公开(公告)号：US20240316937A1

公开(公告)日：2024-09-26

申请号：US18736501

申请日：2024-06-06

Applicant: FUJIFILM Corporation

Inventor： Kazumasa HATTORI

IPC: B41J2/165

CPC classification number: B41J2/16552 ,  B41J2002/16558

Abstract: Provided is a printing device that suppresses remaining of a mixture of an ink and a washing solution in a case of washing a print head. In a case where a length of a nozzle surface of a print head, which jets the ink from a plurality of nozzles disposed on a nozzle surface, in a first direction is defined as Lp, a length of a nozzle region of the nozzle surface, which has liquid repellency, in the first direction is defined as Ln, and a length of the washing solution holding surface of a washing solution holding member, which washes the nozzle surface facing the washing solution holding surface with the washing solution applied to the washing solution holding surface, in the first direction is defined as Lc, a relationship of Ln

公开(公告)号：US20140176655A1

公开(公告)日：2014-06-26

申请号：US14190907

申请日：2014-02-26

Applicant: FUJIFILM CORPORATION

Inventor： Kazumasa HATTORI

IPC: B41J13/08 ,  B65H5/08 ,  B65H3/10

CPC classification number: B41J13/08 ,  B41J13/226 ,  B65H3/0833 ,  B65H3/10 ,  B65H5/062 ,  B65H5/085 ,  B65H11/007 ,  B65H29/041 ,  B65H2301/517 ,  B65H2801/15 ,  B65H2801/21

Abstract: A conveyance apparatus is provided with a conveyance body that suction adheres and conveys a sheet form medium, and a pressing body that presses the sheet form medium against a suction adhesion face of the conveyance body that suction adheres the sheet form medium, the paper press roller pressing more strongly portions that are present at plural locations along the suction adhesion face width direction where the suction adhesion force of the suction adhesion face is weak than the pressing body presses other portions. The pressing body of the conveyance apparatus includes large diameter portions that press the sheet form medium at plural locations along the width direction, thereby preventing lift-off of the sheet form medium at suction hole unformed regions that are portions where the suction adhesion force to the suction adhesion face of the conveyance body is weaker than in the vicinity thereof.

Abstract translation: 输送装置设有吸附粘合并输送片状介质的输送体，以及将片状介质压靠在输送体的吸附粘合面上的压力体，该吸附粘合面吸附粘合片状介质，纸压辊 在吸附粘合面的吸附粘合力弱于按压体的吸附粘合面宽度方向的多个位置上存在的较强的部分按压其他部分。 输送装置的按压体包括沿着宽度方向在多个位置挤压片状介质的大直径部分，从而防止片状介质在吸入孔未成形区域处的剥离，该非成形区域是对 输送体的吸附面较弱。

公开(公告)号：US20210221139A1

公开(公告)日：2021-07-22

申请号：US17223009

申请日：2021-04-06

Applicant: FUJIFILM Corporation

Inventor： Kazumasa HATTORI

IPC: B41J2/165

Abstract: Provided is a recording head cleaning device, a recording head cleaning method, and a recording device, with which a cleaning liquid from a nozzle is prevented from being mixed and a nozzle surface is cleaned. The problem is solved with a recording head cleaning device including a cleaning liquid holding unit that has a cleaning liquid holding surface, a cleaning liquid applying portion that applies a cleaning liquid to the cleaning liquid holding surface, a cleaning unit that cleans a nozzle surface of a recording head, in which a nozzle jetting an ink is disposed, with the cleaning liquid held by the cleaning liquid holding surface by making the cleaning liquid holding surface and the nozzle surface face each other, the nozzle surface with the cleaning liquid held by the cleaning liquid holding surface, and a back pressure control unit that sets a back pressure of the nozzle in a case of cleaning the nozzle surface to −800 pascals to −200 pascals.

公开(公告)号：US20170267005A1

公开(公告)日：2017-09-21

申请号：US15456579

申请日：2017-03-13

Applicant: FUJIFILM Corporation

Inventor： Kazumasa HATTORI

IPC: B41J29/393 ,  B41J2/21

CPC classification number: B41J29/393 ,  B41J2/0451 ,  B41J2/04558 ,  B41J2/04586 ,  B41J2/2132 ,  B41J2/2135 ,  B41J2/2142 ,  B41J2/2146 ,  B41J29/38

Abstract: A control method for a printing apparatus includes: an image defect detecting step of detecting an ejection curve amount of a nozzle in an inkjet head and an image defect from a recordable medium on a surface of which an image is recorded by an image recording part provided with the inkjet head having a plurality of nozzles, and a stamp step of attaching a stamp indicating presence of the image defect on the recordable medium by a stamping device in a case where the image defect is detected, the stamp step differentiating an attachment form of the stamp by the stamping device in accordance with a magnitude of the ejection curve amount of the nozzle.

公开(公告)号：US20140063101A1

公开(公告)日：2014-03-06

申请号：US13958236

申请日：2013-08-02

Applicant: FUJIFILM CORPORATION

Inventor： Kazumasa HATTORI ,  Jun YAMANOBE

IPC: B41J2/12

CPC classification number: B41J2/12 ,  B41J2/2142

Abstract: An image forming apparatus includes a discharge disabling unit configured to disable a discharge operation of a defective nozzle, which is in a defective discharge state, among a plurality of nozzles configured to discharge liquid droplets to a recording medium, when a value obtained by quantifying a degree of defective state of the defective nozzle is greater than a discharge disable threshold value; a complement unit configured to complement an image defect using two nozzles on either side of the defective nozzle of which discharge operation is disabled; and a threshold value change unit configured to change the discharge disable threshold value depending on a discharge order between the nozzles which complement the image defect and nozzles adjacent to the nozzles which complement the image defect.

Abstract translation: 图像形成装置包括：排出禁止单元，被配置为在被配置为将液滴喷射到记录介质上的多个喷嘴中的不良喷出状态下的不良喷嘴的排出操作时，当通过量化 缺陷喷嘴的缺陷状态程度大于放电禁止阈值; 补充单元，被配置为使用在其中禁用放电操作的缺陷喷嘴的两侧上的两个喷嘴来补偿图像缺陷; 以及阈值改变单元，被配置为根据补充图像缺陷的喷嘴与补充图像缺陷的喷嘴相邻的喷嘴之间的排出顺序来改变放电禁止阈值。

公开(公告)号：US20230330994A1

公开(公告)日：2023-10-19

申请号：US18336018

申请日：2023-06-16

Applicant: FUJIFILM Corporation

Inventor： Kazumasa HATTORI

IPC: B41J2/165

CPC classification number: B41J2/16544 ,  B41J2/16552 ,  B41J2002/16558 ,  B41J2002/16502 ,  B41J2002/1657 ,  B41J2002/16576

Abstract: Provided are a head maintenance system, a printing system, and a head maintenance method with which preferable washing of a nozzle surface can be realized and a damage to the nozzle surface can be suppressed. The head maintenance system includes: a wiping device (3) including a wiping sheet (10) for wiping a nozzle surface (52) of an ink jet head (50); a relative movement device (2, 3) that relatively moves the ink jet head and the wiping sheet; and a pressing device (18, 56) that presses the wiping sheet against the nozzle surface, in which the wiping device includes the wiping sheet having a value of linearity of compression in a range of 0.3 or more and less than 0.6, the linearity of compression being measured using a compression tester.

公开(公告)号：US20220080723A1

公开(公告)日：2022-03-17

申请号：US17531793

申请日：2021-11-21

Applicant: FUJIFILM Corporation

Inventor： Kazumasa HATTORI

IPC: B41J2/045 ,  B41J2/145

Abstract: There are provided an ink jet printing apparatus, a dummy jet method, and a program which can execute a dummy jet at a dummy jet execution timing in which a use status of a nozzle is taken into consideration. A non-jettable period and a required jetting amount of an ink jet head are set for each nozzle, and in a case where the dummy jet for a dummy jet execution nozzle is executed with a jetting amount insufficient for the required jetting amount, at a determination timing of determining the necessity of execution of the dummy jet, for the nozzle of which a total jetting amount in the non-jettable period is less than the required jetting amount, the dummy jet is not executed in a case where a period from a printing start to a next jetting timing is equal to or greater than a period obtained by adding a determination interval to a period from the printing start to the determination timing.

公开(公告)号：US20210002502A1

公开(公告)日：2021-01-07

申请号：US17024724

申请日：2020-09-18

Applicant: FUJIFILM CORPORATION

Inventor： Masaharu KAWAI ,  Ryuji SHINOHARA ,  Kazumasa HATTORI ,  Akinori SUGISHIMA

IPC: C09D11/322 ,  C09D11/38 ,  B41J11/00

Abstract: An embodiment of the present invention provides an inkjet ink composition including water, a dispersant, white inorganic pigment particles having an average primary particle diameter of 150 nm to 400 nm, and resin particles A having a glass transition temperature of higher than 120° C.; an image recording method carried out using the inkjet ink composition; and an image recorded material including a solidified material of the inkjet ink composition.

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.