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公开(公告)号：US11691418B2
公开(公告)日：2023-07-04
申请号：US17235454
申请日：2021-04-20
Applicant: SEIKO EPSON CORPORATION
Inventor： Kazuaki Uchida
CPC classification number: B41J2/055 , B41J2/1433 , B41J2/14201 , B41J2202/12
Abstract: A liquid ejecting head includes nozzles configured to eject liquid, pressure chambers communicating with the nozzles, the pressure chambers being configured to generate pressure for ejecting the liquid, a first liquid chamber configured to store the liquid to be supplied to the pressure chambers, a second liquid chamber configured to store the liquid that passed through the pressure chambers, first communication paths communicating with the pressure chambers from the first liquid chamber, second communication paths respectively communicating with the second liquid chamber from between the pressure chambers and the nozzles in which flow path resistance in the first communication paths is higher than flow path resistance in the second communication paths.
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公开(公告)号：US20230036902A1
公开(公告)日：2023-02-02
申请号：US17965189
申请日：2022-10-13
Applicant: FUJIFILM Dimatix, Inc.
Inventor： Christoph Menzel , Kevin von Essen , Steven H. Barss , Mats G. Ottosson , Darren T. Imai
Abstract: A fluid ejection apparatus includes a plurality of fluid ejectors. Each fluid ejector includes a pumping chamber, and an actuator configured to cause fluid to be ejected from the pumping chamber. The fluid ejection apparatus includes a feed channel fluidically connected to each pumping chamber; and at least one compliant structure formed in a surface of the feed channel. The at least one compliant structure has a lower compliance than the surface of the feed channel.
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公开(公告)号：US20220332108A1
公开(公告)日：2022-10-20
申请号：US17810933
申请日：2022-07-06
Applicant: SEIKO EPSON CORPORATION
Inventor： Hiromu MIYAZAWA , Kinya OZAWA , Jiro KATO
Abstract: In a method of controlling a liquid ejecting apparatus, where the liquid ejecting apparatus includes a pressure chamber that communicates with a nozzle that ejects a liquid, a drive element that changes a pressure of the liquid in the pressure chamber, and a drive circuit that supplies the drive element with an ejection pulse that generates a change in the pressure that ejects the liquid from the nozzle, the method includes specifying a viscosity of the liquid in the nozzle and a surface tension of the liquid in the nozzle from a residual vibration when the pressure of the liquid in the pressure chamber is changed, and controlling a waveform of the ejection pulse according to the viscosity and the surface tension.
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公开(公告)号：US20210070042A1
公开(公告)日：2021-03-11
申请号：US16921852
申请日：2020-07-06
Applicant: TOSHIBA TEC KABUSHIKI KAISHA
Inventor： Li XU , Ryutaro KUSUNOKI
Abstract: According to one or more embodiments, a liquid discharge head comprises a substrate, a nozzle plate, and a damper member. The substrate comprises a plurality of pressure chambers. The nozzle plate is provided on a first surface of the substrate and comprises a plurality of nozzles, each of the plurality of nozzles aligned with a corresponding one of the plurality of pressure chambers. The damper member is provided on a second surface of the substrate and comprises a pressure wave absorbing material.
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公开(公告)号：US20210023845A1
公开(公告)日：2021-01-28
申请号：US17067095
申请日：2020-10-09
Applicant: SEIKO EPSON CORPORATION
Inventor： Shiro YAZAKI
Abstract: A liquid ejecting head includes a flow path forming substrate in which a pressure generating chamber which communicates with a nozzle which ejects a liquid is formed by a partitioning wall, and a piezoelectric actuator in which a first electrode, a piezoelectric layer, and a second electrode are laminated, in which the piezoelectric layer includes a region which is interposed between the first electrode and the second electrode in a lamination direction, and in which when viewed in plan view from the lamination direction, the region overlaps at least a portion of the edges of each side of an opening of the pressure generating chamber on the piezoelectric actuator side and does not overlap one of the first electrode and the second electrode in at least a portion of the opening.
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Patent Agency Ranking
公开(公告)号：US10850519B2
公开(公告)日：2020-12-01
申请号：US16582531
申请日：2019-09-25
Applicant: SEIKO EPSON CORPORATION
Inventor： Ikuya Miyazawa
Abstract: A liquid ejecting head including a first substrate in which a drive element that ejects a liquid from a nozzle, and a first wire electrically coupled to the drive element are formed, a second substrate in which an opposing surface that opposes the first substrate is adhered to the first substrate with an adhesive agent, a second wire being formed in the second substrate, and a protrusion configured to elastically deform, the protrusion being formed between the first substrate and the second substrate and electrically coupling the first wire and the second wire to each other. In the liquid ejecting head, a swelling ratio of the protrusion is larger than a swelling ratio of the adhesive agent.
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公开(公告)号：US10751991B2
公开(公告)日：2020-08-25
申请号：US16144362
申请日：2018-09-27
Applicant: TOSHIBA TEC KABUSHIKI KAISHA
Inventor： Masashi Seki
Abstract: An inkjet head includes a nozzle plate substrate having a nozzle for ejecting ink toward a recording medium, and an oil repellent layer on a surface of the nozzle plate substrate, the surface facing the recording medium. The oil repellent layer comprises a fluorine-based compound in which neighboring molecules are cross-linked in a direction parallel to the surface, and cross-links of the neighboring molecules are resistant to structural change when subjected to rubbing by an ink wiping blade.
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公开(公告)号：US20200247120A1
公开(公告)日：2020-08-06
申请号：US16709211
申请日：2019-12-10
Applicant: Brother Kogyo Kabushiki Kaisha
Inventor： Taisuke Mizuno
Abstract: There is provided a liquid discharge head including: a plurality of pressure chambers including pressure chambers aligned in a first direction orthogonal to a vertical direction so as to form a first pressure chamber group, and pressure chambers aligned in the first direction so as to form a second pressure chamber group arranged side to side relative to the first pressure chamber group in a second direction; a return channel extending in the first direction; and return connecting channels each connecting the return channel and one of the plurality of pressure chambers to each other, wherein a height of an upper surface of each of the return connecting channels is not less than a height of an upper surface of one of the plurality of pressure chambers which is connected to the return channel by each of the return connecting channels.
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公开(公告)号：US10730292B2
公开(公告)日：2020-08-04
申请号：US16009453
申请日：2018-06-15
Applicant: RICOH COMPANY, LTD.
Inventor： Tomohiko Kohda , Satoru Tobita , Ryo Kasahara , Ryohta Matsufuji , Norimasa Sohgawa
Abstract: A liquid discharge head includes a plurality of nozzles, a plurality of individual liquid chambers, a common liquid chamber, a deformable damper, and a damper chamber. The plurality of nozzles is arrayed in a nozzle array direction, to discharge liquid. The plurality of individual liquid chambers is communicated with the plurality of nozzles. The common liquid chamber supplies liquid to the plurality of individual liquid chambers. The deformable damper constitutes part of a wall face of the common liquid chamber. The damper chamber is disposed along the nozzle array direction with the damper interposed between the damper chamber and the common liquid chamber. The damper chamber extends to an outer area in the nozzle array direction than an individual liquid chamber of the plurality of individual liquid chambers at each end in the nozzle array direction.
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公开(公告)号：US20200207084A1
公开(公告)日：2020-07-02
申请号：US16726326
申请日：2019-12-24
Applicant: SEIKO EPSON CORPORATION
Inventor： Yoichi MIYASAKA
Abstract: A filling apparatus that fills a container provided with an interior space, an opening through which the interior space and the outside communicate with each other, and a bottom surface, with a liquid absorber having a water absorbent resin absorbing a liquid, the apparatus includes a stage on which the container is placed, and a vibration applying portion that applies a vibration to the container placed on the stage, in which the vibration is applied as a vibration plane formed in an angle range in which an angle to a horizontal plane is within 0°±30°.
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