公开(公告)号：US20190023015A1

公开(公告)日：2019-01-24

申请号：US16143928

申请日：2018-09-27

Applicant: SEIKO EPSON CORPORATION

Inventor： Isamu Togashi ,  Hiroaki Okui ,  Yasuyuki Kudo ,  Fujio Akahane

IPC: B41J2/14

Abstract: A flow path structure includes: a substrate that includes a first surface and a second surface on a side opposite to the first surface; a supply port formed on the first surface; a plurality of discharge ports formed on the second surface; grooves that are formed on the first surface so as to extend in an X direction and communicate with the supply ports and with the plurality of discharge ports via through-holes formed on the substrate; and a sealing portion that is disposed on the first surface and seals each groove.

公开(公告)号：US10059099B2

公开(公告)日：2018-08-28

申请号：US15809083

申请日：2017-11-10

Applicant: SEIKO EPSON CORPORATION

Inventor： Isamu Togashi

IPC: B41J2/14

CPC classification number: B41J2/14201 ,  B41J2/14233 ,  B41J2002/14362 ,  B41J2002/14419 ,  B41J2002/14491 ,  B41J2202/20

Abstract: Provided is a liquid ejecting head which includes head bodies aligned in a direction of liquid ejection surface thereof, a flow-path member in which distribution flow path is provided to supply liquid to the head bodies, and flexible wiring substrates connected to the head bodies. The distribution flow path extends in the first direction. In addition, the flexible wiring substrates adjacent in the first direction overlap when viewed from the first direction. The distribution flow path is disposed in an area on one side with respect to the flexible wiring substrates, in a direction perpendicular to the first direction in the liquid ejection surface.

公开(公告)号：US09827763B2

公开(公告)日：2017-11-28

申请号：US14974692

申请日：2015-12-18

Applicant: SEIKO EPSON CORPORATION

Inventor： Isamu Togashi ,  Shuji Sugawara ,  Yoichi Yamada

IPC: B41J2/14 ,  B41J2/155

CPC classification number: B41J2/14233 ,  B41J2/155 ,  B41J2002/14362

Abstract: A liquid ejecting head includes an ejection surface which extends in a first direction (X-direction) and on which a plurality of nozzles ejecting a liquid are distributed; and protrusion sections that are formed on the ejection surface and protrude on a liquid ejection side in which the liquid is ejected. The ejection surface has abutting regions on which a sealing body that seals the plurality of nozzles by surrounding the plurality of nozzles abuts. When projecting the abutting regions and the protrusion sections along a first direction (X-direction) on a virtual line along a second direction (Y-direction) intersecting the first direction, the protrusion sections are disposed on the ejection surface such that projection of the protrusion sections crosses a boundary of projection of the abutting regions.

公开(公告)号：US09815286B2

公开(公告)日：2017-11-14

申请号：US15015976

申请日：2016-02-04

Applicant: SEIKO EPSON CORPORATION

Inventor： Isamu Togashi ,  Hiroaki Okui

IPC: B41J2/155 ,  B41J2/175

CPC classification number: B41J2/155 ,  B41J2/175 ,  B41J2/17509 ,  B41J25/304 ,  B41J29/02

Abstract: An apparatus includes a flexible tube supplying liquid to an elongated line head along a first direction, in which the line head is provided with nozzles positioned along the first direction, a joint connected to the flexible tube, and flow paths between the joint and the nozzles, and the line head raises and lowers in a second direction, the flexible tube is movable accompanying raising and lowering of the line head, and the joint is disposed at a center portion in a case where the line head is divided into three equal parts in the first direction.

公开(公告)号：US09707760B2

公开(公告)日：2017-07-18

申请号：US15074879

申请日：2016-03-18

Applicant: SEIKO EPSON CORPORATION

Inventor： Isamu Togashi ,  Hiroaki Okui ,  Yasuyuki Kudo ,  Fujio Akahane

IPC: B41J2/14

CPC classification number: B41J2/14233 ,  B41J2/1433 ,  B41J2002/14306 ,  B41J2002/14362 ,  B41J2002/14419 ,  B41J2002/14491

Abstract: A flow path structure includes: a substrate that includes a first surface and a second surface on a side opposite to the first surface; a supply port formed on the first surface; a plurality of discharge ports formed on the second surface; grooves that are formed on the first surface so as to extend in an X direction and communicate with the supply ports and with the plurality of discharge ports via through-holes formed on the substrate; and a sealing portion that is disposed on the first surface and seals each groove.

公开(公告)号：US20160339701A1

公开(公告)日：2016-11-24

申请号：US15226532

申请日：2016-08-02

Applicant: SEIKO EPSON CORPORATION

Inventor： Isamu Togashi

IPC: B41J2/14

CPC classification number: B41J2/14201 ,  B41J2/14233 ,  B41J2002/14362 ,  B41J2002/14419 ,  B41J2002/14491 ,  B41J2202/20

Abstract: Provided is a liquid ejecting head which includes head bodies aligned in a direction of liquid ejection surface thereof, a flow-path member in which distribution flow path is provided to supply liquid to the head bodies, and flexible wiring substrates connected to the head bodies. The distribution flow path extends in the first direction. In addition, the flexible wiring substrates adjacent in the first direction overlap when viewed from the first direction. The distribution flow path is disposed in an area on one side with respect to the flexible wiring substrates, in a direction perpendicular to the first direction in the liquid ejection surface.

公开(公告)号：US11104130B2

公开(公告)日：2021-08-31

申请号：US16919575

申请日：2020-07-02

Applicant: SEIKO EPSON CORPORATION

Inventor： Isamu Togashi

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

Abstract: A bifurcation path and a flow path which communicates with the head main body through the bifurcation path are provided. The bifurcation path includes an upstream-side path and a downstream-side path. In a plan view of a flow-path forming surface including the bifurcation path and the flow path, the flow path is disposed in a state where an angle between a flowing direction in the flow path and a flowing direction in the downstream-side path is an acute angle. In addition, an angle between a first wall surface of the flow path, which is the wall surface located downstream from the upstream-side path, and a second wall surface of the upstream-side path, which is the wall surface connected to the first wall surface, is equal to or less than 90°. Furthermore, the second wall surface of the upstream-side path has an R shape.

公开(公告)号：US10286658B2

公开(公告)日：2019-05-14

申请号：US15909581

申请日：2018-03-01

Applicant: SEIKO EPSON CORPORATION

Inventor： Taiki Hanagami ,  Isamu Togashi

IPC: B41J2/14 ,  B41J2/175 ,  F16K7/16 ,  B05B12/08

Abstract: A flow path member includes a film, a main body that includes a recess portion that is closed by the film, a first opening and a second opening that are provided in the recess portion and used to supply and emit a liquid, and a wall which is provided in the recess portion. The film and the wall are configured to switch between contact and non-contact between the film and the main body according as the film displaces. In a first direction, the wall is provided around the first opening, the wall has a first slit in one of two portions of the wall across the first opening from each other and a second slit in the other one of the two portions, and the second opening is outside the wall. An opening area of the first slit is larger than an opening area of the second slit.

公开(公告)号：US10226952B2

公开(公告)日：2019-03-12

申请号：US15427789

申请日：2017-02-08

Applicant: SEIKO EPSON CORPORATION

Inventor： Isamu Togashi

IPC: B41J25/308 ,  B41J25/00 ,  B41J25/316

Abstract: A liquid ejecting apparatus includes: an apparatus main body; a plurality of liquid ejecting heads that have a nozzle-formed surface; a unit base to which the plurality of liquid ejecting heads are fixed; and a lifting-lowering mechanism that is fixed to the apparatus main body and causes a position of the nozzle-formed surface to be shifted with respect to the apparatus main body. The lifting-lowering mechanisms are disposed in a direction orthogonal to a direction in which the plurality of liquid ejecting heads are aligned, in an in-plane direction of the nozzle-formed surface.

公开(公告)号：US09789685B2

公开(公告)日：2017-10-17

申请号：US15210059

申请日：2016-07-14

Applicant: SEIKO EPSON CORPORATION

Inventor： Taiki Hanagami ,  Isamu Togashi ,  Ryota Kinoshita

IPC: B41J2/045 ,  B41J2/14 ,  B41J2/155 ,  B41J2/16

CPC classification number: B41J2/04541 ,  B41J2/04586 ,  B41J2/14233 ,  B41J2/1433 ,  B41J2/155 ,  B41J2/161 ,  B41J2/162 ,  B41J2/1623 ,  B41J2/1632 ,  B41J2/1634 ,  B41J2002/14241 ,  B41J2202/03 ,  B41J2202/11 ,  B41J2202/19 ,  B41J2202/20

Abstract: A flow path structure which forms a flow path of liquid, includes: a light absorbing member (first substrate) having absorbing properties with respect to laser light; a light transmitting member (second substrate) which is joined to the light absorbing member and has transmitting properties with respect to the laser light; a first flow path (flow path) which is surrounded by a welding interface between the light absorbing member and the light transmitting member; and a second flow path which is formed in a flow path pipe (flow path pipe) which protrudes from a front surface opposite of the welding interface in the light transmitting member, and communicates with the first flow path, in which the flow path pipe is included in a region of the first flow path in a plan view from a direction orthogonal to the welding interface.