inkjet printing apparatuses easily causing nozzle clogging.

Apparatus for inspecting droplet

라인 스캔 방식을 이용하여 복수개의 약액에 대한 이차원 정보를 획득하며, 다양한 종류의 약액을 검사하여 구축된 데이터베이스를 이용하여 각각의 약액의 삼차원 정보를 검출하여, 넓은 검사 영역에서 복수개의 약액의 상태를 실시간으로 검사할 수 있는 약액 검사 장치가 제공된다. 상기 약액 검사 장치는 약액에 대한 정보, 약액을 토출하는 노즐에 대한 정보 및 약액이 토출되는 기판에 대한 정보를 관련시켜 저장하는 데이터베이스; 기판 상에 토출되는 복수개의 약액에 대하여 이차원 정보를 측정하는 약액 정보 측정부; 및 이차원 정보 및 데이터베이스에 저장된 정보를 기초로 복수개의 약액에 대하여 삼차원 정보를 획득하며, 삼차원 정보를 기초로 복수개의 약액을 검사하는 약액 검사부를 포함한다. Using a line scan method, two-dimensional information on a plurality of chemical solutions is acquired, and three-dimensional information of each chemical solution is detected using a database built by examining various types of chemical solutions, and the state of a plurality of chemical solutions is monitored in a wide test area. There is provided a chemical liquid testing device capable of testing in real time. The chemical liquid inspection apparatus includes: a database for storing information on a chemical liquid, information on a nozzle for discharging the chemical liquid, and information on a substrate from which the chemical liquid is discharged in association with each other; A chemical liquid information measuring unit that measures two-dimensional information on a plurality of chemical liquids discharged on the substrate; And a chemical solution inspection unit acquiring three-dimensional information on the plurality of chemical solutions based on the two-dimensional information and information stored in the database, and inspecting the plurality of chemical solutions based on the three-dimensional information.

Correction data setting apparatus and inkjet head

A first output section outputs a first parameter calculated for each nozzle in a group obtained by dividing the nozzles into groups for each certain number so that density unevenness of ink ejected from each nozzle in the group is corrected. A second output section outputs a second parameter calculated for each group so that change rate of the density unevenness between groups is corrected. A first register circuit divides first parameters for each nozzle in the group and stores the first parameters. A second register circuit divides second parameters for each group and stores the second parameters. A multiplication section sequentially multiplies the first parameters by the second parameters. A conversion section converts a multiplication value to correction data of each nozzle. A setting section sets the correction data in a memory.

Control method for realizing uniform jetting of multi-nozzle ink-jet printing

本发明提出一种实现多喷嘴喷墨打印均匀喷射的控制方法，对不同的喷嘴在不同的施加在压电单元的脉冲波形对应的墨滴的体积进行方差分析，选择体积方差最小时对应的打印参数进行打印。其将多喷嘴喷射墨滴的行为进行了统计数值化，不仅可以获得单喷嘴情形下，墨滴形态与打印参数之间的关系，同时也可以获得多喷嘴喷射墨滴的集体行为特点，优化出适用于多喷嘴打印的参数集合，从而获得均匀的墨滴喷射，提高打印效率，对大面积打印工艺优化方面具有重大的意义。

Method for printing an image using liquid ink

A method for printing an image with improved printing quality using liquid ink includes using a pump to pump ink to a print head for printing rows of the image onto a moving printing substrate. A respective value correlated with the amount of ink required to print the rows is calculated for a plurality of individual rows or a plurality of grouped rows of the image. The pump receives a preemptive control signal based on the calculated values.

Automated high performance waveform design by evolutionary algorithm

A method can include receiving an initial waveform and generating, testing, and evaluating the performance of an initial child set of waveforms based on an initial parent set of waveforms from the initial waveform. The method can also include determining whether a termination condition has been met based on the evaluating and, if so, providing an optimized waveform. If the termination condition has not been met, the method can also include generating subsequent child sets of waveforms based on the previous child set(s).

Image processing apparatus, image processing method and storage medium

The image processing apparatus of the present invention includes: an image data acquisition unit configured to acquire image data; a generation unit configured to generate an ejection pattern of ink droplets from the image data, which are ejected for forming dots from a plurality of nozzles of an image forming apparatus; a characteristic acquisition unit configured to acquire an ejection characteristic of ink droplets of the image forming apparatus; and a pattern change processing unit configured to change the ejection pattern based on the ejection characteristic and the ejection pattern, and the pattern change processing unit repeatedly performs, in a case where a gap occurs between dots that should be formed so as to contact each other by the image forming apparatus, the ejection pattern change until the gap is eliminated.

Printing apparatus and printing method

A printing apparatus includes a reaction liquid application portion that applies dots of reaction liquid onto a recording medium by applying the reaction liquid to pixels in a pixel array in which rasters in which a plurality of pixels are lined up in a first direction are lined up in a second direction which is orthogonal to the first direction and an ink application portion that applies ink dots to the recording medium by applying ink which includes a color material that is coagulated using an action of the reaction liquid to the pixels of the pixel array, in which the reaction liquid application portion applies the reaction liquid dots by being separated by one pixel or more in the first direction and the second direction.

Methods and system for inkjet drop positioning

本发明公开了用于喷墨液滴定位的方法和装置。第一方法包括确定衬底上墨水滴的期望沉积位置；用喷墨打印系统将墨水滴沉积到衬底上；检测衬底上沉积的墨水滴的沉积位置；将沉积位置与期望位置进行比较；确定沉积位置与期望位置之间的差异，并通过调整喷墨打印系统的参数对沉积位置与期望位置之间的差异进行补偿。本发明还提供了许多其他的方面。

Liquid ejecting head, liquid ejecting recording apparatus, and liquid ejecting head driving method

根据本发明，能够不使吐出速度降低，更细微地调整液体的吐出量。液体喷射头具备：喷射液体的多个喷嘴；压电促动器，其具有分别对应于多个喷嘴且填充液体的多个压力室，并使压力室内的容积变化；以及控制部，其通过对压电促动器施加脉冲信号，使压力室内的容积膨胀及收缩，而使填充在压力室内的液体喷射。控制部使叠加多个使压力室内的容积膨胀的脉冲信号的驱动波形产生，并且在该驱动波形中，使最后施加的脉冲信号以外的脉冲信号中的任一者的波高值为与其它的脉冲信号不同的值。

Liquid discharge head

Liquid discharge device

Printer operation for ejection of purging droplets of a printing fluid

Operation of a printer for printing an image is described herein. It is determined whether ejection of imaging droplets of a print fluid via a set of nozzles for printing an outstanding image portion is sufficient for preventing clogging of the set of nozzles. Upon determining that ejection of imaging droplets for printing the outstanding image portion is sufficient for preventing clogging of the set of nozzles, printing is performed by ejecting only imaging droplets of the print fluid via the set of nozzles. Upon determining that ejection of imaging droplets for printing the outstanding image portion is not sufficient for preventing clogging of the set of nozzles, a servicing procedure is to be executed of to eject purging droplets of the print fluid via the set of nozzles.

Inkjet printing apparatus and variable-density correction method

First, shading charts are printed on a surface of a recording medium. Then, a plurality of captured images is acquired for a region of the same density of the shading charts printed on the recording medium. At this time, the amounts of displacement in the position of the recording medium in the main scanning direction, which is the direction of arrangement of nozzles, are also detected. Then, one super-resolution image with a higher resolution than the captured images is generated on the basis of the captured images and the amounts of displacement in the position of the recording medium in the main scanning direction. Thereafter, a variable-density correction amount is calculated for each of the nozzles on the basis of the generated super-resolution image.

Apparatus for inspection droplet and method for inspection droplet

약액 검사 장치는 잉크젯 헤드로부터 토출되는 약액에 적어도 두 개의 레이저 광선들을 충돌시킴에 따라 발생되는 레이저 스케터링을 디텍팅하여 약액 상태를 검사하기 위한 것으로써, 상기 레이저 광선들이 하나의 상으로 수렴되는 수렴 지점이 상기 약액과 충돌되는 충돌 지점이 될 수 있게 정렬할 수 있도록 구비되는 정렬 어셈블리를 더 포함할 수 있다. 상기 정렬 어셈블리는 상기 레이저 광선들이 조사됨으로써 생성되는 평면 모양들을 확인할 수 있도록 구비되는 모양 확인부와, 상기 평면 모양들의 높이를 조절함으로써 상기 평면 모양들이 하나의 상으로 수렴될 수 있게 상기 모양 확인부의 높이를 조절하도록 구비되는 높이 조절부를 포함할 수 있다. The chemical liquid inspection apparatus detects laser scattering generated by colliding at least two laser beams with a chemical liquid discharged from an inkjet head and inspects the chemical liquid state, wherein the laser beams are converged into one phase It may further include an alignment assembly provided to align the point to be a collision point that collides with the chemical solution. The alignment assembly includes a shape checking unit provided to check the planar shapes generated by irradiating the laser beams, and a height of the shape checking part so that the planar shapes can be converged into one image by adjusting the heights of the planar shapes. It may include a height adjustment unit provided to adjust the.

Inkjet recording device

Method of dispensing liquid

A liquid dispensing device ( 10 ) having a drop ejection device ( 12 ) including an orifice ( 18 ) adapted for ejecting drops ( 20 ) therefrom above a particular turn-on-energy, a turn-on-energy detection device ( 28 ) positioned to receive turn-on-energy information from said ejected drops as a function of energy applied to the drop ejection device, and a controller ( 40 ) that receives the turn-on-energy information and conducts a mathematical operation on the turn-on-energy information to determine a drop volume of the drops ejected.

Resin printing apparatus

본 실시 예의 레진 코팅 장치는 베이스; 베이스 상측에 배치된 회전 스테이지; 회전 스테이지의 상면에 로딩된 서브스트레이트와 이격되고 서브스트레이트에 형성된 홀의 측면에 대해 사선방향으로 배치되며 레진을 노포하는 노즐; 및 노즐과 서브스트레이트에 연결되어 노즐과 서브스트레이트 사이에 전기작을 형성하는 고직류파워을 포함한다.