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公开(公告)号：US20230294400A1
公开(公告)日：2023-09-21
申请号：US18185123
申请日：2023-03-16
Applicant: SEIKO EPSON CORPORATION
Inventor： Yoichi NAGANUMA , Yuma FUKUZAWA , Shohei MIZUTA , Naohiro NAKAGAWA
IPC: B41J2/14
CPC classification number: B41J2/14201
Abstract: A liquid ejecting head includes a pressure chamber substrate having a pressure chamber, a drive element, a communication substrate having a supply communication flow path and a nozzle communication flow path at a position different from the supply communication flow path, and a coupling substrate having a supply port and the supply communication flow path and a discharge port, in which the pressure chamber substrate has a partition wall, and the communication substrate includes a first region bonded to the coupling substrate and overlapping the pressure chamber between the supply communication flow path and the nozzle communication flow path when viewed in a thickness direction, and a second region bonded to the coupling substrate and overlapping the partition wall at a position adjacent to the first region via an opening of the supply communication flow path when viewed in the thickness direction of the pressure chamber substrate.
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公开(公告)号：US20220281223A1
公开(公告)日：2022-09-08
申请号：US17653066
申请日：2022-03-01
Applicant: Seiko Epson Corporation
Inventor： Shotaro TAMAI , Takanori AIMONO , Takahiro KATAKURA , Yuma FUKUZAWA
IPC: B41J2/14
Abstract: A liquid ejecting head includes: a nozzle array including nozzles via which liquid is to be discharged and which are arrayed in a first direction; a nozzle passage that leads to a nozzle and extends in a second direction intersecting the first direction; a first pressure chamber; a second pressure chamber disposed adjacent to the first pressure chamber in the first direction; a first communicating passage via which the first pressure chamber communicates with an interior of the nozzle passage and which extends in a third direction orthogonal to the first and second directions; and a second communicating passage via which the second pressure chamber communicates with the interior of the nozzle passage and which extends in the third direction. As viewed from the second direction, an inner wall surface of the first communicating passage positioned on a side of the second communicating passage includes a first inclined surface that extends in a fourth direction intersecting the first and third directions.
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公开(公告)号：US20220234356A1
公开(公告)日：2022-07-28
申请号：US17659049
申请日：2022-04-13
Applicant: SEIKO EPSON CORPORATION
Inventor： Yoichi NAGANUMA , Yuma FUKUZAWA , Shotaro TAMAI
Abstract: The nozzle channel includes a first portion that extends in the first direction and communicates with the first communication channel and a second portion that extends in a third direction crossing the first direction and orthogonal to the second direction and communicates with the first portion, and an angle formed between the first direction and the third direction is larger than 0° and smaller than 90°.
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公开(公告)号：US20210339528A1
公开(公告)日：2021-11-04
申请号：US17377887
申请日：2021-07-16
Applicant: SEIKO EPSON CORPORATION
Inventor： Yuma FUKUZAWA
Abstract: First and second individual flow paths coupling a first common liquid chamber to a second common liquid chamber are arranged side by side, and each individual flow path is provided with first and second pressure chambers. At least a part of the first individual flow path is provided in a space overlapping a region between the adjacent second pressure chambers when viewed in a Z axis direction, the space not overlapping the second pressure chamber when viewed in a Y axis direction.
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公开(公告)号：US20210260875A1
公开(公告)日：2021-08-26
申请号：US17177604
申请日：2021-02-17
Applicant: SEIKO EPSON CORPORATION
Inventor： Yoichi NAGANUMA , Yuma FUKUZAWA , Shotaro TAMAI
Abstract: the nozzle channel includes a first portion that extends in the first direction and communicates with the first communication channel and a second portion that extends in a third direction crossing the first direction and orthogonal to the second direction and communicates with the first portion, and an angle formed between the first direction and the third direction is larger than 0° and smaller than 90°.
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公开(公告)号：US20210162752A1
公开(公告)日：2021-06-03
申请号：US17108381
申请日：2020-12-01
Applicant: SEIKO EPSON CORPORATION
Inventor： Yuma FUKUZAWA , Shotaro TAMAI , Yoichi NAGANUMA , Akira MIYAGISHI , Kazuaki UCHIDA
Abstract: A liquid ejecting head including: an individual flow path row in which a plurality of individual flow paths communicating with a nozzle that ejects a liquid in a first axis direction are arranged in parallel along a second axis orthogonal to a first axis, and a first common liquid chamber communicating with the plurality of individual flow paths, in which each of the plurality of individual flow paths has a pressure chamber that stores a liquid.
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7.发明申请
公开(公告)号：US20200001608A1
公开(公告)日：2020-01-02
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.
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公开(公告)号：US20180086079A1
公开(公告)日：2018-03-29
申请号：US15668981
申请日：2017-08-04
Applicant: SEIKO EPSON CORPORATION
Inventor： Hitoshi TAKAAI , Yuma FUKUZAWA
CPC classification number: B41J2/1635 , B41J2/04506 , B41J2/04551 , B41J2/04581 , B41J2/14233 , B41J2/161 , B41J2002/14419 , B41J2002/14491
Abstract: Provided is a method for manufacturing a liquid ejecting head which includes a plurality of chips, each of which includes a plurality of segments, each segment including a pressure generating chamber communicating with a nozzle opening through which liquid is discharged, a diaphragm which is a portion of the pressure generating chamber, and a pressure generating unit causing a pressure change in the pressure generating chamber through the diaphragm, the method including measuring natural frequencies of the plurality of segments included in each of the chips, classifying the chips into ranks using the mode value of the natural frequencies of the chips as a reference, and manufacturing the liquid ejecting head which includes the chips selected based on the ranks.
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公开(公告)号：US20150231883A1
公开(公告)日：2015-08-20
申请号：US14613669
申请日：2015-02-04
Applicant: SEIKO EPSON CORPORATION
Inventor： Eiju HIRAI , Yuma FUKUZAWA , Chikara KOJIMA
IPC: B41J2/14
CPC classification number: B41J2/161 , B41J2/14233 , B41J2002/14258 , B41J2002/14266 , B41J2002/14491 , B41J2202/11
Abstract: A liquid ejecting head is provided. A lower electrode layer of the liquid ejecting head is divided into separate lower electrodes corresponding to respective pressure chamber spaces. An upper electrode layer is a continuous electrode. Each of the separate lower electrodes has (i) a wide portion whose width is smaller than the width of a pressure chamber space and (ii) a narrow portion whose width is smaller than the wide portion. The wide portion is positioned in a region that corresponds to the opening of the pressure chamber space and includes the center, when seen in the direction of the length of the pressure chamber space, of the pressure chamber space, and the narrow portion continuously extends from the wide portion to a region that corresponds to outside of the opening of the pressure chamber space in the direction of the length of the pressure chamber space.
Abstract translation: 提供液体喷射头。 液体喷射头的下部电极层被分成对应于各个压力室空间的分开的下部电极。 上电极层是连续电极。 每个分离的下电极具有（i）宽度小于压力室空间的宽度的宽部分和（ii）宽度小于宽部分的窄部分。 宽部位于对应于压力室空间的开口的区域中，并且当从压力室空间的长度方向看时，包括中心，压缩室空间的狭窄部分连续地从 对应于在压力室空间的长度方向上对应于压力室空间的开口外部的区域的宽部分。
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公开(公告)号：US20230249457A1
公开(公告)日：2023-08-10
申请号：US18163034
申请日：2023-02-01
Applicant: SEIKO EPSON CORPORATION
Inventor： Takanori AIMONO , Yuma FUKUZAWA , Shohei MIZUTA , Shotaro TAMAI , Shun KATSUIE
IPC: B41J2/14
CPC classification number: B41J2/14 , B41J2002/14338
Abstract: A liquid ejecting head includes: a nozzle; first to fourth pressure chambers; a communication flow path communicating between the nozzle and the first to fourth pressure chambers; first to fourth driving elements; a first common liquid chamber communicating with the first and the second pressure chambers; and a second common liquid chamber communicating with the third and the fourth pressure chambers. A first joining position from the first pressure chamber and the second pressure chamber to the nozzle is closer to end portions of the first pressure chamber and the second pressure chamber on a nozzle side than to the nozzle, and a second joining position from the third pressure chamber and the fourth pressure chamber to the nozzle is closer to end portions of the third pressure chamber and the fourth pressure chamber on the nozzle side than to the nozzle.
