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公开(公告)号：US20240042772A1
公开(公告)日：2024-02-08
申请号：US18364683
申请日：2023-08-03
Applicant: SEIKO EPSON CORPORATION
Inventor： Hiroyuki HAGIWARA , Shun KATSUIE , Hidenori SOKABE
CPC classification number: B41J2/18 , B41J2/17563
Abstract: A liquid ejecting apparatus includes a filter that partitions a common liquid chamber communicating with a nozzles into an upstream chamber and a downstream chamber, an inlet, an outlet, a liquid storage section, a supply flow path, and a recovery flow path. A beam portion is provided inside the downstream chamber. A pressurization discharge operation for discharging the liquid from the nozzles and a circulation operation for circulating the liquid in a circulation path are performed. In the filling process of filling the circulation path with the liquid, after the first circulation operation is performed, a predetermined operation for moving the liquid inside the downstream chamber in a direction different from a direction in which the liquid inside the downstream chamber is moved by the circulation operation is performed, and thereafter, the pressurization discharge operation is performed.
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公开(公告)号：US20230405992A1
公开(公告)日：2023-12-21
申请号：US18336242
申请日：2023-06-16
Applicant: SEIKO EPSON CORPORATION
Inventor： Hiroyuki HAGIWARA
CPC classification number: B41J2/14233 , B41J2/155 , B41J2/1433
Abstract: There are provided a first head chip including a first nozzle plate and having a first direction as a longitudinal direction; a second head chip including a second nozzle plate and having the first direction as a longitudinal direction; a fixing plate which has a first opening portion and a second opening portion, and to which the first head chip and the second head chip are fixed; and a protection section protruding in an ejection direction from a surface of the fixing plate, and the protection section is arranged between the first head chip and the second head chip in a second direction orthogonal to both the ejection direction and the first direction.
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公开(公告)号：US20230134134A1
公开(公告)日：2023-05-04
申请号：US17979799
申请日：2022-11-03
Applicant: SEIKO EPSON CORPORATION
Inventor： Yoshiki SUGAWARA , Keita MORIYAMA , Hiroyuki HAGIWARA
IPC: B41J2/14
Abstract: A first-adhesive surface is provided on an upper portion of a head chip, a holder accommodates the head chip between the holder and a fixing plate and has a second-adhesive surface formed with an opening of a second-supply flow passage communicating with the head chip, the first-adhesive surface and the second-adhesive surface adhere to each other with a first-adhesive so as to define a coupling flow passage coupling between a first-supply flow passage and the second-supply flow passage, the upper portion of the head chip has a first-contact portion, the holder has a first-contacted portion facing the first-contact portion, and a first-dimension between the first-contact portion and the first-contacted portion is smaller than a second-dimension between the first-adhesive surface and the second-adhesive surface.
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公开(公告)号：US20220184972A1
公开(公告)日：2022-06-16
申请号：US17643862
申请日：2021-12-13
Applicant: Seiko Epson Corporation
Inventor： Takahiro KANEGAE , Nobuaki ITO , Hiroyuki HAGIWARA
Abstract: a≥b≥0, p≥1, q≥1, where a is a number of pairs each consisting of two adjacent first head units, b is a number of pairs each consisting of two adjacent second head units, p is a number of first head units, and q is a number of second head units.
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公开(公告)号：US20180244047A1
公开(公告)日：2018-08-30
申请号：US15905468
申请日：2018-02-26
Applicant: SEIKO EPSON CORPORATION
Inventor： Atsushi MUTO , Masahiko SATO , Hiroyuki HAGIWARA
Abstract: A liquid ejecting apparatus includes a flow path member including a common liquid chamber communicating with each of a plurality of nozzles formed in a nozzle surface, via a corresponding pressure generating chamber, a supply port provided in an inner wall of the common liquid chamber to supply a liquid to the common liquid chamber, a discharge port provided in a ceiling of the common liquid chamber to discharge an air bubble from the common liquid chamber, and a wall continuously extending from the inner wall, and including a surface opposing the discharge port.
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Patent Agency Ranking
公开(公告)号：US20150165767A1
公开(公告)日：2015-06-18
申请号：US14566606
申请日：2014-12-10
Applicant: Seiko Epson Corporation
Inventor： Hiroshige OWAKI , Hiroyuki HAGIWARA
IPC: B41J2/14
CPC classification number: B41J2/1433 , B41J2/14233 , B41J2/19 , B41J2002/14419 , B41J2002/14491 , B41J2202/12
Abstract: A liquid ejecting head includes: a pressure generation chamber that communicates with a nozzle opening; a pressure generation unit that generates a change in a pressure in the pressure generation chamber; a manifold that communicates with a plurality of pressure generation chambers; and a rib that is provided inside the manifold, in which the rib is formed over the manifold in a direction intersecting a liquid flowing inside the manifold, and in which a notch section that divides the flow inside the manifold into two is provided in the rib.
Abstract translation: 液体喷射头包括：与喷嘴开口连通的压力产生室; 产生压力产生室中的压力变化的压力产生单元; 与多个压力产生室连通的歧管; 以及肋，其设置在歧管内部，肋在与歧管内流动的液体相交的方向上形成在歧管上，并且其中将歧管内的流分为两部分的切口部设置在肋中 。
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公开(公告)号：US20230173821A1
公开(公告)日：2023-06-08
申请号：US18074866
申请日：2022-12-05
Applicant: SEIKO EPSON CORPORATION
Inventor： Hiroyuki HAGIWARA , Noriaki OKAZAWA
CPC classification number: B41J2/18 , B41J2/17503 , B41J2/04501
Abstract: A liquid ejecting apparatus includes: a liquid ejecting head including an ejecting surface configured to eject a liquid; a tank that reserves the liquid to be supplied to the liquid ejecting head; a circulating mechanism that executes a circulating operation to circulate the liquid between the liquid ejecting head and the tank; and a control unit that controls the circulating mechanism. The control unit executes a recording operation by the liquid ejecting head in a first posture in which the ejecting surface crosses a horizontal plane and executes the circulating operation in a second posture in which an angle made by the ejecting surface and the horizontal plane is smaller than the angle in the first posture.
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公开(公告)号：US20230139118A1
公开(公告)日：2023-05-04
申请号：US17974604
申请日：2022-10-27
Applicant: SEIKO EPSON CORPORATION
Inventor： Yoshiki SUGAWARA , Hiroyuki HAGIWARA , Takahiro KANEGAE
Abstract: A liquid ejecting head includes a liquid ejecting section, a first-valve-unit adjusting a pressure of liquid to be supplied to the liquid ejecting section, and a housing accommodating the liquid ejecting section and the first-valve-unit, in which the first-valve-unit includes a first-flow-path communicating with the liquid ejecting section, a first flexible film that has a first-inner-surface defining a part of the first-flow-path and a first-outer-surface being opposite from the first inner surface, and is configured to displace in a first-direction from the first-outer-surface toward the first-inner-surface and in a second-direction opposite to the first-direction, and a first-valve-body that is moved between an opening position and a closing position, due to displacement of the first flexible film, and the housing has a first-opening-portion facing at least a part of the first-outer-surface.
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公开(公告)号：US20220032640A1
公开(公告)日：2022-02-03
申请号：US17387685
申请日：2021-07-28
Applicant: Seiko Epson Corporation
Inventor： Takahiro KANEGAE , Katsuhiro OKUBO , Hiroyuki HAGIWARA , Nobuaki ITO , Shun KATSUIE
Abstract: There is provided a liquid ejecting head including: first and second nozzle rows extending in a first direction; a first supply flow path; a first filter chamber having a first inlet; and a second filter chamber having a second inlet, in which the first and second nozzle rows are shifted from each other in both the first direction and a second direction orthogonal to the first direction, the first supply flow path has a branch flow path for distributing the liquid between the first filter chamber and the second filter chamber at a branch position, the branch position is disposed between the first filter chamber and the second filter chamber in a plan view, and the first and second inlets are disposed at a part where the first filter chamber and the second filter chamber overlap each other when viewed in the second direction.
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公开(公告)号：US20200282721A1
公开(公告)日：2020-09-10
申请号：US16806405
申请日：2020-03-02
Applicant: SEIKO EPSON CORPORATION
Inventor： Hiroyuki HAGIWARA , Katsuhiro OKUBO
IPC: B41J2/045
Abstract: A liquid ejecting head including: a first liquid ejecting portion configured to eject a liquid; a second liquid ejecting portion configured to eject a liquid; a first supply flow path configured to supply the liquid to the first liquid ejecting portion and the second liquid ejecting portion; and a temperature detection element for measuring a temperature of the liquid. The first supply flow path includes a common portion to which the liquid is supplied; a first branch portion that communicates with the common portion at a communication position, and that supplies the liquid from the common portion to the first liquid ejecting portion; and a second branch portion that communicates with the common portion at the communication position, and that supplies the liquid from the common portion to the second liquid ejecting portion. The temperature detection element is disposed at a vicinity of the communication position.
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