公开(公告)号：US20230068149A1

公开(公告)日：2023-03-02

申请号：US17823045

申请日：2022-08-29

Applicant: SEIKO EPSON CORPORATION

Inventor： Haruki KOBAYASHI ,  Atsushi MUTO

IPC: B41J2/14

Abstract: A liquid ejecting apparatus includes a liquid ejecting head that has an ejection surface including a first nozzle row configured to eject a first ink and a second nozzle row configured to eject a second ink. The liquid ejecting head is configured to be held in a first posture in which the ejection surface is inclined with respect to a horizontal plane. The dynamic surface tension of the first ink is higher than the dynamic surface tension of the second ink. In the first posture, the first nozzle row is positioned above the second nozzle row with respect to a gravity direction.

公开(公告)号：US20210060939A1

公开(公告)日：2021-03-04

申请号：US17001968

申请日：2020-08-25

Applicant: SEIKO EPSON CORPORATION

Inventor： Takahiro KANEGAE ,  Nobuaki ITO ,  Atsushi MUTO

IPC: B41J2/145 ,  B41J2/21

Abstract: a part of a first head is positioned in the second part, a part of a second head is positioned in the third part, a part of a third head is positioned in the fifth part, a part of a fourth head is positioned in the sixth part, and a first color is cyan and a third color is magenta.

公开(公告)号：US20170246893A1

公开(公告)日：2017-08-31

申请号：US15434680

申请日：2017-02-16

Applicant: Seiko Epson Corporation

Inventor： Atsushi MUTO ,  Ryosuke TSUCHIHASHI ,  Hiroshige OWAKI ,  Nobuaki AZAMI

IPC: B41J29/377 ,  B41J2/045

CPC classification number: B41J29/377 ,  B41J2/04541 ,  B41J2/04553 ,  B41J2/04581 ,  B41J2/04588 ,  B41J2/14233 ,  B41J29/38 ,  B41J2002/14241 ,  B41J2002/14475 ,  B41J2202/11

Abstract: A liquid discharge device includes a liquid discharge head that includes a nozzle from which liquid is discharged and a liquid channel communicating with the nozzle, and that discharges liquid from the nozzle. The nozzle has an inner wall surface having an uneven pattern including a recess where the inner diameter of the nozzle is increased and a projection where the inner diameter of the nozzle is smaller than that in the recess. In a case where ink is continuously discharged from an identical nozzle, at a time when a meniscus in the nozzle after previous discharge is located closer to an initial position before discharge than a center position between the initial position and a position at which the meniscus is most greatly drawn toward the liquid channel, subsequent discharge is performed.

公开(公告)号：US20170369723A1

公开(公告)日：2017-12-28

申请号：US15607822

申请日：2017-05-30

Applicant: Seiko Epson Corporation

Inventor： Yusuke MIZUTAKI ,  Tomohito NAKANO ,  Wataru ITO ,  Atsushi MUTO ,  Hiroshige OWAKI

IPC: C09D11/322 ,  B41J2/135 ,  B41J2/04 ,  C07D221/18 ,  C09D11/38 ,  C09D11/326

CPC classification number: C09D11/322 ,  B41J2/04 ,  B41J2/135 ,  B41J2202/01 ,  C07D221/18 ,  C09D11/326 ,  C09D11/38

Abstract: A water-based ink includes a pigment, and water, in which a viscosity at 20° C. is in a range of 2 mPa·s to 7 mPa·s, and a yield value at 20° C. is less than 0.2 mPa, and the yield value at 20° C. when evaporating 25% of the water is less than 0.8 mPa.

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

IPC: B41J2/165 ,  B41J2/14 ,  B41J2/025 ,  B41J2/155 ,  B41J2/045

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.