公开(公告)号：US20220410573A1

公开(公告)日：2022-12-29

申请号：US17808387

申请日：2022-06-23

Applicant: SEIKO EPSON CORPORATION

Inventor： Kazushi ARAFUKA

IPC: B41J2/165

Abstract: A wiping unit includes a wiping member with a long shape configured to wipe a liquid ejecting head configured to discharge liquid, a first roller around which to wind the wiping member, a second roller configured to wind up the wiping member fed out from the first roller, a driving force transmission mechanism configured to transmit a driving force of a driving source to the second roller, a conveyance roller configured to make contact with the wiping member and rotate along with a movement of the wiping member, a first detection unit configured to detect a rotation amount of the first roller, and a second detection unit configured to detect a rotation amount of the conveyance roller.

公开(公告)号：US20210323309A1

公开(公告)日：2021-10-21

申请号：US17233926

申请日：2021-04-19

Applicant: SEIKO EPSON CORPORATION

Inventor： Kazushi ARAFUKA ,  Hitotoshi KIMURA

IPC: B41J2/165

Abstract: A wiping device includes a feeding portion having a feeding shaft, and configured to hold a band-like member, a pressing unit configured to allow a contact portion located in a contact region of the band-like member, to be brought into contact with a liquid ejecting portion, a winding portion having a winding shaft, and configured to be capable of performing a winding operation for winding the band-like member to move the contact portion in a movement direction, a brake mechanism configured to brake rotation of the feeding shaft, and a contact unit configured to contact the band-like member fed from the feeding portion and to apply tension to the band-like member, the contact unit being movable between an operating time position during the winding operation and a stop time position when the winding operation is not performed.

公开(公告)号：US20210245516A1

公开(公告)日：2021-08-12

申请号：US17170142

申请日：2021-02-08

Applicant: SEIKO EPSON CORPORATION

Inventor： Masato MURAYAMA ,  Atsushi YOSHIDA ,  Hiroki MATSUOKA ,  Kazushi ARAFUKA

IPC: B41J2/165

Abstract: A liquid ejecting apparatus including: a liquid ejecting portion configured to eject a liquid from a nozzle disposed in a nozzle surface; a wiping mechanism configured to perform a wiping operation of wiping the nozzle surface by moving a strip-shaped member configured to absorb the liquid relative to the nozzle surface in a state in which the strip-shaped member is in contact with the nozzle surface; and a control portion configured to perform a pre-wiping operation of moving the strip-shaped member relative to the nozzle surface at a speed higher than a speed for the relative movement during the wiping operation in a state in which the strip-shaped member is not in contact with the nozzle surface and is configured to be brought into contact with the liquid adhering to the nozzle surface, prior to the wiping operation of wiping the nozzle surface with the strip-shaped member.

公开(公告)号：US20170297337A1

公开(公告)日：2017-10-19

申请号：US15486028

申请日：2017-04-12

Applicant: SEIKO EPSON CORPORATION

Inventor： Kazushi ARAFUKA

IPC: B41J2/165

CPC classification number: B41J2/16505 ,  B41J2/16508 ,  B41J2/16511 ,  B65H2403/421 ,  B65H2403/512 ,  F16H3/26 ,  F16H3/34 ,  F16H3/36 ,  F16H27/08 ,  F16H27/10 ,  F16H29/00

Abstract: Provided is a cap unit that can prevent or suppress collision between the drive gear and intermittent gear when the drive gear and intermittent gear begin to mesh. A cap unit 25 has a moving mechanism 28 that moves a cap 26. The moving mechanism 28 has an intermittent cam gear 36 with a cam channel 43; a drive gear 35; and a cap holder 45. The cap holder 45 includes a holding member 48 that holds the cap 26; a cam follower pin 49; a pin support mechanism 50 that supports the cam follower pin 49; and a coil spring 51 that urges the cam follower pin 49 toward the bottom 43a of the cam channel 43. A slope 57 is disposed to the bottom 43a of the cam channel 43. The cam follower pin 49 is on the slope 57 when meshing of the intermittent cam gear 36 and drive gear 35 is disengaged, and the intermittent cam gear 36 turns in conjunction with the cam follower pin 49 moving on the slope 57 due to the urging force of the coil spring 51.

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：US20180111375A1

公开(公告)日：2018-04-26

申请号：US15787086

申请日：2017-10-18

Applicant: SEIKO EPSON CORPORATION

Inventor： Yuichi URABE ,  Kazushi ARAFUKA ,  Ken INOUE

IPC: B41J2/165

CPC classification number: B41J2/16538 ,  B41J2/16541 ,  B41J2/16544

Abstract: There is provided a printing apparatus which performs printing by ejecting ink from a nozzle, including: a wiper blade that abuts on a nozzle surface on which an opening of the nozzle is formed, and moves in a first direction to wipe the ink adhering to the nozzle surface; and a cleaner that abuts on the moving wiper blade and scrapes off the ink adhering to the wiper blade, in which the wiper blade includes a blade member which protrudes in a second direction which is substantially orthogonal to the first direction, and in which the cleaner includes a scraping member which protrudes in a third direction which is a direction opposite to the second direction.

公开(公告)号：US20220242128A1

公开(公告)日：2022-08-04

申请号：US17649834

申请日：2022-02-03

Applicant: Seiko Epson Corporation

Inventor： Hisashi SATO ,  Kazushi ARAFUKA ,  Yuichi URABE

IPC: B41J2/165 ,  B41J11/00

Abstract: A liquid ejecting apparatus includes: a head that ejects a liquid; a curing portion that cures the liquid by emitting energy to the liquid; and a waste-liquid collecting portion that collects the liquid as waste liquid, in which the waste-liquid collecting portion includes an absorber that absorbs the liquid from the head, a first rotational shaft that holds an unused portion of the absorber, and a second rotational shaft that holds a used portion of the absorber, and the curing portion emits the energy to the liquid absorbed by the absorber.

公开(公告)号：US20210138789A1

公开(公告)日：2021-05-13

申请号：US17095054

申请日：2020-11-11

Applicant: SEIKO EPSON CORPORATION

Inventor： Kazushi ARAFUKA ,  Masanobu YAMAGUCHI

IPC: B41J2/165

Abstract: A liquid ejecting apparatus includes a liquid ejecting portion configured to eject a liquid from a nozzle disposed on a nozzle surface, a liquid receiving portion that receives the liquid discharged from the nozzle, a wiping mechanism that includes a wiping portion configured to wipe the nozzle surface, a liquid-ejecting-portion moving mechanism configured to move the liquid ejecting portion, and a control portion that performs an acceleration operation of moving the liquid ejecting portion after a discharge operation of discharging the liquid from the nozzle to the liquid receiving portion and before a wiping operation of wiping the nozzle surface by the wiping portion.