公开(公告)号：US20210170765A1

公开(公告)日：2021-06-10

申请号：US17113579

申请日：2020-12-07

Applicant: SEIKO EPSON CORPORATION

Inventor： Yuki SHIOHARA

IPC: B41J11/00 ,  B41J2/14 ,  F26B21/14 ,  G21K5/10 ,  B05D3/06

Abstract: A liquid ejecting apparatus includes a print head that serves as a liquid ejecting unit configured to eject a liquid curable by light irradiation onto a medium and an irradiation unit configured to emit light onto the medium M on which the liquid is ejected. The liquid ejecting apparatus also includes a depressurizing mechanism that serves as an oxygen concentration reduction mechanism configured to lower an oxygen concentration to a level below an oxygen concentration of the atmosphere in an ejection region formed between the print head and the medium when the print head ejects the liquid and also in an irradiation region formed between the irradiation unit and the medium when the irradiation unit emits light.

公开(公告)号：US20220242136A1

公开(公告)日：2022-08-04

申请号：US17649011

申请日：2022-01-26

Applicant: Seiko Epson Corporation

Inventor： Toshio NAKATA ,  Yuichi URABE ,  Kazushi ARAFUKA ,  Yuki SHIOHARA ,  Munechika OTSURU

IPC: B41J2/18 ,  B41J2/175

Abstract: A liquid circulation mechanism includes a supply flow path making a liquid supply source and a liquid discharging head communicate with each other and a collection flow path making the liquid discharging head and a connection portion of the supply flow path communicate with each other, in which a branch portion, a plurality of flow paths branched at the branch portion, and a merging portion, in which the plurality of flow paths are merged, are provided in at least one of the supply flow path and the collection flow path. Pressure adjustment portions, which are provided in the plurality of flow paths and open the flow paths when a pressure on the liquid discharging head side is equal to a predetermined pressure, have different the predetermined pressures for opening the flow paths in the plurality of flow paths.

公开(公告)号：US20200282737A1

公开(公告)日：2020-09-10

申请号：US16807934

申请日：2020-03-03

Applicant: SEIKO EPSON CORPORATION

Inventor： Toshio KUMAGAI ,  Yuki SHIOHARA ,  Hitotoshi KIMURA

IPC: B41J2/175 ,  B41J2/135 ,  B41J2/045

Abstract: A damper unit includes a damper chamber which has a wall partially composed of a flexible membrane with a rubber elasticity and which is configured to store a liquid; a gas chamber partitioned from the damper chamber by the flexible membrane; a communication portion provided for the gas chamber so that the gas chamber is in communication with an outside of the damper unit; and a one-way valve provided in the communication portion to allow a gas to flow into the gas chamber from the outside of the damper unit and to restrict a gas to flow from the gas chamber to an outside thereof.

公开(公告)号：US20240351334A1

公开(公告)日：2024-10-24

申请号：US18636412

申请日：2024-04-16

Applicant: SEIKO EPSON CORPORATION

Inventor： Yuki SHIOHARA

IPC: B41J2/14

CPC classification number: B41J2/1433 ,  B41J2202/16

Abstract: A liquid ejection apparatus includes: a head configured to eject a liquid; a heat source; and a transfer member configured to transfer heat generated by the heat source to the head. The head includes a nozzle plate having a nozzle surface where a nozzle configured to eject a liquid opens, and a main body portion to which the nozzle plate is attached and which includes a supply flow path in communication with the nozzle. The transfer member surrounds the nozzle plate.

公开(公告)号：US20200262211A1

公开(公告)日：2020-08-20

申请号：US16791202

申请日：2020-02-14

Applicant: SEIKO EPSON CORPORATION

Inventor： Yuki SHIOHARA ,  Toshio KUMAGAI ,  Satoru KOBAYASHI ,  Seiko HAMAMOTO

IPC: B41J2/175

Abstract: A liquid ejecting apparatus includes: a liquid supply path coupled to a liquid ejection portion to supply a liquid thereto; a liquid discharge path coupled to the liquid ejection portion to discharge the liquid to be supplied thereto; an upstream damper portion which is provided as a part of the liquid supply path and which includes an upstream damper chamber having a wall partially composed of a flexible membrane with a rubber elasticity; and a downstream damper portion which is provided as at least one of a part of the liquid supply path between the upstream damper portion and the liquid ejection portion and a part of the liquid discharge path and which has a flexible wall composed of a resin film.