公开(公告)号：US20210197566A1

公开(公告)日：2021-07-01

申请号：US17116945

申请日：2020-12-09

Applicant: CANON KABUSHIKI KAISHA

Inventor： Sayaka Seki ,  Kyosuke Toda ,  Shimpei Yoshikawa ,  Ryo Sato ,  Keiichiro Tsukuda ,  Kazuhiko Okito ,  Kenji Yabe ,  Yasuaki Kitayama

IPC: B41J2/16

Abstract: A liquid ejection head includes an element substrate having an energy-generating element configured to generate an energy for ejecting a liquid from an ejection orifice, a support member for supporting the element substrate, the support member including a liquid chamber formed therein to supply the liquid to the ejection orifice, and a damper portion for absorbing vibration of the liquid inside the liquid chamber, the damper portion being flexible. The support member has a through-hole for communicating with the liquid chamber at a position located above the liquid chamber in a vertical direction when the liquid ejection head is in a use orientation. The damper portion has a taper portion that tapers downwardly in the vertical direction and is positioned in such a manner that the tapering portion closes the through-hole, and the damper portion and the support member are attached to each other by a fixing member.

公开(公告)号：US20180029364A1

公开(公告)日：2018-02-01

申请号：US15661870

申请日：2017-07-27

Applicant: CANON KABUSHIKI KAISHA

Inventor： Sayaka Seki ,  Yuichiro Akama ,  Yuji Tamaru ,  Naoko Tsujiuchi ,  Yasuaki Kitayama

IPC: B41J2/14

CPC classification number: B41J2/1433 ,  B41J2/15 ,  B41J2/1752 ,  B41J2/17523 ,  B41J2/17559

Abstract: A liquid discharge head includes a recording element substrate having first to fourth discharge port groups, each of which includes a plurality of discharge ports for discharging liquid, first flow path connecting a first liquid tank to the first discharge port group, a second flow path connecting a second liquid tank to the second discharge port group, and a third flow path connecting a third liquid tank to the third discharge port group and the fourth discharge port group, wherein a flow resistance in the first flow path is smaller than a flow resistance in the second flow path and larger than a flow resistance in the third flow path, and wherein a ratio of the flow resistance in the second flow path to the flow resistance in the third flow path is 4 or less.

公开(公告)号：US20210197562A1

公开(公告)日：2021-07-01

申请号：US17119901

申请日：2020-12-11

Applicant: CANON KABUSHIKI KAISHA

Inventor： Kyosuke Toda ,  Sayaka Seki ,  Shimpei Yoshikawa ,  Kazuhiko Okito ,  Kenji Yabe ,  Yasuaki Kitayama ,  Ryo Sato

IPC: B41J2/14 ,  B41J2/165

Abstract: A liquid discharge head includes an element substrate including an energy generation element configured to generate energy for discharging liquid from a discharge port, and a supporting member which supports the element substrate and in which a liquid chamber configured to supply liquid to the discharge port is formed, wherein a recessed portion communicating with the liquid chamber is formed at a position above the liquid chamber in a vertical direction in an orientation of the liquid discharge head when used, and wherein at least one of surfaces forming the recessed portion is formed of a flexible member configured to absorb vibration of liquid in the liquid chamber.

公开(公告)号：US20190168509A1

公开(公告)日：2019-06-06

申请号：US16271697

申请日：2019-02-08

Applicant: CANON KABUSHIKI KAISHA

Inventor： Yuji Tamaru ,  Yuichiro Akama ,  Naoko Tsujiuchi ,  Sayaka Seki ,  Yasuaki Kitayama ,  Yusuke Hashimoto ,  Takanobu Manabe

IPC: B41J2/16

Abstract: There is provided a method for manufacturing a liquid discharge head including a liquid discharge head substrate and a flow path forming member, the liquid discharge head substrate having a base, a pressure generation portion provided at a front surface of the base to generate pressure for discharging a liquid, and a supply port for supplying the liquid to the pressure generation portion, and the flow path forming member forming a flow path for feeding the liquid supplied from the supply port to the pressure generation portion. The method includes removing a sacrificial layer by etching the base from a back surface of the base, in a state in which an end covering portion of a cover layer for covering the sacrificial layer is covered with the resin layer. The method suppresses formation of a crack in the end covering portion that covers the end portion of the sacrificial layer.

公开(公告)号：US10081184B2

公开(公告)日：2018-09-25

申请号：US15647023

申请日：2017-07-11

Applicant: CANON KABUSHIKI KAISHA

Inventor： Yuichiro Akama ,  Yuji Tamaru ,  Naoko Tsujiuchi ,  Sayaka Seki ,  Yasuaki Kitayama

IPC: B41J2/175 ,  B41J2/14

CPC classification number: B41J2/1433 ,  B41J2/1752 ,  B41J2/17523 ,  B41J2/17533 ,  B41J2/17536

Abstract: A liquid discharge head includes a recording element substrate for discharging a liquid and a housing with the recording element substrate attached thereto. A plurality of holes having openings on a back side of an attachment surface of the housing to be attached to the carriage, are juxtaposed in a direction intersecting with a vertical direction in a state where the liquid discharge head is attached to the carriage. Two positioning bosses, on the attachment surface, are formed above two holes at both end sides of a plurality of the juxtaposed holes or above portions on an inner side than the two holes, and configured to contact the carriage to determine a position of the liquid discharge head on the carriage.

公开(公告)号：US12103314B2

公开(公告)日：2024-10-01

申请号：US17738967

申请日：2022-05-06

Applicant: CANON KABUSHIKI KAISHA

Inventor： Yasuaki Kitayama

IPC: B41J2/175 ,  B41J2/165

CPC classification number: B41J2/17553 ,  B41J2/17503 ,  B41J2/1752 ,  B41J2/16505 ,  B41J2/1753 ,  B41J2/17536

Abstract: An inkjet recording apparatus includes a carriage configured to scan in a scanning direction, and a discharge head mounted on the carriage and configured to discharge liquid. The discharge head includes a housing and a cover that covers the housing, and a space is provided between an end portion of the cover and an end portion of the housing in the scanning direction. The cover is movable relative to the housing in the scanning direction.

公开(公告)号：US20240059084A1

公开(公告)日：2024-02-22

申请号：US18234020

申请日：2023-08-15

Applicant: Canon Kabushiki Kaisha

Inventor： TAKEHO MIYASHITA ,  Kyosuke Toda ,  Yasuaki Kitayama

IPC: B41J25/34

CPC classification number: B41J25/34

Abstract: An object is to provide a downsized print head in which a plurality of print element substrates are arranged in parallel in a serial type printing apparatus. In the print head, there are arranged in parallel a first print element substrate in which a terminal row and an ejection element row are arranged and a second print element substrate in which a terminal row and an ejection element row are arranged. The first print element substrate and the second print element substrate are arranged so that each terminal row is located outside in a first direction and each ejection element row is located inside in the first direction.

公开(公告)号：US11518166B2

公开(公告)日：2022-12-06

申请号：US16820426

申请日：2020-03-16

Applicant: CANON KABUSHIKI KAISHA

Inventor： Yasuaki Kitayama ,  Kyosuke Toda ,  Tatsunori Fujii

IPC: B41J2/14 ,  B41J2/16

Abstract: There is provided a method of manufacturing a liquid ejection head. The liquid ejection head includes a recording device substrate, an electric wiring member configured to be connected to the recording device substrate at an electric connection portion, and a support member including a concave portion and a convex portion. The convex portion includes a first surface and a second surface. The method includes applying an adhesive to the surface of the concave portion on which the recording device substrate is to be placed and to the first surface, pressing the applied adhesive after the recording device substrate is placed on the surface of the concave portion on which the recording device substrate is to be placed, to fill, with the adhesive, a gap between the convex portion and the recording device substrate to a position higher than the first surface, and sealing the electric connection portion.

公开(公告)号：US20180029367A1

公开(公告)日：2018-02-01

申请号：US15659506

申请日：2017-07-25

Applicant: CANON KABUSHIKI KAISHA

Inventor： Yuji Tamaru ,  Yuichiro Akama ,  Naoko Tsujiuchi ,  Sayaka Seki ,  Yasuaki Kitayama ,  Yusuke Hashimoto ,  Takanobu Manabe

IPC: B41J2/16

CPC classification number: B41J2/16 ,  B41J2/1603 ,  B41J2/1604 ,  B41J2/1607 ,  B41J2/1623 ,  B41J2/1628 ,  B41J2/1629 ,  B41J2/1631 ,  B41J2/1637 ,  B41J2/1639 ,  B41J2/1642 ,  B41J2/1645 ,  B41J2/1646

Abstract: There is provided a method for manufacturing a liquid discharge head including a liquid discharge head substrate and a flow path forming member, the liquid discharge head substrate having a base, a pressure generation portion provided at a front surface of the base to generate pressure for discharging a liquid, and a supply port for supplying the liquid to the pressure generation portion, and the flow path forming member forming a flow path for feeding the liquid supplied from the supply port to the pressure generation portion. The method includes removing a sacrificial layer by etching the base from a back surface of the base, in a state in which an end covering portion of a cover layer for covering the sacrificial layer is covered with the resin layer. The method suppresses formation of a crack in the end covering portion that covers the end portion of the sacrificial layer.

公开(公告)号：US20180029363A1

公开(公告)日：2018-02-01

申请号：US15647023

申请日：2017-07-11

Applicant: CANON KABUSHIKI KAISHA

Inventor： Yuichiro Akama ,  Yuji Tamaru ,  Naoko Tsujiuchi ,  Sayaka Seki ,  Yasuaki Kitayama

IPC: B41J2/14

CPC classification number: B41J2/1433 ,  B41J2/1752 ,  B41J2/17523 ,  B41J2/17533 ,  B41J2/17536

Abstract: A liquid discharge head includes a recording element substrate for discharging a liquid and a housing with the recording element substrate attached thereto. A plurality of holes having openings on a back side of an attachment surface of the housing to be attached to the carriage, are juxtaposed in a direction intersecting with a vertical direction in a state where the liquid discharge head is attached to the carriage. Two positioning bosses, on the attachment surface, are formed above two holes at both end sides of a plurality of the juxtaposed holes or above portions on an inner side than the two holes, and configured to contact the carriage to determine a position of the liquid discharge head on the carriage.