公开(公告)号：US11345151B2

公开(公告)日：2022-05-31

申请号：US17031617

申请日：2020-09-24

Applicant: SEIKO EPSON CORPORATION

Inventor： Shotaro Tamai ,  Nobuhiro Naito ,  Yuma Fukuzawa ,  Akinori Taniuchi ,  Shohei Mizuta

IPC: B41J2/14

Abstract: The communication plate has a first layer that defines a wall surface of the communication flow channel, a second layer stacked on a side of the first layer opposite to the wall surface, and a third layer stacked on a side of the second layer opposite to the first layer, and the thermal expansion coefficient of the second layer is smaller than the thermal expansion coefficient of the first layer and is smaller than the thermal expansion coefficient of the third layer.

公开(公告)号：US11007789B2

公开(公告)日：2021-05-18

申请号：US16721192

申请日：2019-12-19

Applicant: SEIKO EPSON CORPORATION

Inventor： Kazuaki Uchida ,  Yuma Fukuzawa

IPC: B41J2/18 ,  B41J2/14

Abstract: A liquid ejecting head including a plurality of nozzles, a row of individual flow paths that includes a plurality of individual flow paths arranged in parallel along a second axis orthogonal to the first axis when viewed in a direction of the first axis, and a common liquid chamber that is commonly in communication with the plurality of individual flow paths. In the liquid ejecting head, the plurality of individual flow paths include a first individual flow path and a second individual flow path that are adjacent to each other in the row of individual flow paths, and the level of a first opening that is a connection port between the common liquid chamber and the first individual flow path and the level of a second opening that is a connection port between the common liquid chamber and the second individual flow path are different.

公开(公告)号：US10857795B2

公开(公告)日：2020-12-08

申请号：US16453028

申请日：2019-06-26

Applicant: SEIKO EPSON CORPORATION

Inventor： Toshiro Murayama ,  Yuma Fukuzawa ,  Shunya Fukuda ,  Kazuaki Uchida ,  Shunsuke Watanabe ,  Noriaki Okazawa

IPC: B41J2/14

Abstract: A head includes a flow path substrate including a flow path of the liquid in the flow path substrate, a nozzle plate which is attached to the flow path substrate and in which the nozzle is formed, a pressure chamber substrate that is attached to a location facing the nozzle plate with the flow path substrate interposed therebetween and that has a pressure chamber, and a pressure generation portion that operates according to an electrical signal from a wiring substrate coupled to an electrode provided on the pressure chamber substrate and that changes a pressure of the pressure chamber to eject the liquid from the nozzle, in which the nozzle plate and the wiring substrate are disposed such that the nozzle plate does not overlap a coupling portion between the wiring substrate and the electrode when viewed in a thickness direction of the flow path substrate.

公开(公告)号：US10723129B2

公开(公告)日：2020-07-28

申请号：US16253806

申请日：2019-01-22

Applicant: SEIKO EPSON CORPORATION

Inventor： Katsutomo Tsukahara ,  Motoki Takabe ,  Yuma Fukuzawa

IPC: B41J2/14

Abstract: Disclosed is a liquid ejecting head including a flow passage forming section in which a pressure chamber which communicates with a nozzle ejecting liquid and a circulation liquid chamber which communicates with the pressure chamber to circulate the liquid are formed, a driving element that generates pressure change in the pressure chamber, a circuit board for driving the driving element, and a connecting terminal that electrically connects the driving element with the circuit board, in which the connecting terminal overlaps the circulation liquid chamber in a plan view.

公开(公告)号：US09962935B2

公开(公告)日：2018-05-08

申请号：US15658872

申请日：2017-07-25

Applicant: SEIKO EPSON CORPORATION

Inventor： Motoki Takabe ,  Shiro Yazaki ,  Yuma Fukuzawa ,  Eiju Hirai

IPC: B41J2/14 ,  H01L41/047 ,  H01L41/08 ,  H01L41/083 ,  H01L41/09 ,  H01L41/187 ,  H01L41/332

CPC classification number: B41J2/14274 ,  B41J2/14233 ,  B41J2002/14241 ,  B41J2202/11 ,  H01L41/0471 ,  H01L41/081 ,  H01L41/083 ,  H01L41/0838 ,  H01L41/09 ,  H01L41/1876 ,  H01L41/332

Abstract: An empty chamber component includes a pressure chamber formation substrate where a pressure chamber as an empty chamber is defined and a communication substrate bonded to the pressure chamber formation substrate. A piezoelectric element is provided on one side of the pressure chamber formation substrate. A flexible surface is located between the piezoelectric element and the pressure chamber. Empty portions are defined by the communication substrate closing recessed portions in the pressure chamber formation substrate. The empty portions are formed at positions where ends of the active section of the piezoelectric element pass through the empty portions in plan view.

公开(公告)号：US09340019B2

公开(公告)日：2016-05-17

申请号：US14833942

申请日：2015-08-24

Applicant: SEIKO EPSON CORPORATION

Inventor： Eiju Hirai ,  Shiro Yazaki ,  Motoki Takabe ,  Yuma Fukuzawa

IPC: B41J2/045 ,  B41J2/14 ,  B41J2/16 ,  H01L41/047

CPC classification number: B41J2/14274 ,  B41J2/14201 ,  B41J2/14233 ,  B41J2/1612 ,  B41J2002/14491 ,  B41J2202/11 ,  H01L41/047

Abstract: At an area corresponding to a pressure chamber, the width of a lower electrode film in a nozzle row direction is narrower than the width of the pressure chamber in the same direction. A vibrating plate at the area corresponding to a pressure chamber includes an area P1, an area P2, and an area P3. The area P1 is an area on which the piezoelectric layer to be an activation portion is stacked. The area P2 is an area on which the piezoelectric layer to be an inactivation portion is stacked. The area P3 is an area on which the piezoelectric layer is not stacked. When the thicknesses of the vibrating plate at the areas P1, P2 and P3 are set to, respectively, t1, t2, and t3, the following expression is satisfied: t1>t2≧t3  (1).

公开(公告)号：US08998380B2

公开(公告)日：2015-04-07

申请号：US14100291

申请日：2013-12-09

Applicant: Seiko Epson Corporation

Inventor： Yuma Fukuzawa ,  Hiroshige Owaki

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

CPC classification number: B41J2/14233 ,  B41J2202/11 ,  B41J2202/20

Abstract: A liquid ejecting head includes a nozzle plate, a flow path forming substrate, and a communication plate between the nozzle plate and the substrate and having a communication hole connecting a nozzle and a first opening of a pressure chamber. The first opening extends in a direction perpendicular to an arrangement direction of the pressure chambers. The first opening has a narrowed portion close to the communication hole. The communication hole has at least three edge lines which extend in a penetration direction. The communication plate is bonded to the substrate such that the ends of the edge lines at a surface close to the substrate are covered with the substrate that defines the narrowed portion on a surface close to the communication plate.

Abstract translation: 液体喷射头包括喷嘴板，流路形成基板和喷嘴板与基板之间的连通板，并具有连接喷嘴和压力室的第一开口的连通孔。 第一开口在与压力室的排列方向垂直的方向上延伸。 第一开口具有靠近通孔的狭窄部分。 连通孔具有沿穿透方向延伸的至少三条边缘线。 通信板结合到基板上，使得靠近基板的表面的边缘线的端部被覆盖在靠近通信板的表面上限定变窄部分的基板。

公开(公告)号：US11654681B2

公开(公告)日：2023-05-23

申请号：US17159236

申请日：2021-01-27

Applicant: SEIKO EPSON CORPORATION

Inventor： Yoichi Naganuma ,  Yuma Fukuzawa ,  Shotaro Tamai

IPC: B41J2/14 ,  B41J2/18 ,  B41J2/19

CPC classification number: B41J2/14233 ,  B41J2/18 ,  B41J2/19 ,  B41J2202/07 ,  B41J2202/11 ,  B41J2202/12

Abstract: Wall surfaces of the nozzle channel include a first wall surface which extends in the first direction and in which the nozzle is provided and a second wall surface which extends in the first direction and is opposite to the first wall surface, wall surfaces of the first communication channel include a third wall surface which extends in the second direction and a distance from which to the nozzle in the first direction is longest and a fourth wall surface which extends in the second direction and is opposite to the third wall surface, and a fifth wall surface which extends in a third direction set between the first direction and the second direction is provided between the second wall surface and the fourth wall surface.

公开(公告)号：US10987928B2

公开(公告)日：2021-04-27

申请号：US16472781

申请日：2017-12-06

Applicant: SEIKO EPSON CORPORATION

Inventor： Katsutomo Tsukahara ,  Yuma Fukuzawa

IPC: B41J2/14 ,  B41J2/18

Abstract: A liquid in the vicinity of a nozzle is efficiently circulated. A liquid ejecting head includes: a nozzle plate provided with a first nozzle; a flow channel forming unit provided with a first pressure, a first communication channel through which the first nozzle and the first pressure chamber communicate with each other, and a circulating liquid chamber. The nozzle plate is provided with a first circulation channel through which the first communication channel and the circulating liquid chamber communicate with each other.

公开(公告)号：US09533505B2

公开(公告)日：2017-01-03

申请号：US14830561

申请日：2015-08-19

Applicant: SEIKO EPSON CORPORATION

Inventor： Shunsuke Watanabe ,  Yuma Fukuzawa ,  Katsumi Enomoto ,  Hiroaki Okui ,  Yoshinao Miyata ,  Satoshi Oguchi ,  Fujio Akahane

IPC: B41J2/165 ,  B41J2/055 ,  B41J2/14 ,  B41J2/16

CPC classification number: B41J2/16535 ,  B41J2/055 ,  B41J2/14233 ,  B41J2/1606 ,  B41J2/16538 ,  B41J2/16552 ,  B41J2002/14241 ,  B41J2002/14362 ,  B41J2002/14419

Abstract: Provided is a liquid ejecting apparatus capable of suppressing ink from remaining on a nozzle surface.A liquid ejecting apparatus includes a head unit 16 capable of ejecting a liquid from a nozzle 27 provided in a nozzle surface 22a of a nozzle plate 22, an anchoring plate 17 in which the head unit 16 is anchored and that is provided with an opening region 17a that exposes the nozzle surface 22, and a wiper member 12 that wipes an anchoring plate exposed-surface 17b located on the opposite side of the head unit 16 of the anchoring plate 17 and the nozzle surface 22a. When an angle of contact between the nozzle surface 22a and the liquid is taken as θn, an angle of contact between the anchoring plate exposed-surface 17b and the liquid is taken as θs, and an angle of contact between the wiper member 12 and the liquid is taken as θw, the relationship θn>θs>θw>90° is fulfilled.

Abstract translation: 液体喷射装置包括：头部单元16，其能够从设置在喷嘴板22的喷嘴表面22a中的喷嘴27喷射液体;锚固板17，其中头部单元16被锚定在其中，并且设置有开口区域 暴露喷嘴表面22的刮板部件12以及擦拭位于固定板17的头部单元16的相对侧上的锚固板暴露表面17b和喷嘴表面22a的擦拭器部件12。 当喷嘴表面22a和液体之间的接触角取为θn时，锚定板暴露表面17b与液体之间的接触角取为θ，并且擦拭器构件12与 液体取为θw，满足关系θn>θs>θw> 90°。