公开(公告)号：US10442203B2

公开(公告)日：2019-10-15

申请号：US16028846

申请日：2018-07-06

Applicant: CANON KABUSHIKI KAISHA

Inventor： Toru Nakakubo ,  Satoshi Kimura ,  Shingo Okushima

IPC: B41J2/165

Abstract: A liquid ejection head and a liquid ejection apparatus capable of maintaining high reliability include a first cover member including an aperture and covering a surface of a flow path member facing a print medium of the liquid ejection head, a second cover member covering a side surface of the liquid ejection head, and a displacement absorption part that absorbs the displacement between the first cover member and the second cover member. Furthermore, the space between the aperture and the flow path member is sealed with a sealing material.

公开(公告)号：US20190023018A1

公开(公告)日：2019-01-24

申请号：US16140896

申请日：2018-09-25

Applicant: CANON KABUSHIKI KAISHA

Inventor： Yoshiyuki Nakagawa ,  Kazuhiro Yamada ,  Noriyasu Nagai ,  Takuro Yamazaki ,  Toru Nakakubo ,  Akira Yamamoto ,  Masafumi Morisue ,  Ryo Kasai

IPC: B41J2/175 ,  B41J2/18

CPC classification number: B41J2/175 ,  B41J2/1404 ,  B41J2/18 ,  B41J2202/12

Abstract: The liquid ejection head 1 is provided with: an ejection orifice array 19 arraying multiple ejection orifices 12 in order to eject a liquid; multiple energy-generating elements 11 for generating energy in order to eject the liquid; a substrate 10 provided with the multiple energy-generating elements 11; a through port array 25 arraying multiple through ports 16 penetrating the substrate 10; multiple linear liquid flow paths 13 positioned between the through port array 25 and the ejection orifice array 19, and connected to respective ejection orifices 12 of the ejection orifice array 19 and respective through ports 16 of the through port array 25; and first and second electrode 21 and 22 arranged in each of the multiple liquid flow paths 13, and for generating an electroosmotic flow in the liquid.

公开(公告)号：US20190023016A1

公开(公告)日：2019-01-24

申请号：US16141055

申请日：2018-09-25

Applicant: CANON KABUSHIKI KAISHA

Inventor： Yoshiyuki Nakagawa ,  Kazuhiro Yamada ,  Noriyasu Nagai ,  Takuro Yamazaki ,  Toru Nakakubo ,  Akira Yamamoto ,  Masafumi Morisue ,  Ryo Kasai

IPC: B41J2/14

Abstract: A liquid ejection head 1 includes an ejection orifice 12 through which a liquid is ejected, a first liquid flow path 13 which is in communication with the ejection orifice 12 and through which the liquid flows, a second liquid flow path 14 which is in communication with the ejection orifice 12 on the opposite side of the first liquid flow 13 with respect to the ejection orifice 12 and through which the liquid flows, a first electrode 21 positioned in the first liquid flow path 13, and a second electrode 22 which is positioned in the second liquid flow path 14 and generates an electro-osmotic flow in the liquid together with the first electrode 21.

公开(公告)号：US20190001699A1

公开(公告)日：2019-01-03

申请号：US15995493

申请日：2018-06-01

Applicant: CANON KABUSHIKI KAISHA

Inventor： Toru Nakakubo ,  Takuro Yamazaki ,  Kazuhiro Yamada ,  Yoshiyuki Nakagawa

IPC: B41J2/18 ,  B41J2/175 ,  B41J2/14 ,  B41J2/21

Abstract: The present invention provides a liquid ejecting module capable of performing stable ejection operation while circulating and supplying fresh ink to the vicinity of ejection ports arranged in high density. To achieve this, a liquid ejecting module includes an element arranged face in which a plurality of ejecting elements are arranged, a circulation flow path including a supply flow path which supplies liquid to a pressure chamber and a collection flow path which collects liquid from the pressure chamber, and a liquid delivery mechanism provided in the circulation flow path for circulating liquid in the pressure chamber. The liquid delivery mechanism is located lower than the element arranged face.

公开(公告)号：US20190001698A1

公开(公告)日：2019-01-03

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

CPC classification number: B41J2/18 ,  B41J2/1404 ,  B41J2/14145 ,  B41J2002/14459 ,  B41J2202/12 ,  B41J2202/21

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：US10137685B2

公开(公告)日：2018-11-27

申请号：US15584503

申请日：2017-05-02

Applicant: CANON KABUSHIKI KAISHA

Inventor： Toru Nakakubo ,  Shingo Okushima ,  Satoshi Kimura ,  Takuya Iwano ,  Akira Yamamoto

IPC: B41J2/14 ,  B41J2/165 ,  B41J2/045 ,  B41J2/16

Abstract: A cover member includes two end regions located at two ends in a first direction, and two beam portions which extend in the first direction and connect the two end regions together and which, together with the two end regions, form a single opening that exposes a plurality of discharge ports. When a width of the opening is denoted as a [mm], a minimum length in the first direction of the end regions is denoted as c [mm], a modulus of longitudinal elasticity of the cover member is denoted as E [GPa], and a thickness of the cover member is denoted as t [mm], the following expression is established: c ≥ 10 ⁢ ( a 25 ) 4 ( t 0.3 ) 3 ⁢ ( E 200 ) .

公开(公告)号：US20180154634A1

公开(公告)日：2018-06-07

申请号：US15813351

申请日：2017-11-15

Applicant: CANON KABUSHIKI KAISHA

Inventor： Toru Nakakubo

IPC: B41J2/14 ,  B41J2/16

CPC classification number: B41J2/14233 ,  B41J2/14 ,  B41J2/14201 ,  B41J2/1607 ,  B41J2/161 ,  B41J2/1623 ,  B41J2/1628 ,  B41J2/1629 ,  B41J2/1631 ,  B41J2/1639 ,  B41J2/1642 ,  B41J2/1643 ,  B41J2/1646 ,  B41J2002/14258

Abstract: Liquid ejection head includes a substrate, a piezoelectric element provided on the substrate, an ejection port forming member provided on the substrate carrying the piezoelectric element. The ejection port forming member has an ejection port and forms a pressure chamber with the substrate. A first thin film is arranged between the substrate and the piezoelectric element to produce a space between the substrate and the first thin film. A second thin film is arranged on the piezoelectric element. The first thin film is arranged so as not to contact the lateral (edge) surface of the piezoelectric element and has a higher rigidity than the second thin film.

公开(公告)号：US09616666B2

公开(公告)日：2017-04-11

申请号：US14820823

申请日：2015-08-07

Applicant: CANON KABUSHIKI KAISHA

Inventor： Toshifumi Yoshioka ,  Toru Nakakubo ,  Shinichiro Watanabe

IPC: B41J2/16 ,  B41J2/14

CPC classification number: B41J2/161 ,  B41J2/14233 ,  B41J2/1628 ,  B41J2/1629 ,  B41J2/1631

Abstract: Provided is a method of manufacturing an element substrate, including: forming first and second resists on a predetermined surface of a substrate so that part of the predetermined surface is exposed; etching the substrate with the first and second resists being used as a mask to form a first recess in the substrate; removing the second resist to expose a portion of the substrate that is different from the first recess; etching the substrate with the first resist being used as a mask to deepen the first recess and to form a second recess communicating with the first recess in the substrate; and covering openings of the first and second recesses with an orifice forming member to form a pressure chamber by the first recess and an orifice forming member and to form a flow reducing portion by the second recess and the orifice forming member.

公开(公告)号：US20160059557A1

公开(公告)日：2016-03-03

申请号：US14832438

申请日：2015-08-21

Applicant: CANON KABUSHIKI KAISHA

Inventor： Toshifumi Yoshioka ,  Toru Nakakubo ,  Shinichiro Watanabe

IPC: B41J2/14

CPC classification number: B41J2/14233 ,  B41J2/161 ,  B41J2/1628 ,  B41J2/1631 ,  B41J2002/14491 ,  B41J2202/11

Abstract: Provided is an element substrate including an orifice for ejecting liquid, a diaphragm for causing the liquid to be ejected through the orifice, a piezoelectric element for deforming the diaphragm, a pressure chamber for applying a pressure due to deformation of the diaphragm to the liquid, and a flow reducing portion communicating with the pressure chamber and having a width that is smaller than that of the pressure chamber. A connecting portion is formed for communication between the pressure chamber and the flow reducing portion. The connecting portion and the pressure chamber communicate with each other without level difference in the width direction, and the connecting portion has a depth that is smaller than a depth of the pressure chamber.

Abstract translation: 提供了一种元件基板，包括用于喷射液体的孔口，用于使液体通过孔口喷射的隔膜，用于使膜片变形的压电元件，用于将由于隔膜的变形施加压力的压力室施加到液体， 以及与所述压力室连通并且具有小于所述压力室的宽度的流动减小部。 形成连接部分，用于在压力室和减流部分之间连通。 连接部和压力室彼此连通，宽度方向上没有水平差，连接部的深度小于压力室的深度。

公开(公告)号：US09003620B2

公开(公告)日：2015-04-14

申请号：US13915901

申请日：2013-06-12

Applicant: Canon Kabushiki Kaisha

Inventor： Shinan Wang ,  Toru Nakakubo ,  Hirotaka Sekiguchi

IPC: H04R17/00 ,  B41J2/16

CPC classification number: B41J2/164 ,  B41J2/1609 ,  B41J2/1623 ,  B41J2/1631 ,  B41J2/1632 ,  B41J2/1634 ,  B41J2/1642 ,  B41J2/1646 ,  Y10T29/42 ,  Y10T29/49401

Abstract: A process for producing a liquid ejection head having a piezoelectric body provided with an ejection orifice for ejecting liquid and a pressure chamber communicating therewith for retaining the liquid, wherein an electrode is formed on an inner wall surface of the pressure chamber to deform the pressure chamber by piezoelectric action caused by applying voltage to the electrode to eject the liquid, comprising providing the piezoelectric body in which a surface thereof having the ejection orifice has an arithmetic mean roughness of 0.1-1 μm, forming a dry film resist pattern on the surface of the piezoelectric body so as to expose the ejection orifice and a linear region connected thereto, and forming a metal thin film pattern being connected to the electrode on the inner wall surface and continuously extending from the inner wall surface to the linear region by using the dry film resist pattern as a mask.

Abstract translation: 一种具有压电体的液体喷射头的制造方法，该压电体设置有用于喷射液体的喷射孔和与其连通以保持液体的压力室，其中在压力室的内壁表面上形成电极以使压力室变形 通过向电极施加电压以喷射液体而产生的压电作用，包括提供压电体，其中具有喷射孔的表面具有0.1-1μm的算术平均粗糙度，在表面上形成干膜抗蚀剂图案 所述压电体以暴露所述喷射孔和与其连接的线性区域，并且形成金属薄膜图案，所述金属薄膜图案通过使用所述干燥状态从所述内壁表面连续地延伸到所述内壁表面到所述线性区域 膜抗蚀剂图案作为掩模。