公开(公告)号：US20220032640A1

公开(公告)日：2022-02-03

申请号：US17387685

申请日：2021-07-28

Applicant: Seiko Epson Corporation

Inventor： Takahiro KANEGAE ,  Katsuhiro OKUBO ,  Hiroyuki HAGIWARA ,  Nobuaki ITO ,  Shun KATSUIE

IPC: B41J2/175 ,  B41J2/155

Abstract: There is provided a liquid ejecting head including: first and second nozzle rows extending in a first direction; a first supply flow path; a first filter chamber having a first inlet; and a second filter chamber having a second inlet, in which the first and second nozzle rows are shifted from each other in both the first direction and a second direction orthogonal to the first direction, the first supply flow path has a branch flow path for distributing the liquid between the first filter chamber and the second filter chamber at a branch position, the branch position is disposed between the first filter chamber and the second filter chamber in a plan view, and the first and second inlets are disposed at a part where the first filter chamber and the second filter chamber overlap each other when viewed in the second direction.

公开(公告)号：US20240042772A1

公开(公告)日：2024-02-08

申请号：US18364683

申请日：2023-08-03

Applicant: SEIKO EPSON CORPORATION

Inventor： Hiroyuki HAGIWARA ,  Shun KATSUIE ,  Hidenori SOKABE

IPC: B41J2/18 ,  B41J2/175

CPC classification number: B41J2/18 ,  B41J2/17563

Abstract: A liquid ejecting apparatus includes a filter that partitions a common liquid chamber communicating with a nozzles into an upstream chamber and a downstream chamber, an inlet, an outlet, a liquid storage section, a supply flow path, and a recovery flow path. A beam portion is provided inside the downstream chamber. A pressurization discharge operation for discharging the liquid from the nozzles and a circulation operation for circulating the liquid in a circulation path are performed. In the filling process of filling the circulation path with the liquid, after the first circulation operation is performed, a predetermined operation for moving the liquid inside the downstream chamber in a direction different from a direction in which the liquid inside the downstream chamber is moved by the circulation operation is performed, and thereafter, the pressurization discharge operation is performed.

公开(公告)号：US20210129512A1

公开(公告)日：2021-05-06

申请号：US17083852

申请日：2020-10-29

Applicant: SEIKO EPSON CORPORATION

Inventor： Yoshinori NAKAJIMA ,  Shun KATSUIE

IPC: B32B27/36 ,  B32B7/12 ,  B32B27/08 ,  B32B27/30 ,  B32B27/32 ,  B32B27/18 ,  B32B1/08 ,  B41J2/175 ,  B41J2/14 ,  B29C45/00 ,  B29C45/14

Abstract: A flow path structure including a first-flow path includes a first-flow path member that including a first-resin member made of a resin and a first-film member having a film, a second-flow path member laminated on the first-flow path member and adhered to the first-flow path member, in which the first-resin member includes a first-front surface that is a surface facing the second-flow path member and that is provided with a first-recessed portion, the first-film member includes a first-surface and a second-surface that is opposite from the first-surface, at least a portion of the first-surface is in close contact with a front surface of the first-resin member inside the first-recessed portion, and the second-surface and the second-flow path member define at least a portion of the first-flow path in a region overlapping the first-recessed portion in a laminating direction of the first-flow path member and the second-flow path member.

公开(公告)号：US20240326433A1

公开(公告)日：2024-10-03

申请号：US18614859

申请日：2024-03-25

Applicant: SEIKO EPSON CORPORATION

Inventor： Hiroyuki HAGIWARA ,  Shun KATSUIE

IPC: B41J2/15

CPC classification number: B41J2/15 ,  B41J2202/12

Abstract: There is provided a liquid ejecting head H including a plurality of head chips. The plurality of head chips include one or a plurality of first head chips and one or a plurality of second head chips having a higher ejection ability than the first head chip.

公开(公告)号：US20240042771A1

公开(公告)日：2024-02-08

申请号：US18363093

申请日：2023-08-01

Applicant: SEIKO EPSON CORPORATION

Inventor： Hidenori SOKABE ,  Hiroyuki HAGIWARA ,  Shun KATSUIE

IPC: B41J2/18 ,  B41J2/175

CPC classification number: B41J2/18 ,  B41J2/17563 ,  B41J2/17596

Abstract: A liquid ejecting apparatus includes a common liquid chamber communicating with nozzles, a filter partitioning the common liquid chamber into an upstream chamber and a downstream chamber, an inlet and an outlet for the upstream chamber, a liquid storage section, a supply flow path, and a recovery flow path. A beam portion is provided inside the downstream chamber. A pressurization discharge operation for discharging the liquid from the nozzles by pressurizing the supply flow path and a circulation operation for circulating the liquid in a circulation path including the liquid storage section, the supply flow path, the common liquid chamber, and the recovery flow path, are performed. In a process of filling the circulation path with the liquid, the circulation operation is performed after the pressurization discharge operation is performed.

公开(公告)号：US20230010747A1

公开(公告)日：2023-01-12

申请号：US17810685

申请日：2022-07-05

Applicant: SEIKO EPSON CORPORATION

Inventor： Masahiko SATO ,  Shunsuke WATANABE ,  Shun KATSUIE

IPC: B41J2/145

Abstract: There is provided a head module in which a first direction is a main scanning direction, including: a first nozzle row including a first nozzle; a second nozzle row including a second nozzle; and a third nozzle row including a third nozzle, in which a distance P1 between the first nozzle row and the second nozzle row in the first direction and a distance P2 between the first nozzle row and the third nozzle row in the first direction are expressed as P1:P2=E1:O1 where a value E1 is a positive even number and a value O1 is a positive odd number satisfying O1>E1.

公开(公告)号：US20240083170A1

公开(公告)日：2024-03-14

申请号：US18462969

申请日：2023-09-07

Applicant: SEIKO EPSON CORPORATION

Inventor： Koki HIRATA ,  Tomoyuki MIYAZAWA ,  Yukihiro HANAOKA ,  Shun KATSUIE

IPC: B41J2/165 ,  B41J2/175 ,  B41J29/17

CPC classification number: B41J2/16526 ,  B41J2/16535 ,  B41J2/175 ,  B41J29/17

Abstract: A liquid ejecting apparatus includes a liquid ejecting head having a first-nozzle-row, a first-tank storing a first-liquid, a first-supply-flow-path for supplying the first-liquid to the first-nozzle-row from the first-tank, a first on-off valve provided in an intermediate portion of the first-supply-flow-path and configured to open and close the first-supply-flow-path, and a first-pressurizing-mechanism configured to pressurize an inside of the first-tank. A pressure inside the first-tank is set to a predetermined positive pressure by driving the first-pressurizing-mechanism in a closed state of the first on-off valve. Thereafter, a discharge process of discharging the first-liquid from the first-nozzle-row is performed by bringing the first on-off valve into an open state. In the discharge process, the first on-off valve is switched from the open state to the closed state at a timing at which the first-liquid is being continuously discharged from the first-nozzle-row.

公开(公告)号：US20230249459A1

公开(公告)日：2023-08-10

申请号：US18164231

申请日：2023-02-03

Applicant: SEIKO EPSON CORPORATION

Inventor： Takanori AIMONO ,  Yuma FUKUZAWA ,  Shohei MIZUTA ,  Shotaro TAMAI ,  Shun KATSUIE

IPC: B41J2/14

CPC classification number: B41J2/14201 ,  B41J2002/14467

Abstract: A liquid ejecting head includes: a nozzle; first to fourth pressure chambers; a communication flow path coupled to the nozzle and communicating between the nozzle and the first to fourth pressure chambers; first to fourth flow paths coupling the communication flow path and the first to fourth pressure chambers; a first-common-liquid-chamber communicating with the first-pressure-chamber and the second-pressure-chamber; and a second-common-liquid-chamber communicating with the third-pressure-chamber and the fourth-pressure-chamber. The first-flow-path and the second-flow-path are arranged side by side in a first-direction, the third-flow-path and the fourth-flow-path are arranged side by side in the first-direction, and the first-flow-path and the second-flow-path, and the third-flow-path and the fourth-flow-path are arranged to be shifted in a second-direction orthogonal to the first-direction. The first-flow-path is shifted from each of the third-flow-path and the fourth-flow-path in the first-direction, and the second-flow-path is shifted from each of the third-flow-path and the fourth-flow-path in the first-direction.

公开(公告)号：US20220184956A1

公开(公告)日：2022-06-16

申请号：US17547526

申请日：2021-12-10

Applicant: Seiko Epson Corporation

Inventor： Hiroaki OKUI ,  Eiichiro WATANABE ,  Shun KATSUIE

IPC: B41J2/155 ,  B41J2/14

Abstract: A head includes an upper surface opposite from an ejection surface; and an electrical coupling portion disposed at a first-end portion of the upper surface in a Y-direction, an outer shape of the upper surface has first and second edges separated from each other in an X-direction, a third-edge disposed at the first-end portion, and a fourth-edge disposed at a second-end portion opposite from the first-end portion in the Y-direction, along a V-direction, and when viewed in a normal direction, the upper surface is not overlapped with an acute-angled portion of a virtual parallelogram having a first-virtual side contacting the first-edge, a second-virtual side contacting the second-edge, a third-virtual side contacting the third-edge, and a fourth-virtual side contacting the fourth-edge, and projects beyond an obtuse-angled portion of the virtual parallelogram in the X-direction.

公开(公告)号：US20210213737A1

公开(公告)日：2021-07-15

申请号：US17146003

申请日：2021-01-11

Applicant: SEIKO EPSON CORPORATION

Inventor： Yu OKAMURA ,  Masahiko SATO ,  Shun KATSUIE

IPC: B41J2/145 ,  B41J2/14

Abstract: A liquid ejecting apparatus includes a head unit having heads that configure to eject a liquid in a first-direction, and in which a second-direction orthogonal to the first-direction is a short direction and a third-direction orthogonal to the first and second-directions is a longitudinal direction, and a holding member. The head unit has a first-head, a second-head adjacent to the first-head, and disposed in the second-direction, and a third head adjacent to the second-head, and disposed in the second-direction. The first head has a first-gripping portion provided on an upper surface. The second-head has a second-gripping portion provided on the upper surface. The third-head has a third-gripping portion provided on the upper surface. A position of the second-gripping portion with respect to the third-direction is different from positions of the first-gripping portion and the third-gripping portion with respect to the third-direction.