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：US20150146120A1

公开(公告)日：2015-05-28

申请号：US14611705

申请日：2015-02-02

Applicant: FUJIFILM Corporation

Inventor： Noriaki MAIDA ,  Yuichi OZAKI

IPC: B41J2/165

CPC classification number: B41J2/16544 ,  B41J2/16535 ,  B41J2/16552 ,  B41J2/16588 ,  B41J2002/1655 ,  B41J2002/16591

Abstract: The present invention provides a nozzle face wiping device and an image recording device that can switch whether to wipe out a nozzle face by a simple mechanism. According to one mode of the present invention, it is possible to brake the running of the wiping web by the braking device on the upstream side (supply shaft side) of the pressure member. In a case where the running direction of the wiping web wound around the pressure member and the relative movement direction of the nozzle face are the same, it is possible to prevent the wiping web from being forcefully drawn out from the supply shaft by braking the running of the wiping web by the braking device. By this means, it is possible to wipe out the nozzle face from two directions.

Abstract translation: 本发明提供一种能够通过简单的机构切换是否擦拭喷嘴面的喷嘴面擦拭装置和图像记录装置。 根据本发明的一个方式，可以通过制动装置在压力部件的上游侧（供给轴侧）制动擦拭卷筒的运转。 在卷绕在压力部件上的擦拭纸幅的行进方向和喷嘴面的相对移动方向相同的情况下，可以防止擦拭纸幅从供给轴被强制地拉出， 的制动装置的擦拭幅材。 通过这种方式，可以从两个方向擦去喷嘴面。

公开(公告)号：US20230036673A1

公开(公告)日：2023-02-02

申请号：US17812161

申请日：2022-07-12

Applicant: FUJIFILM Corporation

Inventor： Yuichi OZAKI

IPC: B41J2/18 ,  B41J2/175

Abstract: Provided are a control device of an ink circulation device, a control method of an ink circulation device, a program, and a printing device that suppress a pressure fluctuation of an ink circulating in an ink jet head regardless of an operation state.
Parameters of a PID control of an upstream side pump that supplies an ink stored in an ink tank to an ink jet head are switched between a jetting state in which the ink is jetted from the ink jet head and a non-jetting state different from the jetting state, and in a case in which, in the upstream side pump in the non-jetting state, proportional gain is denoted by Kp1_in, integral gain is denoted by Ki1_in, and differential gain is denoted by Kd1_in, and, in the upstream side pump in the jetting state, proportional gain is denoted by Kp2_in, integral gain is denoted by Ki2_in, and differential gain is denoted by Kd2_in, relationships of Kp1_in Ki2_in, and Kd1_in

公开(公告)号：US20200079090A1

公开(公告)日：2020-03-12

申请号：US16683261

申请日：2019-11-14

Applicant: FUJIFILM Corporation

Inventor： Yuichi OZAKI ,  Makoto TAKEUCHI

IPC: B41J2/165

Abstract: Provided are a moisture retention device, a maintenance device, and a liquid jetting apparatus with which it is possible to avoid contact between moisture retention liquid stored in a cap and a nozzle surface. The moisture retention device includes the cap for moisture retention of the nozzle surface of a liquid jetting head, the cap includes a liquid retention portion (488D) in which moisture retention liquid is retained, the liquid retention portion is a housing of which an upper surface (488C) is open, and a wall (488B) of the housing is provided with an overflow starting point (510) having a structure that penetrates the wall.

公开(公告)号：US20160361925A1

公开(公告)日：2016-12-15

申请号：US15179071

申请日：2016-06-10

Applicant: FUJIFILM Corporation

Inventor： Yuichi OZAKI

IPC: B41J2/165

CPC classification number: B41J2/165 ,  B41J2/16552

Abstract: The moisturizing apparatus includes: a liquid retainer arranged at a position facing a nozzle surface of a liquid ejection head, the nozzle surface being inclined relative to a horizontal plane, the liquid retainer being divided, along a direction of an inclination, into an uppermost liquid chamber, a lowermost liquid chamber and a middle liquid chamber arranged between the uppermost and lowermost liquid chambers, to store a moisturizer; a supply device which supplies the moisturizer to a liquid supply port provided in the middle liquid chamber, the supply device passing the moisturizer from the middle liquid chamber into the lowermost liquid chamber; and a discharge device which discharges the moisturizer from a waste liquid port provided in the middle liquid chamber, wherein the uppermost liquid chamber and a gas space in the lowermost liquid chamber are linked through.

Abstract translation: 保湿装置包括：液体保持器，其布置在面向液体喷射头的喷嘴表面的位置处，喷嘴表面相对于水平面倾斜，液体保持器沿着倾斜方向被分割成最上面的液体 室，最下液室和布置在最上液室和最下液室之间的中液室，用于储存保湿剂; 供应装置，其将保湿剂供应到设置在中间液体室中的液体供应口，供应装置将保湿剂从中间液体室传递到最下面的液体室中; 以及从设置在中间液体室中的废液口排出保湿剂的排出装置，其中最上面的液体室和最下面的液体室中的气体空间被连通。

公开(公告)号：US20220219458A1

公开(公告)日：2022-07-14

申请号：US17707889

申请日：2022-03-29

Applicant: FUJIFILM Corporation

Inventor： Yuichi OZAKI ,  Jun YAMANOBE

IPC: B41J2/165

Abstract: To provide a head device, a liquid jetting apparatus, and a head maintenance method with which it is possible to suppress a decrease in performance of a liquid-repellent film on a nozzle surface that is caused by a wiping process with respect to the nozzle surface. Provided is a head device including an ink jet head (10) in which a liquid-repellent film (10B) is formed on a nozzle surface (10A) and a head control unit. The head control unit applies a negative pressure to liquid in a nozzle, performs a non-jetting driving operation of causing the liquid in the nozzle to vibrate without being jetted, and stops the non-jetting driving operation for a wiping target nozzle (12A) with which a wiping member (22) to be used in a wiping process comes into contact in a case where the wiping process with respect to the nozzle surface is to be performed.

公开(公告)号：US20200215822A1

公开(公告)日：2020-07-09

申请号：US16824716

申请日：2020-03-20

Applicant: FUJIFILM Corporation

Inventor： Yuichi OZAKI ,  Takuma NAKANO

IPC: B41J2/165

Abstract: Provided are a liquid jetting device, a liquid jetting head cleaning device, and a liquid jetting head cleaning method, in which a nozzle surface is cleaned without a liquid infiltrating into a gap of a liquid jetting head having a gap between head modules adjacent to each other.After performing pressurization purging for pressurizing an inside of a liquid jetting head (32) that is the liquid jetting head (32), which jets a liquid from a nozzle (202) disposed on a nozzle surface (33), is formed by a plurality of head modules (200), and has a gap (G) between the head modules adjacent to each other, to discharge the liquid from the nozzle (202), a long wiping web (104) in a dry state abuts against the nozzle surface (33) of the liquid jetting head (32) at a pressing force of 0 kPa or more and 15 kPa or less, and the wiping web (104) is transported with respect to the liquid jetting head (32) in a web transporting direction to wipe the nozzle surface (33).

公开(公告)号：US20150191018A1

公开(公告)日：2015-07-09

申请号：US14665520

申请日：2015-03-23

Applicant: FUJIFILM Corporation

Inventor： Yuichi OZAKI

IPC: B41J2/165

CPC classification number: B41J2/16535 ,  B41J2/16588 ,  B41J2002/1655 ,  B41J2002/16558 ,  B41J2002/16591

Abstract: An inkjet head cleaning device for an inkjet head having a nozzle surface on which nozzles for ejecting ink are arranged, includes a wiping member traveling unit allowing a wiping member of elongated shape having absorbency to travel along a conveying path in a longitudinal direction, a cleaning liquid supply unit supplying a cleaning liquid to the wiping member, a pressing unit pressing and bringing the wiping member supplied with the cleaning liquid to and into contact with the nozzle surface, and a sliding unit relatively sliding the wiping member and the nozzle surface, in which the nozzle surface is cleaned by putting a state of a mixed liquid of the ink and the cleaning liquid at a contacting portion between the wiping member and the nozzle surface into a state satisfying a predetermined relationship represented by a relationship between a surface tension and viscosity of the mixed liquid.

Abstract translation: 一种用于喷墨头的喷墨头清洁装置，其具有喷嘴表面，喷嘴用于喷射墨水，喷墨头清洁装置包括：擦拭部件行进单元，其允许具有吸收性的细长形状的擦拭部件沿着纵向方向沿输送路径行进， 向擦拭部件供给清洗液的液体供给单元，将供给了清洗液的擦拭部件按压并与喷嘴面接触的按压部，以及使擦拭部件和喷嘴面相对滑动的滑动部， 通过将墨水和清洗液的混合液体的状态置于擦拭部件和喷嘴表面之间的接触部分处，将喷嘴表面清洁为满足由表面张力和粘度之间的关系表示的预定关系的状态 的混合液体。

公开(公告)号：US20220297441A1

公开(公告)日：2022-09-22

申请号：US17835174

申请日：2022-06-08

Applicant: FUJIFILM Corporation

Inventor： Yuichi OZAKI

IPC: B41J2/18 ,  B41J2/165

Abstract: A printing device includes an ink jet head that jets an ink from a jetting surface, an ink circulation flow passage through which the ink circulates, a moisturizing unit that moisturizes the jetting surface in an ink circulation stop period in which circulation of the ink in the ink circulation flow passage is stopped, a reception unit that receives a set input value of the ink circulation stop period, and a controller that controls a back pressure of the ink jet head at a start of the ink circulation stop period in accordance with the set input value of the ink circulation stop period received by the reception unit.

公开(公告)号：US20170266964A1

公开(公告)日：2017-09-21

申请号：US15460211

申请日：2017-03-15

Applicant: FUJIFILM Corporation

Inventor： Kazumasa HATTORI ,  Yuichi OZAKI ,  Tsutomu KUSAKARI

IPC: B41J2/045

CPC classification number: B41J2/04586 ,  B41J2/165 ,  B41J2/16508 ,  B41J2002/16573

Abstract: A control method for an inkjet recording apparatus includes: a head housing step of housing in a head housing part an inkjet head having a nozzle surface on which nozzles configured to eject an ink are formed; a humidity acquiring step of acquiring a relative humidity of the nozzle surface of the inkjet head housed in the head housing part; and a temperature and humidity regulating step of performing at least one of a humidification process and a dehumidification process according to the relative humidity of the nozzle surface acquired in by the humidity acquiring step to set the relative humidity of the nozzle surface to 37% RH or more and 65% RH or less.