公开(公告)号：US20230097719A1

公开(公告)日：2023-03-30

申请号：US18059568

申请日：2022-11-29

Applicant: FUJIFILM Corporation

Inventor： Baku NISHIKAWA

IPC: B41J2/045 ,  B41J2/14

Abstract: Provided are a head device, an ink jet printing device, and a driving voltage adjustment method capable of adjusting a driving voltage corresponding to a target jetting amount and suppressing unevenness of printing density occurring between head modules. A dead device includes an ink jet head including a plurality of head modules, and a driving voltage supply device that includes a processor and supplies a driving voltage to the ink jet head, in which the processor acquires a module characteristic, acquires an ink characteristic of ink applied to printing, derives a first voltage coefficient for adjusting a driving voltage corresponding to a target jetting amount for each head module based on the module characteristic and the ink characteristic, and adjusts the driving voltage by applying the first voltage coefficient for each head module.

公开(公告)号：US20210237440A1

公开(公告)日：2021-08-05

申请号：US17233533

申请日：2021-04-18

Applicant: FUJIFILM Corporation

Inventor： Baku NISHIKAWA

IPC: B41J2/045

Abstract: A drive waveform acquisition unit that acquires a drive waveform, a drive voltage generation unit that generates the drive voltage, a jetting frequency setting unit that sets a jetting frequency on the basis of drop velocity information representing a relationship between the jetting frequency and a drop velocity in a single-shot, and a drive voltage supply unit that supplies the drive voltage to the jetting head are included. The jetting frequency setting unit sets a jetting frequency at which the drop velocity is a second velocity equal to or less than a first velocity in the drop velocity information as the jetting frequency of the jetting head.

公开(公告)号：US20170253023A1

公开(公告)日：2017-09-07

申请号：US15448598

申请日：2017-03-03

Applicant: FUJIFILM Corporation

Inventor： Baku NISHIKAWA

IPC: B41J2/045

CPC classification number: B41J2/0451 ,  B41J2/04586 ,  B41J2/18 ,  B41J2/2142 ,  B41J2/2146 ,  B41J11/009 ,  B41J29/38

Abstract: An image recording apparatus includes a recording head, a recording-position information obtaining unit configured to obtain recording position information of a plurality of recording elements a plurality of times at an interval of an arbitrary period, a recording-position chronological change information calculating unit configured to calculate chronological change information of the recording position for each recording element, a medium type specifying unit configured to specify a type of a medium using the chronological change information of the recording position for each recording element, and a parameter setting unit configured to automatically set at least either one of a recording parameter and an abnormality detection parameter in correspondence with the specified type of medium.

公开(公告)号：US20150124015A1

公开(公告)日：2015-05-07

申请号：US14553044

申请日：2014-11-25

Applicant: FUJIFILM Corporation

Inventor： Baku NISHIKAWA

IPC: B41J2/045

CPC classification number: B41J2/04541 ,  B41J2/04581 ,  B41J2/04586 ,  B41J2/04588 ,  B41J2/04596 ,  B41J2/04598 ,  B41J2/14233 ,  B41J2/155 ,  B41J2002/14459

Abstract: A drive apparatus for a liquid ejection head, includes a drive signal generating device for generating a drive signal to operate an ejection energy generating element provided so as to correspond to a nozzle of the liquid ejection head, the drive signal being supplied to the ejection energy generating element so that a liquid droplet is caused to be ejected from the nozzle, wherein: the drive signal includes a plurality of ejection pulses for performing a plurality of ejection operations during one recording period, in a remaining pulse sequence excluding a final pulse of the plurality of ejection pulses, a voltage amplitude of a subsequent pulse is smaller than a voltage amplitude of a preceding pulse, and the final pulse has a largest voltage amplitude, of the plurality of ejection pulses.

Abstract translation: 一种用于液体喷射头的驱动装置，包括：驱动信号发生装置，用于产生用于操作喷射能量产生元件的驱动信号，喷射能量产生元件设置成与液体喷射头的喷嘴相对应，驱动信号被提供给喷射能量 使得液滴从喷嘴喷出，其中：驱动信号包括多个喷射脉冲，用于在一个记录周期期间执行多个喷射操作，在除了最后脉冲之外的剩余脉冲序列中 多个喷射脉冲，后续脉冲的电压幅度小于先前脉冲的电压振幅，并且最终脉冲具有多个喷射脉冲的最大电压振幅。

公开(公告)号：US20250010609A1

公开(公告)日：2025-01-09

申请号：US18890767

申请日：2024-09-20

Applicant: FUJIFILM Corporation

Inventor： Baku NISHIKAWA

IPC: B41J2/045 ,  B41J2/14

Abstract: A jetting head control device supplies a non-printing oscillation voltage to which a non-printing oscillation waveform (342) is applied, to a nozzle in the non-printing period, and supplies a printing oscillation voltage to which a printing oscillation waveform (344) is applied, to a non-jetting nozzle that does not jet liquid in a printing period. In the non-printing oscillation waveform, a pulse width TW is (3/4)×TC

公开(公告)号：US20160121605A1

公开(公告)日：2016-05-05

申请号：US14994396

申请日：2016-01-13

Applicant: FUJIFILM CORPORATION

Inventor： Baku NISHIKAWA

IPC: B41J2/045

CPC classification number: B41J2/04541 ,  B41J2/04581 ,  B41J2/04586 ,  B41J2/04588 ,  B41J2/04596 ,  B41J2/04598 ,  B41J2/14233 ,  B41J2/155 ,  B41J2002/14459

Abstract: A drive apparatus for a liquid ejection head, includes a drive signal generating device for generating a drive signal to operate an ejection energy generating element provided so as to correspond to a nozzle of the liquid ejection head, the drive signal being supplied to the ejection energy generating element so that a liquid droplet is caused to be ejected from the nozzle, wherein: the drive signal includes a plurality of ejection pulses for performing a plurality of ejection operations during one recording period, in a remaining pulse sequence excluding a final pulse of the plurality of ejection pulses, a voltage amplitude of a subsequent pulse is smaller than a voltage amplitude of a preceding pulse, and the final pulse has a largest voltage amplitude, of the plurality of ejection pulses.

公开(公告)号：US20240198667A1

公开(公告)日：2024-06-20

申请号：US18522281

申请日：2023-11-29

Applicant: FUJIFILM Corporation

Inventor： Baku NISHIKAWA ,  Yuta Mizouchi ,  Kimito Katsuyama

IPC: B41J2/045

CPC classification number: B41J2/04588 ,  B41J2/04581

Abstract: A method of creating a head model that can accurately simulate behavior of a liquid ejection head, a drive waveform creation method of creating a proper drive waveform using the head model, and an information processing apparatus and a program for executing the methods are provided.
Provided is a method of creating a head model that simulates behavior of a liquid ejection head including a piezoelectric element, the head model being configured using a fluid analysis model, the method including, via one or more first processors, optimizing the head model based on learning data using data related to an actual flight shape in a case of ejecting liquid by applying each of a plurality of drive waveforms to the piezoelectric element using the liquid ejection head and the liquid ejected from the liquid ejection head as the learning data.

公开(公告)号：US20240198666A1

公开(公告)日：2024-06-20

申请号：US18522280

申请日：2023-11-29

Applicant: FUJIFILM Corporation

Inventor： Baku NISHIKAWA ,  Yuta MIZOUCHI ,  Yusuke WATADA

IPC: B41J2/045

CPC classification number: B41J2/04588 ,  B41J2/04535 ,  B41J2/04581

Abstract: A drive waveform creation method, an information processing apparatus, and a program that enable even a technician not having professional knowledge to efficiently create a drive waveform suitable for ejecting liquid to be used.
A method of creating a drive waveform to be used for driving a piezoelectric element of a liquid ejection head including the piezoelectric element includes, via one or more processors, predicting flight of liquid to be ejected by the liquid ejection head in a case of inputting an unknown drive waveform using a machine learning model that is trained through machine learning using data related to an actual flight shape of the liquid in a case where each of a plurality of drive waveforms is applied to the piezoelectric element using the liquid and the liquid ejection head, and determining a drive waveform suitable for ejecting the liquid based on the prediction of the flight.

公开(公告)号：US20210001628A1

公开(公告)日：2021-01-07

申请号：US17030279

申请日：2020-09-23

Applicant: FUJIFILM Corporation

Inventor： Yuichi OZAKI ,  Baku NISHIKAWA

IPC: B41J2/045

Abstract: A drive waveform acquisition unit that acquires a drive waveform; a drive voltage generation unit that generates a drive voltage; and a drive voltage supply unit that supplies the drive voltage are included. The drive waveform acquisition unit acquires an overflow waveform used to generate an overflow drive voltage. The drive voltage generation unit generates the overflow drive voltage including one or more overflow pulses corresponding to a period of 0.2 seconds or more and 90 seconds or less. The overflow pulses have a pulse width of 1.2 times or more and 1.8 times or less and an amplitude of 0.3 times or more and 0.8 times or less, and at least one of a rising period or a falling period of 0.3 times or less with respect to a jetting pulse.

公开(公告)号：US20130083107A1

公开(公告)日：2013-04-04

申请号：US13631051

申请日：2012-09-28

Applicant: FUJIFILM CORPORATION ,  FUJI XEROX CO., LTD.

Inventor： Baku NISHIKAWA ,  Toshinori ISHIYAMA

IPC: B41J29/38

CPC classification number: B41J2/0451 ,  B41J2/04581 ,  B41J2/04588

Abstract: According to the present invention, the occurrence of an ejection abnormality can be determined at an early stage by using a waveform for abnormal nozzle determination, before an image defect producing a visible density non-uniformity (stripe non-uniformity) occurs due to an ejection defect in an output image recorded by a drive signal having a recording waveform. Consequently, recording stability and throughput can both be achieved.

Abstract translation: 根据本发明，通过使用用于异常喷嘴确定的波形，可以在由于喷射而产生可见密度不均匀（条纹不均匀）的图像缺陷之前，可以在早期阶段确定喷射异常的发生 由具有记录波形的驱动信号记录的输出图像中的缺陷。 因此，可以实现记录稳定性和吞吐量。