公开(公告)号：US20210370677A1

公开(公告)日：2021-12-02

申请号：US17335230

申请日：2021-06-01

Applicant: Seiko Epson Corporation

Inventor： Hiroaki OKUI ,  Eiichiro WATANABE ,  Shun KATSUIE

IPC: B41J2/14 ,  B41J2/175

Abstract: A liquid ejecting head that has an ejection surface configured to eject a liquid includes a plurality of head chips that are long in a first direction. The plurality of head chips are arranged inside a virtual parallelogram including a first virtual side and a second virtual side that are in contact with at least one of the plurality of head chips and that extend in the first direction, and a third virtual side and a fourth virtual side that are in contact with at least one of the plurality of head chips and that extend in a second direction intersecting the first direction, and the ejection surface is not overlapped with an acute-angled portion of the virtual parallelogram when the ejection surface is viewed in a normal direction of the ejection surface.

公开(公告)号：US20210023842A1

公开(公告)日：2021-01-28

申请号：US16935473

申请日：2020-07-22

Applicant: SEIKO EPSON CORPORATION

Inventor： Eiichiro WATANABE

IPC: B41J2/145

Abstract: A liquid ejecting head includes a nozzle plate provided with nozzles configured to eject a liquid in a first direction; a case provided in a second direction that is opposite to the first direction with respect to the nozzle plate, and having a flow path pipe that defines a first flow path through which the liquid flows and which protrudes in the second direction; a circuit substrate provided in the second direction with respect to the case and having a first through-hole through which the flow path pipe penetrates; a first seal member provided in the second direction with respect to the circuit substrate; a holder provided in the second direction with respect to the first seal member and having therein a second flow path communicating with the first flow path; a screw fixing the holder to the case; and an adhesive fixing the holder to the case.

公开(公告)号：US20170232750A1

公开(公告)日：2017-08-17

申请号：US15432137

申请日：2017-02-14

Applicant: SEIKO EPSON CORPORATION

Inventor： Fumiya TAKINO ,  Eiichiro WATANABE ,  Kazunori MORI

IPC: B41J2/165

CPC classification number: B41J2/16535 ,  B41J2/16517 ,  B41J2/16538 ,  B41J2/16585 ,  B41J2/16588 ,  B41J25/316

Abstract: A liquid ejecting apparatus includes a liquid ejecting head that has a nozzle opening surface in which the nozzles open, a displacing mechanism formed to change a posture of the liquid ejecting head between a first posture in which the nozzle opening surface is inclined with respect to the horizontal and a second posture in which an inclination of the nozzle opening surface is smaller than the inclination of the nozzle opening surface in the first posture, and a wiping member to wipe the liquid ejecting head. On the nozzle opening surface, if a vertical lower end in the first posture is a first end and a vertical upper end in the first posture is a second end, the wiping member wipes the liquid ejecting head from the first end side toward the second end side when the liquid ejecting head is in the second posture.

公开(公告)号：US20160009077A1

公开(公告)日：2016-01-14

申请号：US14795287

申请日：2015-07-09

Applicant: SEIKO EPSON CORPORATION

Inventor： Eiichiro WATANABE

IPC: B41J2/045

CPC classification number: B41J2/0451 ,  B41J2/04551 ,  B41J2/04581 ,  B41J2/04593 ,  B41J2/04596 ,  B41J2/14274 ,  B41J2/2125 ,  B41J2002/14354

Abstract: When the discharging abnormalities detection circuit detects a state in which the ink droplet is not discharged from the first nozzle which discharges a relatively large ink droplet, a second recording mode is set, and in a recording process, the ink droplet discharges from a second nozzle without discharging the ink droplet from a first nozzle.

Abstract translation: 当排出异常检测电路检测到墨滴未从排出较大墨滴的第一喷嘴排出的状态时，设定第二记录模式，并且在记录处理中，墨滴从第二喷嘴 而不从第一喷嘴排出墨滴。

公开(公告)号：US20240100843A1

公开(公告)日：2024-03-28

申请号：US18475973

申请日：2023-09-27

Applicant: SEIKO EPSON CORPORATION

Inventor： Eiichiro WATANABE

IPC: B41J2/175 ,  B41J2/14 ,  B41J2/145

CPC classification number: B41J2/17513 ,  B41J2/14274 ,  B41J2/1433 ,  B41J2/145 ,  B41J2002/17516

Abstract: An individual flow path that communicates with a nozzle, a supply side common liquid chamber for supplying ink to the nozzle, a recovery side common liquid chamber for recovering the ink not discharged from the nozzle, an inlet that communicates with the supply side common liquid chamber, an outlet that communicates with the recovery side common liquid chamber, a first bypass flow path, and a second bypass flow path are provided, in which the inlet and the outlet are disposed between the first bypass flow path and the second bypass flow path, and a flow path resistance of the first bypass flow path and a flow path resistance of the second bypass flow path are different from each other.

公开(公告)号：US20230373210A1

公开(公告)日：2023-11-23

申请号：US18321206

申请日：2023-05-22

Applicant: SEIKO EPSON CORPORATION

Inventor： Yu HASEGAWA ,  Hiroaki OKUI ,  Eiichiro WATANABE ,  Yuma FUKUZAWA

IPC: B41J2/14

CPC classification number: B41J2/14 ,  B41J2202/08 ,  B41J2202/13 ,  B41J2002/14491

Abstract: A liquid ejecting head includes an introduction portion for introducing a gas supplied, a discharge portion for discharging the gas, and drive circuits provided in each of head chips, in which the drive circuits include a first drive circuit for driving the first head chip and a second drive circuit for driving the second head chip, a gas path through which the gas flows from the introduction portion to the discharge portion includes a first path coupled to the introduction portion, a second path coupled to the discharge portion, a first branch path coupling the first path and the second path, and a second branch path coupling the first path and the second path so as not to pass through the first branch path, the first drive circuit is disposed in the first branch path, and the second drive circuit is disposed in the second branch path.

公开(公告)号：US20220242119A1

公开(公告)日：2022-08-04

申请号：US17588605

申请日：2022-01-31

Applicant: Seiko Epson Corporation

Inventor： Hiroaki OKUI ,  Eiichiro WATANABE ,  Takahiro KANEGAE ,  Kazuaki UCHIDA

IPC: B41J2/14

Abstract: A liquid ejecting head includes piezoelectric elements for ejecting liquid from nozzles, pressure chambers in communication with the nozzles, individual supply flow passages for supplying the liquid to the nozzles, individual collection flow passages for collecting the liquid not ejected from the nozzles, a diaphragm that defines a wall surface of the pressure chambers and deforms by driving the piezoelectric element, a flexible substrate having a drive circuit electrically coupled to the piezoelectric elements, and a heat release member that is either in contact with an surface of the flexible substrate that faces away from the drive circuit, or in contact with the drive circuit, and conducts heat of the drive circuit to the diaphragm. The heat release member is disposed closer to the individual supply flow passage than to the individual collection flow passage.

公开(公告)号：US20220219469A1

公开(公告)日：2022-07-14

申请号：US17573668

申请日：2022-01-12

Applicant: Seiko Epson Corporation

Inventor： Hiroaki OKUI ,  Eiichiro WATANABE

IPC: B41J25/34

Abstract: A liquid ejecting apparatus includes a liquid ejecting head, a holding member holding the liquid ejecting head, a fixing member including a head portion, an engaging portion, and a shaft portion that couples the head portion to the engaging portion, and an elastic member including a first opening into which the shaft portion is inserted. One of the liquid ejecting head and the holding member includes a second opening into which the shaft portion is inserted, and the other one of the liquid ejecting head and the holding member includes a first engaged portion to be engaged with the engaging portion. The liquid ejecting head is fixed to the holding member by the engaging portion being brought into engagement with the first engaged portion such that the first opening and the second opening are disposed between the head portion and the engaging portion.

公开(公告)号：US20220024207A1

公开(公告)日：2022-01-27

申请号：US17385541

申请日：2021-07-26

Applicant: Seiko Epson Corporation

Inventor： Eiichiro WATANABE

IPC: B41J2/145 ,  B41J2/14

Abstract: A liquid ejecting head that has substrates stacked, includes individual flow paths respectively communicating with nozzles, a supply common liquid chamber and a discharge common liquid chamber that communicate with the individual flow paths, and a bypass flow path coupling the supply common liquid chamber to the discharge common liquid chamber, in which the supply common liquid chamber and the discharge common liquid chamber are formed in the same layer among the substrates, and the bypass flow path has a portion formed in a layer different from the supply common liquid chamber and the discharge common liquid chamber, among the substrates.

公开(公告)号：US20200171823A1

公开(公告)日：2020-06-04

申请号：US16691024

申请日：2019-11-21

Applicant: SEIKO EPSON CORPORATION

Inventor： Eiichiro WATANABE

IPC: B41J2/14 ,  B41J2/055

Abstract: A liquid ejecting head includes a nozzle formation surface disposed between a first roller and a second roller in a medium transport direction, a first positioning portion used for positioning with respect to a first head holding member provided in a first liquid ejecting apparatus in which a distance between the first roller and the second roller in the medium transport direction is set to a first distance, and a second positioning portion used for positioning with respect to a second head holding member provided in a second liquid ejecting apparatus in which the distance between the first roller and the second roller in the medium transport direction is set to a second distance being different than the first distance.