Rapid ink-charging of a dry ink discharge nozzle

Номер патента: US20120282840A1. Автор: Conor F. Madigan, Eliyahu Vronsky. Владелец: Kateeva Inc. Дата публикации: 08-11-2012.
The present teachings relate to methods and apparatus for depositing one or more materials (e.g., one or more films, such as one or more solids) on one or more substrates, which may form part of an OLED or other type(s) of display. In some embodiments, the disclosure relates to apparatus and methods for depositing ink on one or more substrates. The apparatus can include, for example, one or more chambers for receiving ink, and plural orifices configured for ejecting droplets of the ink. The ejected droplets of ink can be received at unique, spaced-apart locations. In some embodiments, a single liquid ink-holding chamber, which includes plural orifices (e.g., three), receives ink in liquid form having a plurality of dissolved or suspended particles, and droplets of the ink are ejected substantially simultaneously to respective, spaced-apart locations on one or more substrates.

Printing apparatus control method for printing apparatus

Номер патента: US20130176357A1. Автор: Hiroshi Tajika, Jun Yasutani. Владелец: Canon Inc. Дата публикации: 11-07-2013.
Provided is an printing apparatus and temperature detecting method that can accurately obtain temperature of a printing element substrate and output a high-quality image at high resolution and high speed. For this purpose, a first temperature sensor outputting signals through a first output line and a second temperature sensor outputting signals through a second output line that is longer than the first output line are provided on the printing element substrate. In addition, the switch between the case of using detected temperatures obtained from both of the first temperature sensor and the second temperature sensor to calculate the temperature of the printing element substrate, and the case of using only detected temperature obtained from the first temperature sensor to calculate the temperature of a printing element substrate is made. On the basis of this, it is avoided that inaccurate temperature of a printing element substrate is obtained caused of noises.

Inkjet printing apparatus and inkjet printing method

Номер патента: US20130257944A1. Автор: Jun Yasutani. Владелец: Canon Inc. Дата публикации: 03-10-2013.
By performing an average process of a result of a plurality of times of samplings by the temperature sensor provided on a printing element substrate, temperature of the printing element substrate is obtained. In this case, the number of times of samplings is determined on the basis of a simultaneously driven number in the printing element substrate. This enables the number of times of samplings for the temperature sensor to be determined depending on a simultaneously driven number at each time, and therefore while suppressing an influence of noise, the temperature of the printing element substrate can be measured in a highly reliable state where there is no separation from an actual temperature.

DECODERS TO ACTIVATE FLUIDIC ACTUATORS FOR SENSE MEASUREMENTS

Номер патента: US20220001667A1. Автор: ANDERSON Daryl E., Martin Eric T.. Владелец: . Дата публикации: 06-01-2022.
In some examples, a fluid dispensing device includes a plurality of fluidic actuators and a decoder to detect that a first fluidic actuator is to be activated, and detect that a sense measurement is to be performed. In response to detecting that the first fluidic actuator is to be activated and the sense measurement is to be performed, the decoder is to suppress activation of the first fluidic actuator at a first time, and activate the first fluidic actuator at a second time corresponding to a sense measurement interval to perform the sense measurement of the first fluidic actuator. 1. A fluid dispensing device comprising:a plurality of fluidic actuators; and detect that a first fluidic actuator is to be activated;', 'detect that a sense measurement is to be performed; and', suppress activation of the first fluidic actuator at a first time, and', 'activate the first fluidic actuator at a second time corresponding to a sense measurement interval to perform the sense measurement of the first fluidic actuator., 'in response to detecting that the first fluidic actuator is to be activated and the sense measurement is to be performed], 'a decoder to2. The fluid dispensing device of claim 1 , wherein the detecting that the sense measurement is to be performed comprises detecting that a sense measurement indicator is set active specifying that the sense measurement is to be performed for the first fluidic actuator.3. The fluid dispensing device of claim 1 , wherein the detecting that the sense measurement is to be performed comprises detecting that a sense measurement indicator is set active specifying that the sense measurement is to be performed for a fluidic actuator of a group of fluidic actuators including the first fluidic actuator.4. The fluid dispensing device of claim 3 , wherein the group of fluidic actuators are associated with respective activation intervals associated with respective different addresses claim 3 , and wherein the suppressing of the activation of ...

Element substrate, printhead, and printing apparatus

Номер патента: US20150002566A1. Автор: Nobuyuki Hirayama, Ryo Kasai, Tomoko Kudo. Владелец: Canon Inc. Дата публикации: 01-01-2015.
An embodiment of this invention relates to an element substrate that implements size reduction of the element substrate and simplification of the arrangement as well as a highly-reliable print operation, a printhead using the same, and a printing apparatus including the printhead. In the element substrate according to this embodiment, the slope of a ramp wave is changed to generate a plurality of pulses using one reference voltage. The slope of the ramp wave can be changed by changing the mirror ratio or the capacitance of a comparator as well as by changing the resistance of a DAC.

Printing apparatus and printing method

Номер патента: US20140104336A1. Автор: Hidenori Usuda, Mitsuaki YOSHIZAWA, Shinichi Kamoshida. Владелец: Seiko Epson Corp. Дата публикации: 17-04-2014.
A printing apparatus which prints an image on a medium, including a head which discharges ink droplets from nozzles, wherein the medium is transparent, two pieces of image data are prepared, one piece of image data is selected from the two pieces of image data to set the selected image data to one of a first image and a second image, the other piece of image data is set to the other of the first image and the second image, the image data set to the first image is subjected to a processing to be mirror image data, and the head prints the mirror image of the first image on the medium, prints a background image on the mirror image of the first image, and prints a real image of the second image on the background image.

FIRE PULSE CONTROL CIRCUIT HAVING PULSE WIDTH ADJUSTMENT RANGE

Номер патента: US20220040975A1. Автор: Anderson Daryl E, Martin Eric. Владелец: Hewlett-Packard Development Company, L.P.. Дата публикации: 10-02-2022.
A fire pulse control circuit for a fluidic die includes input logic to receive a series of zone temperatures, each corresponding to a different zone of the fluidic die, each zone having a corresponding fire pulse having a width corresponding to a pulse temperature, the width adjustable from a minimum width corresponding to a maximum pulse temperature to a maximum width corresponding to a minimum pulse temperature. For each zone temperature, adjustment logic outputs a zone adjustment signal to decrease the fire pulse width of the corresponding zone if the zone temperature is greater than the pulse temperature and the pulse temperature is less than the maximum pulse temperature, and outputs a zone adjustment signal to increase the fire pulse width of the corresponding zone if the zone temperature is less than the pulse temperature and the pulse temperature is greater than the minimum pulse temperature. 1. A fire pulse control circuit for a fluidic die , comprising:input logic to receive a series of zone temperatures, each zone temperature corresponding to a different zone of the fluidic die, each zone having a corresponding fire pulse having a width corresponding to a pulse temperature, the width adjustable from a minimum width corresponding to a maximum pulse temperature to a maximum width corresponding to a minimum pulse temperature; and output a zone adjustment signal to direct a decrease of the fire pulse width of the corresponding zone if the zone temperature is greater than the pulse temperature and the pulse temperature is less than the maximum pulse temperature; and', 'output a zone adjustment signal to direct an increase of the fire pulse width of the corresponding zone if the zone temperature is less than the pulse temperature and the pulse temperature is greater than the minimum pulse temperature., 'adjustment logic, for each zone temperature, to2. The fire pulse control circuit of claim 1 , the adjust logic claim 1 , for each zone temperature claim 1 , to ...

FIRE PULSE WIDTH ADJUSTMENT

Номер патента: US20190030888A1. Автор: Cumbie Michael W., Esterri Pere, Korthuis Vincent C., Linn Scott A, Martin Eric T. Владелец: Hewlett-Packard Development Company, L.P.. Дата публикации: 31-01-2019.
First electronics may determine a count of bubble jet resistors to be fired by a fire pulse group. A fire pulse generator may generate a fire pulse train for bubble jet resistors, the fire pulse train comprising a precursor pulse and a firing pulse separated by a dead time. Second electronics may adjust a width of the fire pulse for the bubble jet resistors of the fire pulse group by maintaining a first edge of the fire pulse relative to the precursor pulse and adjusting a second edge of the fire pulse relative to the precursor pulse based upon the determined count for the fire pulse group. 1. An apparatus comprising:a fire pulse generator to generate a fire pulse train for bubble jet resistors, the fire pulse train comprising a precursor pulse and a firing pulse separated by a dead time;first electronics to determine a count of bubble jet resistors to be fired by a fire pulse group; andsecond electronics to adjust a width of the fire pulse for the bubble jet resistors of the fire pulse group by maintaining a first edge of the fire pulse relative to the precursor pulse and adjusting a second edge of the fire pulse relative to the precursor pulse based upon the determined count for the fire pulse group.2. The apparatus of further comprising a print controller claim 1 , the print controller to generate the fire pulse group claim 1 , wherein the print controller comprises the first electronics and the second electronics.3. The apparatus of claim 2 , wherein the fire pulse group generated by the print controller comprises data bits indicating the adjustment of the second edge of the fire pulse relative to the precursor pulse.4. The apparatus of claim 1 , wherein the second edge is a leading edge of the fire pulse.5. The apparatus of claim 4 , wherein the second electronics equally adjusts the leading edge of each fire pulse of the fire pulse group based upon the determined count for the fire pulse group.6. The apparatus of claim 1 , and the second edge is a trailing ...

ENHANCING TEMPERATURE DISTRIBUTION UNIFORMITY ACROSS A PRINTER DIE

Номер патента: US20170043574A1. Автор: Feinn James A, Holstun Clayton L, Ronk Kelly. Владелец: Hewlett-Packard Development Company, L.P.. Дата публикации: 16-02-2017.
According to an example, in a method for enhancing temperature distribution uniformity across a printer die, in which the printer die includes a plurality of drop generators arranged in a plurality of columns, a warming map that identifies the drop generators of the plurality of drop generators that are to be supplied with warming pulses to enhance temperature distribution uniformity across the printer die may be accessed. The warming map may identify a non-uniform distribution of the drop generators across a column of the plurality of columns. In addition, the warming map may be implemented to supply the drop generators identified in the warming map as the drop generators that are to receive the warming pulses. 1. A method for enhancing temperature distribution uniformity across a printer die , wherein the printer die comprises a plurality of drop generators arranged in a plurality of columns , said method comprising:accessing a warming map that identifies the drop generators of the plurality of drop generators that are to be supplied with warming pulses to enhance temperature distribution uniformity across the printer die, wherein the warming map identifies a non-uniform distribution of the drop generators across a column of the plurality of columns; andimplementing the warming map to supply the drop generators identified in the warming map as the drop generators that are to receive the warming pulses.2. The method according to claim 1 , wherein the printer die comprises a first end claim 1 , a second end claim 1 , and a middle section claim 1 , and wherein the non-uniform distribution of the drop generators includes a larger number of the drop generators near the first end and the second end as compared with the middle section.3. The method according to claim 2 , wherein the non-uniform distribution of the drop generators includes a distribution of the drop generators that includes only the drop generators located at the first end and the second end.4. The method ...

DRIVE-WAVEFORM DETERMINATION METHOD, NON-TRANSITORY COMPUTER-READABLE STORAGE MEDIUM STORING DRIVE-WAVEFORM DETERMINATION PROGRAM, LIQUID DISCHARGING APPARATUS, AND DRIVE-WAVEFORM DETERMINATION SYSTEM

Номер патента: US20220063268A1. Автор: KATAKURA Takahiro, MURAYAMA Toshiro, TOYOFUKU Atsushi. Владелец: . Дата публикации: 03-03-2022.
A drive-waveform determination method determines a waveform of a first drive pulse to be applied to a drive element included in a first liquid discharging head that discharges liquid. The drive-waveform determination method includes: a first step of obtaining second waveform information regarding a waveform of a second drive pulse to be applied to a drive element included in a second liquid discharging head that discharges liquid; and a second step of determining the waveform of the first drive pulse, based on the second waveform information. 1. A drive-waveform determination method for determining a waveform of a first drive pulse to be applied to a drive element included in a first liquid discharging head that discharges liquid , the drive-waveform determination method comprising:a first step of obtaining second waveform information regarding a waveform of a second drive pulse to be applied to a drive element included in a second liquid discharging head that discharges liquid; anda second step of determining the waveform of the first drive pulse, based on the second waveform information.2. The drive-waveform determination method according to claim 1 , whereinin the second step, the waveform of the first drive pulse is determined based on waveform candidate information indicating one or more waveform candidates of the first drive pulse and the second waveform information.3. The drive-waveform determination method according to claim 2 , whereinthe second waveform information includes information indicating a waveform non-candidate of the second drive pulse, the waveform non-candidate not being a waveform candidate of the second drive pulse.4. The drive-waveform determination method according to claim 3 , whereinin the second step, the waveform of the first drive pulse is determined using information obtained by excluding a waveform candidate that is included in the one or more waveform candidates of the first drive pulse and that corresponds to the waveform non- ...