公开(公告)号：US20230202185A1

公开(公告)日：2023-06-29

申请号：US18088810

申请日：2022-12-27

Applicant: SEIKO EPSON CORPORATION

Inventor： Kentaro MURAKAMI ,  Katsuhiro OKUBO ,  Takahiro KANEGAE ,  Haruhisa UEZAWA ,  Hiroki KOBAYASHI

IPC: B41J2/175

CPC classification number: B41J2/17563

Abstract: A liquid ejecting head includes: a nozzle row configured by arranging nozzles ejecting a liquid in a first-direction in a second-direction orthogonal to the first-direction; a drive element; and stacked components defining a common liquid chamber communicating with the nozzle row, in which the stacked components include a filter partitioning the common liquid chamber into an upstream common liquid chamber and a downstream common liquid chamber, a first-case defining a first-common-liquid-chamber-portion as a part of the upstream common liquid chamber and stacked on the filter, and a second-case defining a second-common-liquid-chamber-portion as a part of the upstream common liquid chamber and stacked on the first-case, the second-common liquid-chamber-portion is positioned in a direction opposite to the first-direction from the drive element, and a width of the second-common-liquid-chamber-portion in a third-direction orthogonal to the first-direction and the second-direction is longer than a width of the first-common-liquid-chamber-portion in the third-direction.

公开(公告)号：US20220305788A1

公开(公告)日：2022-09-29

申请号：US17701732

申请日：2022-03-23

Applicant: Seiko Epson Corporation

Inventor： Takahiro KANEGAE ,  Katsuhiro OKUBO ,  Kentaro MURAKAMI ,  Shingo TOMIMATSU ,  Hiroki KOBAYASHI ,  Haruhisa UEZAWA

IPC: B41J2/15 ,  B41J2/14

Abstract: A liquid ejecting head includes: a plurality of head chips having a nozzle surface; a thermally conductive holder holding the plurality of head chips; a thermally conductive flow path structure provided with a flow path of a liquid supplied to the plurality of head chips; and a planar heater disposed between the holder and the flow path structure and along a direction parallel to the nozzle surface, in which the heater overlaps the plurality of head chips in a plan view.

公开(公告)号：US20170274670A1

公开(公告)日：2017-09-28

申请号：US15465198

申请日：2017-03-21

Applicant: SEIKO EPSON CORPORATION

Inventor： Haruhisa UEZAWA

IPC: B41J2/19 ,  B41J2/175

CPC classification number: B41J2/19 ,  B41J2/175 ,  B41J2/17563

Abstract: A liquid introduction member includes an inlet into which a liquid is introduced, a filter to filter the liquid introduced from the inlet, a filter chamber in which cross-sectional areas of the flow path increase from the inlet side to the filter side, and a supply flow path to supply the liquid that has passed through the filter to the nozzle side. The filter chamber has at least one guide extending from an inner wall surface of the filter chamber toward the inlet with a space between the guide and the filter, a bottom surface of the guide has a guide surface to guide bubbles which have entered from the inlet, and the guide guides the bubbles into the space by use of the guide surface to spread the bubbles onto the filter toward an outer periphery of the filter.

公开(公告)号：US20130201248A1

公开(公告)日：2013-08-08

申请号：US13756868

申请日：2013-02-01

Applicant: Seiko Epson Corporation

Inventor： Hiroshige OWAKI ,  Katsuhiro OKUBO ,  Haruhisa UEZAWA

IPC: B41J2/125

CPC classification number: B41J2/17563 ,  B41J2/125 ,  B41J2/14024 ,  B41J2/14145 ,  B41J2/14153 ,  B41J2/14201 ,  B41J2002/14362 ,  B41J2002/14419 ,  B41J2202/08

Abstract: A liquid ejecting head includes a head body configured to eject liquid, a flow path member including a liquid flow path for supplying the liquid to the head body, and a circuit substrate held by the flow path member and including a temperature detection unit configured to detect a temperature. The flow path member includes a detection region, which has a thermal resistance lower than a thermal resistance of other regions and which is provided in a part of a partition wall that partitions the liquid flow path. The circuit substrate is fixed to the flow path member in a state in which the temperature detection unit faces the detection region.

公开(公告)号：US20150049148A1

公开(公告)日：2015-02-19

申请号：US14529562

申请日：2014-10-31

Applicant: Seiko Epson Corporation

Inventor： Hiroshige OWAKI ,  Katsuhiro OKUBO ,  Haruhisa UEZAWA

IPC: B41J2/175

CPC classification number: B41J2/17563 ,  B41J2/125 ,  B41J2/14024 ,  B41J2/14145 ,  B41J2/14153 ,  B41J2/14201 ,  B41J2002/14362 ,  B41J2002/14419 ,  B41J2202/08

Abstract: A liquid ejecting head includes a head body configured to eject liquid, a flow path member including a liquid flow path for supplying the liquid to the head body, and a circuit substrate held by the flow path member and including a temperature detection unit configured to detect a temperature. The flow path member includes a detection region, which has a thermal resistance lower than a thermal resistance of other regions and which is provided in a part of a partition wall that partitions the liquid flow path. The circuit substrate is fixed to the flow path member in a state in which the temperature detection unit faces the detection region.

Abstract translation: 一种液体喷射头，包括：喷射液体的喷射头主体，包括用于将液体供给到喷墨头主体的液体流路的流路部件，以及由流路部件保持的电路基板，具有温度检测部， 一个温度计。 流路构件包括检测区域，其具有比其他区域的热阻低的热阻，并且设置在分隔液体流路的分隔壁的一部分中。 电路基板在温度检测单元面向检测区域的状态下固定在流路构件上。

公开(公告)号：US20250142676A1

公开(公告)日：2025-05-01

申请号：US18929024

申请日：2024-10-28

Applicant: SEIKO EPSON CORPORATION

Inventor： Haruhisa UEZAWA ,  Masahiko SATO

IPC: H05B3/26 ,  B41J2/005 ,  B41J2/15

Abstract: A liquid ejecting head includes: a nozzle; and a sheet-shaped heater for heating the liquid to be supplied to the nozzle, and the heater includes a main surface portion having a temperature detection element, an insulative first base member having a first surface and a second surface on an opposite side of the first surface, a resistance wire disposed on the first surface and configured to heat a heating target being a portion of the liquid ejecting head, and relay wiring electrically connected to the temperature detection element and disposed on the second surface, and the resistance wire overlaps the relay wiring when viewed in a thickness direction of the main surface portion.

公开(公告)号：US20220371338A1

公开(公告)日：2022-11-24

申请号：US17663796

申请日：2022-05-17

Applicant: SEIKO EPSON CORPORATION

Inventor： Haruhisa UEZAWA ,  Hiroki KOBAYASHI ,  Katsuhiro OKUBO ,  Kentaro MURAKAMI ,  Takahiro KANEGAE ,  Shingo TOMIMATSU

IPC: B41J11/00

Abstract: A liquid ejecting head includes: a plurality of head chips having nozzles; a holder holding the plurality of head chips; and a planar heater disposed on the holder and heating the holder, in which the heater includes an outer peripheral region along an outer edge of the holder and a middle region positioned inside the outer peripheral region in a plan view, and a heat generation amount per unit time of the outer peripheral region is larger than a heat generation amount per unit time of the middle region.

公开(公告)号：US20140071214A1

公开(公告)日：2014-03-13

申请号：US14079855

申请日：2013-11-14

Applicant: SEIKO EPSON CORPORATION

Inventor： Kaoru KOIKE ,  Toshio KUMAGAI ,  Masaaki ANDO ,  Haruhisa UEZAWA

IPC: B41J2/19

CPC classification number: B41J2/19 ,  B41J2/175 ,  B41J2/17563 ,  B41J2/18 ,  B41J29/38

Abstract: A filter unit includes: a space portion, through which a liquid passes, whose outer cross-sectional shape when cut along the direction orthogonal to the axial direction is circular or polygonal; a filter provided at the surface on one end side of the space portion in the axial direction thereof; a protruding member, provided at the surface on the other end side of the space portion in the axial direction thereof, that protrudes toward a center area of the surface on the one end side of the space portion; an inflow channel that allows the liquid to flow into the space portion from a direction tangential to the side circumferential surface of the space portion; and an outflow channel that allows the liquid to pass through the filter and flow out from the space portion.

Abstract translation: 过滤器单元包括：沿着与轴向正交的方向切割时的外部横截面形状为圆形或多边形的液体通过的空间部分; 过滤器，其设置在所述空间部的轴向的一端侧的面上; 所述突出部件设置在所述空间部的轴向的另一端侧的面上，朝向所述空间部的一端侧的所述表面的中心区域突出; 流入通道，​​其允许液体从与空间部分的侧周面相切的方向流入空间部分; 以及允许液体通过过滤器并从空间部分流出的流出通道。

公开(公告)号：US20220305785A1

公开(公告)日：2022-09-29

申请号：US17701746

申请日：2022-03-23

Applicant: Seiko Epson Corporation

Inventor： Takahiro KANEGAE ,  Katsuhiro OKUBO ,  Kentaro MURAKAMI ,  Shingo TOMIMATSU ,  Hiroki KOBAYASHI ,  Haruhisa UEZAWA

IPC: B41J2/14 ,  B41J2/155 ,  B41J2/15

Abstract: A liquid ejecting head includes: head chips including a first-head-chip and a second-head-chip; a holder holding the head chips; and a heater along a direction parallel to a nozzle surface. The first-head-chip and the second-head-chip are disposed to be offset from each other in both a first-direction and a second-direction parallel to the nozzle surface and intersecting with each other. When a first-side is one of the four sides of a virtual rectangle circumscribing the aggregate of the head chips and a second-side and a third-side are coupled to both ends of the first-side, the first-head-chip is in contact with the first-side and the third-side and the second-head chip is in contact with the second-side. The heater overlaps the head chips. A first-region surrounded by the first-side, the second-side, the first-head-chip, and the second-head-chip includes a first-outside-part positioned outside the outer edge of the heater.

公开(公告)号：US20130233939A1

公开(公告)日：2013-09-12

申请号：US13782199

申请日：2013-03-01

Applicant: SEIKO EPSON CORPORATION

Inventor： Haruhisa UEZAWA

IPC: B05B17/06

CPC classification number: B05B17/0615 ,  B41J2/14274 ,  B41J2202/12

Abstract: A ink jet type recording head which circulates ink between a first manifold and a second manifold via a pressure generation chamber is provided, the flow path member has a first and second bypass flow paths which connect the first and second manifolds, respectively in two locations of one end side and the other end side of a nozzle row on the outside of the nozzle row on which the nozzle openings are formed, and a relationship between a flow path resistance R of the first and second bypass flow paths, and a flow path resistance r of a flow path portion including the pressure generation chamber which connects the first and second manifolds is R

Abstract translation: 提供了一种通过压力产生室在第一歧管和第二歧管之间循环墨水的喷墨式记录头，流路构件具有第一和第二旁路流动路径，其将第一和第二歧管分别连接在 在其上形成有喷嘴开口的喷嘴列的外侧上的喷嘴列的一端侧和另一端侧，以及第一和第二旁路流路的流路阻力R与流路阻力 包括连接第一和第二歧管的压力产生室的流路部分的r是R