公开(公告)号：US20200207078A1

公开(公告)日：2020-07-02

申请号：US16727524

申请日：2019-12-26

Applicant: CANON KABUSHIKI KAISHA

Inventor： Rei Kurashima ,  Akihisa Iio ,  Takahiro Akiyama ,  Toru Nakakubo ,  Noriyuki Kaifu

IPC: B41J2/045

Abstract: A driving method is provided which enables a liquid feeding apparatus using a driving element in a membrane shape to feed a liquid at high liquid feeding accuracy. To this end, a voltage applied to the driving element is controlled in such a way as to repeat a first period in which the voltage is changed from a first voltage to a second voltage and a second period which is a longer period than the first period and in which the voltage is changed from the second voltage to the first voltage, and such that an inflection point is provided to each predetermined interval during the first period based on a Helmholtz vibration period unique to the liquid feeding apparatus.

公开(公告)号：US20200147957A1

公开(公告)日：2020-05-14

申请号：US16673286

申请日：2019-11-04

Applicant: CANON KABUSHIKI KAISHA

Inventor： Akio Saito ,  Toru Nakakubo ,  Yohei Nakamura ,  Zentaro Tamenaga

IPC: B41J2/045 ,  B41J2/14

Abstract: A liquid ejection head including a recording element substrate that ejects a liquid, a flow passage member provided with a flow passage that supplies the liquid to the recording element substrate, an elastic member having elasticity disposed between the recording element substrate and the flow passage member, and a fixing member that fixes the recording element substrate and the flow passage member. In the liquid ejection head, an area between the recording element substrate and the flow passage member through which the liquid flows is sealed by having the elastic member be deformed with the fixing member.

公开(公告)号：US20190232675A1

公开(公告)日：2019-08-01

申请号：US16379360

申请日：2019-04-09

Applicant: CANON KABUSHIKI KAISHA

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

IPC: B41J2/18 ,  B41J2/155 ,  B41J2/045 ,  B41J2/14 ,  B41J2/175 ,  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：US20190001671A1

公开(公告)日：2019-01-03

申请号：US15976470

申请日：2018-05-10

Applicant: CANON KABUSHIKI KAISHA

Inventor： Kazuhiro Yamada ,  Toru Nakakubo ,  Yoshiyuki Nakagawa ,  Shingo Okushima

IPC: B41J2/055 ,  B41J2/175

Abstract: A liquid ejecting head has a laminated flow path member on which a supply flow path for individually supplying a plurality of liquids to an element substrate and a collection flow path for individually collecting the liquids are formed. The supply flow path includes a first common supply flow path for horizontally leading a first liquid and a second common supply flow path for horizontally leading a second liquid to positions corresponding to a plurality of element substrates. The first and second common supply flow paths are formed in the same layer of the laminated flow path member. The collection flow path includes a first common collection flow path for horizontally collecting the first liquid and a second common collection flow path for horizontally collecting the second liquid from positions corresponding to the plurality of element substrates. The first and second common collection flow paths are formed in the same layer of the laminated flow path member.

公开(公告)号：US20180370230A1

公开(公告)日：2018-12-27

申请号：US16000238

申请日：2018-06-05

Applicant: CANON KABUSHIKI KAISHA

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

IPC: B41J2/14

Abstract: In a circulating system which circulates liquid within a liquid ejecting head, thickening of liquid in the vicinity of an ejection port can be more securely suppressed. The ejection port includes a first ejection port disposed in an upstream side in an ejecting direction of ink and a second ejection port disposed in a downstream side in the ejecting direction. The second ejection port includes an enlarged diameter portion whose diameter is enlarged in a radially outward manner from at least a part of an opening edge portion of the first ejection port.

公开(公告)号：US20130342612A1

公开(公告)日：2013-12-26

申请号：US13915758

申请日：2013-06-12

Applicant: Canon Kabushiki Kaisha

Inventor： Toru Nakakubo

IPC: B41J2/14 ,  B41J2/16

CPC classification number: B41J2/14201 ,  B41J2/14209 ,  B41J2/1609 ,  B41J2/1623 ,  B41J2/1626 ,  B41J2/1631 ,  B41J2/1634 ,  B41J2/1642 ,  B41J2/1646 ,  Y10T29/42

Abstract: Provided is a liquid ejection head, including: multiple ejection orifices for ejecting liquid; multiple pressure chambers that communicate with the respective ejection orifices, and are arranged in a first direction and a second direction that intersect each other, the multiple pressure chambers including first electrodes formed on inner walls of the multiple pressure chambers; a piezoelectric block including the multiple pressure chambers and multiple air chambers, the multiple air chambers being arranged in the first direction and the second direction alternately with the multiple pressure chambers, the inner walls of the respective pressure chambers being deformable by application of voltage between the first electrodes and the second electrodes to cause liquid to flow out of open ends of the respective pressure chambers; an orifice plate in which the multiple ejection orifices are arranged; and a plate-like member that is interposed between the piezoelectric block.

Abstract translation: 提供一种液体喷射头，包括：用于喷射液体的多个喷射孔; 多个压力室，其与相应的喷射孔连通，并且布置在彼此相交的第一方向和第二方向上，所述多个压力室包括形成在所述多个压力室的内壁上的第一电极; 包括所述多个压力室和多个空气室的压电块，所述多个空气室沿着所述第一方向和所述第二方向与所述多个压力室交替布置，所述各个压力室的内壁可通过在所述多个压力室之间施加电压而变形 第一电极和第二电极，使液体从各个压力室的开口端流出; 其中布置有多个喷射口的孔板; 以及介于压电块之间的板状构件。

公开(公告)号：US20130340219A1

公开(公告)日：2013-12-26

申请号：US13915901

申请日：2013-06-12

Applicant: Canon Kabushiki Kaisha

Inventor： Shinan Wang ,  Toru Nakakubo ,  Hirotaka Sekiguchi

IPC: 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 通过对电极施加电压而喷射液体而产生的压电作用，包括提供压电体，其中具有喷口的表面具有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。

公开(公告)号：US12070956B2

公开(公告)日：2024-08-27

申请号：US17835481

申请日：2022-06-08

Applicant: CANON KABUSHIKI KAISHA

Inventor： Kazuhiro Yamada ,  Toru Nakakubo ,  Yoshiyuki Nakagawa ,  Shingo Okushima

IPC: B41J2/18 ,  B41J2/14 ,  B41J2/175 ,  B41J2/19

CPC classification number: B41J2/18 ,  B41J2/14024 ,  B41J2/14145 ,  B41J2/17563 ,  B41J2/17596 ,  B41J2/19 ,  B41J2202/12

Abstract: A liquid ejecting head has a laminated flow path member on which a supply flow path for individually supplying a plurality of liquids to an element substrate and a collection flow path for individually collecting the liquids are formed. The supply flow path includes first and second common supply flow paths for horizontally leading first and second liquids to positions corresponding to a plurality of element substrates. The first and second common supply flow paths are formed in the same layer of the laminated flow path member. The collection flow path includes a first common collection flow path for horizontally collecting the first liquid and a second common collection flow path for horizontally collecting the second liquid from positions corresponding to the plurality of element substrates. The first and second common collection flow paths are formed in the same layer of the laminated flow path member.

公开(公告)号：US11813864B2

公开(公告)日：2023-11-14

申请号：US17538775

申请日：2021-11-30

Applicant: CANON KABUSHIKI KAISHA

Inventor： Naoko Shimizu ,  Toru Nakakubo ,  Kazuhiro Yamada ,  Atsushi Teranishi ,  Osamu Kanome

IPC: B41J2/14

CPC classification number: B41J2/14145 ,  B41J2/1404 ,  B41J2/14016 ,  B41J2002/14306 ,  B41J2202/20 ,  B41J2202/21

Abstract: A liquid ejection head includes ejection orifices for ejecting liquid, common liquid chambers connected to the ejection orifices, common flow passages, and pitch conversion flow passages that connects the common flow passages and liquid chambers to each other. The pitch conversion flow passages includes a periphery formed with resin. In a case where a number of pitch conversion flow passages in a group is minimum on a condition that one or more of the pitch conversion flow passages are respectively included in the group, the pitch conversion flow passages have a repeating pattern in which the group is repeatedly arranged. At least one of two pitch conversion flow passages adjoining an m-th pitch conversion flow passage (m is all integers from 1 to n−2, where n is an integer of 3 or more) is one of first to (m+1)-th pitch conversion flow passages.

公开(公告)号：US20230264478A1

公开(公告)日：2023-08-24

申请号：US18142431

申请日：2023-05-02

Applicant: CANON KABUSHIKI KAISHA

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

IPC: B41J2/175 ,  B41J2/16 ,  B41J2/14

CPC classification number: B41J2/175 ,  B41J2/14233 ,  B41J2/1631

Abstract: A liquid ejection head includes a print element substrate including multiple ejection openings, pressure chambers, a common flow path, and pumps, the pumps being configured to circulate liquid between the common flow path and the pressure chamber; and a flow path member laminated to the print element substrate. The flow path member includes a supply flow path and a collection flow path, the supply flow path being configured to supply liquid to the print element substrate, and the collection flow path being configured to collect liquid that is not ejected. The supply flow path and the collection flow path have liquid connection with the same common flow path. A circulating pump generates a flow of liquid flowing in an order of the supply flow path, the common flow path, and the collection flow path, the circulating pump being provided at a position different from the print element substrate.