公开(公告)号：US20210402765A1

公开(公告)日：2021-12-30

申请号：US17354489

申请日：2021-06-22

Applicant: CANON KABUSHIKI KAISHA

Inventor： Keiji Tomizawa ,  Shuzo Iwanaga ,  Akiko Hammura ,  Yoshihiro Hamada

IPC: B41J2/14 ,  B41J2/16

Abstract: In a liquid ejection head in which ejection modules are arrayed on a flow path forming member, each ejection module includes a recording element substrate provided on a support member. The recording element substrate includes a liquid supply channel, a liquid collection channel, and ejection ports. The support member includes supply-side liquid communication ports communicating with the liquid supply channel and collection-side liquid communication ports communicating with the liquid collection channel. The supply-side liquid communication ports and the collection-side liquid communication ports are alternately provided along the direction in which the ejection modules are arrayed. The closest pair of liquid communication ports in the adjacent ends of two adjacent ejection modules are both supply-side or collection-side liquid communication ports.

公开(公告)号：US12145359B2

公开(公告)日：2024-11-19

申请号：US17858162

申请日：2022-07-06

Applicant: CANON KABUSHIKI KAISHA

Inventor： Yoshihiro Hamada ,  Tomoki Ishiwata ,  So Aizawa ,  Keiji Tomizawa

IPC: B41J2/045 ,  B41J2/14

Abstract: An aspect of the present disclosure is a liquid ejection apparatus including: a liquid ejection head including a conversion element that generates energy required to eject liquid, a first protection layer that blocks contact between the conversion element and the liquid, a second protection layer that partially covers the first protection layer and functions as a first electrode, a second electrode that is electrically connected to the first electrode through the liquid, and an ejection port that ejects the liquid, and a control unit configured to control a potential difference between the first electrode and the second electrode in printing to a predetermined value by changing at least one of potentials of the first electrode and the second electrode. The control unit sets the potential difference based on at least one of a condition and a configuration of the liquid ejection head.

公开(公告)号：US20170021621A1

公开(公告)日：2017-01-26

申请号：US15215044

申请日：2016-07-20

Applicant: CANON KABUSHIKI KAISHA

Inventor： Yoshihiro Hamada ,  Masaki Oikawa ,  Hiroshi Yamada ,  Atsushi Omura ,  Takuma Kodoi ,  Tomotsugu Kuroda ,  Tomoyuki Tenkawa ,  Monta Matsui

IPC: B41J2/14

CPC classification number: B41J2/1433 ,  B41J2/14016 ,  B41J2/1404 ,  B41J2/14145 ,  B41J2/14201 ,  B41J2002/14419 ,  B41J2202/07

Abstract: A liquid discharge head includes a print element substrate provided with discharge ports, through which liquid is discharged; and a support member having a liquid chamber, which is provided with a communicating opening that communicates with the discharge ports, wherein the liquid chamber has a first surface provided with the communicating opening, and a second surface facing the first surface, the second surface is provided with a buffer chamber, which is a hollow space for storing gas, and the buffer chamber has, in the second surface, an opening having a projecting portion projecting toward the inner side of the opening.

Abstract translation: 液体排出头包括设置有排出口的打印元件基板，液体通过该排出口排出; 以及具有液体室的支撑构件，其设置有与排出口连通的连通开口，其中所述液体室具有设置有所述连通开口的第一表面和面向所述第一表面的第二表面，所述第二表面是 设置有缓冲室，该缓冲室是用于储存气体的中空空间，缓冲室在第二表面中具有一个开口，该开口具有向开口内侧突出的突出部分。

公开(公告)号：US20150239240A1

公开(公告)日：2015-08-27

申请号：US14627612

申请日：2015-02-20

Applicant: CANON KABUSHIKI KAISHA

Inventor： Yoshihiro Hamada ,  Michinari Mizutani ,  Yasunori Takei ,  Toshikazu Nagatsuka

IPC: B41J2/045 ,  B41J2/14

CPC classification number: B41J2/04563 ,  B41J2/0458 ,  B41J2/04591 ,  B41J2/04598

Abstract: Provided are a liquid ejecting method, a liquid ejecting device, and a liquid ejecting system which can avoid damage of an electro-thermal conversion element caused by cavitation and can prolong a life thereof even in a case that handling with a configuration of an ejecting port is difficult. For that purpose, ejection is performed for a low-duty region by controlling such that variation in an ejection speed is made smaller, and ejection is performed for a high-duty region by controlling such that variation in the ejection speed is made larger.

Abstract translation: 提供一种液体喷射方法，液体喷射装置和液体喷射系统，其可以避免由气穴引起的电热转换元件的损坏，并且即使在用喷射口的构造进行处理的情况下也能够延长其寿命 很难 为此，通过控制使排出速度的变化减小，通过控制使得喷射速度的变化较大来进行喷射，对低功率区域进行喷射。

公开(公告)号：US08833901B2

公开(公告)日：2014-09-16

申请号：US13749346

申请日：2013-01-24

Applicant: Canon Kabushiki Kaisha

Inventor： Yoshihiro Hamada ,  Tadayoshi Inamoto ,  Isao Imamura ,  Hiroki Kihara

IPC: B41J2/01 ,  B41J2/14 ,  H01L21/02

CPC classification number: B41J2/01 ,  B41J2/14024 ,  B41J2/14072 ,  H01L21/02126

Abstract: A liquid ejection head includes: a chip including a substrate having an energy generating element, an ejection orifice member, and an electrode terminal; an electric wiring board; a support member for supporting the wiring board, the support member having an opening surrounding the chip; a chip periphery sealing member which fills a gap between the chip and the opening; and an electrically connecting portion sealing member disposed in contact with the chip periphery sealing member and which covers an electrically connecting portion between the chip and the electric wiring board. The electrically connecting portion sealing member is a cured product of a material containing filler. The chip periphery sealing member is a cured product of a material containing at least one of specific siloxanes. The chip periphery sealing member and the electrically connecting portion sealing member has a difference in coefficient of linear expansion of 50 ppm/° C. or more.

Abstract translation: 液体喷射头包括：包括具有能量产生元件的基板，喷射孔构件和电极端子的芯片; 电气布线板; 用于支撑所述布线板的支撑构件，所述支撑构件具有围绕所述芯片的开口; 填充芯片和开口之间的间隙的芯片周边密封构件; 以及电连接部密封部件，其与所述芯片周边密封部件接触地设置，并且覆盖所述芯片和所述电气布线板之间的电连接部。 电连接部密封部件是含有填料的材料的固化物。 芯片周边密封构件是含有至少一种特定硅氧烷的材料的固化产物。 芯片周边密封构件和电连接部密封构件的线性膨胀系数差为50ppm /℃以上。

公开(公告)号：US10987921B2

公开(公告)日：2021-04-27

申请号：US16354852

申请日：2019-03-15

Applicant: CANON KABUSHIKI KAISHA

Inventor： Ayako Iwasaki ,  Yoshiyuki Nakagawa ,  Yoshihiro Hamada ,  Masashi Hayashi ,  Kentaro Muro ,  Yutaka Kano ,  Takahide Takeishi

IPC: B41J2/045 ,  B41J2/18 ,  B41J2/175 ,  B41J2/14

Abstract: An image forming apparatus 101 capable of performing printing with a high image quality, and a control method of the image forming apparatus 101 are provided. For this purpose, a threshold value Dt is preliminarily set that allows printing without occurrence of blur, for each of preliminarily set monitoring areas A. In the case where a print duty for each of the monitoring areas A has exceeded the threshold value Dt, an ejection frequency of ink and conveying speed of a print medium are reduced in association therebetween.

公开(公告)号：US20190299592A1

公开(公告)日：2019-10-03

申请号：US16354852

申请日：2019-03-15

Applicant: CANON KABUSHIKI KAISHA

Inventor： Ayako Iwasaki ,  Yoshiyuki Nakagawa ,  Yoshihiro Hamada ,  Masashi Hayashi ,  Kentaro Muro ,  Yutaka Kano ,  Takahide Takeishi

IPC: B41J2/045

Abstract: An image forming apparatus 101 capable of performing printing with a high image quality, and a control method of the image forming apparatus 101 are provided. For this purpose, a threshold value Dt is preliminarily set that allows printing without occurrence of blur, for each of preliminarily set monitoring areas A. In the case where a print duty for each of the monitoring areas A has exceeded the threshold value Dt, an ejection frequency of ink and conveying speed of a print medium are reduced in association therebetween.

公开(公告)号：US10421287B2

公开(公告)日：2019-09-24

申请号：US15992667

申请日：2018-05-30

Applicant: CANON KABUSHIKI KAISHA

Inventor： Takuro Yamazaki ,  Toru Nakakubo ,  Kazuhiro Yamada ,  Yoshiyuki Nakagawa ,  Yoshihiro Hamada ,  Koichi Ishida ,  Shingo Okushima

IPC: B41J2/18 ,  B41J2/14

Abstract: A plurality of pressure chambers are formed in a circulation channel for liquid in order to array ejection ports in a high density in association with the circulation channel. The circulation channel is connected to a penetration supply path and a penetration recovery path that penetrate a substrate.

公开(公告)号：US20180361734A1

公开(公告)日：2018-12-20

申请号：US16006325

申请日：2018-06-12

Applicant: CANON KABUSHIKI KAISHA

Inventor： Tomoko Kudo ,  Takaaki Yamaguchi ,  Keiji Tomizawa ,  Masaki Oikawa ,  Yoshihiro Hamada ,  Masataka Sakurai

IPC: B41J2/045 ,  B41J2/14

CPC classification number: B41J2/0451 ,  B41J2/04555 ,  B41J2/0458 ,  B41J2/04581 ,  B41J2/14072 ,  B41J2/14201 ,  B41J2002/14491

Abstract: A liquid ejection head includes a substrate including an electrically insulating film, an energy generating element provided on the substrate and configured to generate energy used to eject a liquid, a flow path formed through the substrate and communicating with an ejection port configured to eject a liquid, and a wiring layer formed in the electrically insulating film of the substrate, used to drive the energy generating element, provided apart from a wall defining the flow path, and provided to surround the flow path in a plan view of the substrate.

公开(公告)号：US20170057228A1

公开(公告)日：2017-03-02

申请号：US15229486

申请日：2016-08-05

Applicant: CANON KABUSHIKI KAISHA

Inventor： Masaki Oikawa ,  Yoshihiro Hamada ,  Takuya Hatsui ,  Makoto Sakurai ,  Takeru Yasuda

IPC: B41J2/14

CPC classification number: B41J2/14129

Abstract: A liquid ejection head, including: a flow path forming member including a resin layer having an ejection orifice and a flow path formed therein; a substrate including a heat-generating resistance element for ejecting liquid and a protective layer having a portion for covering the heat-generating resistance element, a surface of the portion being exposed to the flow path; and an intermediate layer formed between the resin layer and the protective layer, the intermediate layer including a silicon carbonitride material.

Abstract translation: 一种液体喷射头，包括：流路形成构件，其包括具有喷射孔和形成在其中的流路的树脂层; 包括用于喷射液体的发热电阻元件的基板和具有用于覆盖发热电阻元件的部分的保护层，该部分的表面暴露于流路; 以及形成在树脂层和保护层之间的中间层，中间层包括碳氮化硅材料。