公开(公告)号：US20240269992A1

公开(公告)日：2024-08-15

申请号：US18439878

申请日：2024-02-13

Applicant: SEIKO EPSON CORPORATION

Inventor： Yoshinori NAKAJIMA ,  Kohei UTSUNOMIYA ,  Masaru KUMAGAI ,  Yuki ISHII

IPC: B41J3/407 ,  B25J11/00 ,  B41J25/00 ,  B41J25/316

CPC classification number: B41J3/40731 ,  B25J11/0075 ,  B41J25/001 ,  B41J25/316

Abstract: A three-dimensional object printing apparatus executes a first printing operation in which a liquid is ejected into a first band region and a second printing operation in which the liquid is ejected into a second band region. When an angle formed by a vector at a first position in a first path and a vector at a second position in a second path is set as a first angle and an angle formed by a vector at a third position in the first path and a vector at a fourth position in the second path is set as a second angle, the first angle is more than the second angle, and a width in which the first band region overlaps with the second band region at the first position is less than a width in which the first band region overlaps with the second band region at the third position.

公开(公告)号：US20230249454A1

公开(公告)日：2023-08-10

申请号：US18165823

申请日：2023-02-07

Applicant: SEIKO EPSON CORPORATION

Inventor： Masaru KUMAGAI ,  Yuki ISHII

IPC: B41J2/045

CPC classification number: B41J2/04573 ,  B41J2/04581 ,  B25J9/126

Abstract: A printing device includes a head that ejects liquid to a work; a robot that changes relative positions of the work and the head; a positional information output unit that outputs positional information regarding a position of the robot; and a timing adjuster that adjusts, based on the positional information, an ejection timing of ejecting the liquid from the head. When a timing of acquiring first positional information as the positional information by the timing adjuster is a first acquisition timing, a timing of acquiring second positional information as the positional information by the timing adjuster after the first acquisition timing is a second acquisition timing, and the ejection timing after the second acquisition timing is a first ejection timing, the timing adjuster adjusts the first ejection timing based on the first positional information and the second positional information.

公开(公告)号：US20170008293A1

公开(公告)日：2017-01-12

申请号：US15177604

申请日：2016-06-09

Applicant: SEIKO EPSON CORPORATION

Inventor： Masaru KUMAGAI ,  Hirokazu ONO

IPC: B41J2/175

CPC classification number: B41J2/175 ,  B41J2/17503 ,  B41J2/17566 ,  B41J29/38

Abstract: A liquid ejecting apparatus includes an ejecting head through which liquid is ejected. A supply passage connects the ejecting head to a plurality of liquid storage bodies that include a first liquid storage body to be used first and a second liquid storage body to be used following the use of the first liquid storage body. A supply mechanism discharges the liquid contained in the liquid storage bodies to the supply passage. When the supply mechanism discharges the liquid contained in the first liquid storage body to the supply passage on the basis of first energy, if the amount of liquid left in the first liquid storage body is smaller than a threshold amount, the supply mechanism discharges the liquid contained in the second liquid storage body to the supply passage on the basis of second energy, which is lower than the first energy.

Abstract translation: 液体喷射装置包括喷射头，通过该喷射头喷射液体。 供给通道将喷射头连接到多个液体存储体，所述多个液体存储体包括首先要使用的第一储液体和在使用第一液体存储体之后使用的第二液体存储体。 供给机构将容纳在液体容纳体中的液体排出到供给通路。 当供给机构基于第一能量将包含在第一液体容纳体中的液体排出到供给通道时，如果残留在第一液体容纳体中的液体量小于阈值量，则供给机构将液体排出 基于比第一能量低的第二能量将第二液体存储体容纳在供给通道中。

公开(公告)号：US20240286350A1

公开(公告)日：2024-08-29

申请号：US18584437

申请日：2024-02-22

Applicant: SEIKO EPSON CORPORATION

Inventor： Masaru KUMAGAI

IPC: B29C64/209 ,  B25J11/00 ,  B29C64/227 ,  B29C64/393 ,  B33Y30/00 ,  B41J3/407

CPC classification number: B29C64/209 ,  B25J11/00 ,  B29C64/227 ,  B29C64/393 ,  B41J3/4073 ,  B33Y30/00

Abstract: A printing apparatus includes a head that ejects liquid, a robot that includes a base portion and a distal end portion supporting the head and changes a relative position of the head with respect to the base portion, and a moving mechanism that moves a work relative to the base portion. A first printing operation in which the head ejects the liquid onto a first region in a printing region and a second printing operation in which the head ejects the liquid onto a second region in the printing region are performed. A main scan movement operation in which the moving mechanism moves the work relative to the base portion in the main scan direction is performed. The first region is adjacent to the second region in the main scan direction. The printing region includes a first overlapping region in which the first region overlaps the second region.

公开(公告)号：US20240246336A1

公开(公告)日：2024-07-25

申请号：US18413124

申请日：2024-01-16

Applicant: SEIKO EPSON CORPORATION

Inventor： Masamichi SUZUKI ,  Kohei UTSUNOMIYA ,  Yoshinori NAKAJIMA ,  Masaru KUMAGAI ,  Yuki ISHII

IPC: B41J2/14 ,  B41J2/045

CPC classification number: B41J2/14 ,  B41J2/04573

Abstract: A printing apparatus includes: a head including a nozzle surface; and a robot changes a relative position of the head with respect to a workpiece, in which a first printing operation of performing printing on the workpiece is executed by causing the head to eject the liquid, and when a timing at which the first printing operation is started is set as a first timing, a timing at which the first printing operation ends is set as a second timing, a timing between the first timing and the second timing is set as a third timing, and a distance between the plurality of nozzles and the workpiece along a normal direction of the nozzle surface is set as an ejection distance, the ejection distance at one or both of the first timing and the second timing is more than the ejection distance at the third timing.

公开(公告)号：US20230088150A1

公开(公告)日：2023-03-23

申请号：US17949330

申请日：2022-09-21

Applicant: SEIKO EPSON CORPORATION

Inventor： Keigo SUGAI ,  Masaru KUMAGAI

IPC: B41J3/407 ,  B41J3/54 ,  B41M5/00

Abstract: A three-dimensional printing device includes a first head having a first nozzle array that ejects liquid, a second head having a second nozzle array that ejects liquid, and a moving mechanism having a linear motion mechanism that changes relative positions of the heads with respect to a three-dimensional workpiece. The first region of the workpiece is more inclined with respect to the first axis than the second region of the workpiece. A time period when the first nozzle array faces the first region and the second nozzle array faces the second region is a first time period. In the first time period, the first nozzle array ejects the liquid onto the first region in a first ejection cycle. In the first time period, the second nozzle array ejects the liquid onto the second region in a second ejection cycle. The first ejection cycle is shorter than the second ejection cycle.

公开(公告)号：US20190283441A1

公开(公告)日：2019-09-19

申请号：US16352648

申请日：2019-03-13

Applicant: SEIKO EPSON CORPORATION

Inventor： Eiichiro WATANABE ,  Masaru KUMAGAI ,  Yukihiro HANAOKA ,  Izumi NOZAWA

IPC: B41J2/175

Abstract: A liquid ejecting apparatus includes a liquid ejecting head that ejects liquid through a nozzle, a supply flow path that supplies liquid from a liquid container containing liquid to the liquid ejecting head, a liquid chamber provided in a buffer chamber disposed in the supply flow path, the liquid chamber being configured to change in volume, a liquid feeding unit of a reversible type disposed in the supply flow path between the liquid container and the liquid chamber, a control portion that controls driving of the liquid feeding unit, and a suction unit that suctions liquid through the nozzle. The control portion controls the liquid feeding unit to perform reverse feeding of the liquid from the liquid chamber to the liquid container before the suction unit suctions the liquid through the nozzle.

公开(公告)号：US20160152030A1

公开(公告)日：2016-06-02

申请号：US14944511

申请日：2015-11-18

Applicant: SEIKO EPSON CORPORATION

Inventor： Masahisa NAWANO ,  Masaru KOBASHI ,  Masaru KUMAGAI

IPC: B41J2/165

CPC classification number: B41J2/16526 ,  B41J2/16505 ,  B41J2/16508 ,  B41J2/1652 ,  B41J2/16523 ,  B41J2/16535 ,  B41J2/16538 ,  B41J2/175 ,  B41J2/17596 ,  B41J29/38 ,  B41J2002/1657

Abstract: A liquid ejecting apparatus performs a wiping process for wiping a nozzle forming face while a leaking process for leaking liquid from a plurality of nozzle groups is performed by setting a pressure difference to a second pressure difference which is smaller than a first pressure difference, after performing a discharging process for discharging liquid from a part of nozzle groups among the plurality of nozzle groups by setting the pressure difference to the first pressure difference, when a difference which is obtained by subtracting an external pressure which is a pressure in a space to which a nozzle is open from an internal pressure which is a pressure of liquid in the nozzle included in the plurality of nozzle groups which eject liquid is set to the pressure difference.

Abstract translation: 液体喷射装置执行擦拭喷嘴形成面的擦拭处理，同时通过将压差设定为小于第一压力差的第二压力差来执行从多个喷嘴组泄漏液体的泄漏处理，在执行 通过将压力差设定为第一压力差来将多个喷嘴组中的一部分喷嘴组中的液体排出的排出处理，当通过减去作为空气中的压力的​​外部压力而得到的差 喷嘴从内部压力打开，内部压力是包括在多个喷嘴组中的喷嘴中的液体的压力，喷射液体被设定为压力差。

公开(公告)号：US20220266529A1

公开(公告)日：2022-08-25

申请号：US17676286

申请日：2022-02-21

Applicant: Seiko Epson Corporation

Inventor： Tomonaga HASEGAWA ,  Yuichiro MATSUURA ,  Masaru KUMAGAI ,  Shinichi NAKAMURA ,  Yuki ISHII

IPC: B29C64/393 ,  B29C64/379 ,  B29C64/321 ,  B29C64/209 ,  B29C64/135 ,  B29C64/112 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02 ,  B25J11/00 ,  G06V10/141 ,  G06V10/56

Abstract: There is provided a three-dimensional object printing apparatus including an imaging device fixed to a base and imaging an object located inside an imaging range, a first robot supporting a head having a nozzle for discharging a liquid and changing a position and a posture of the head, and a second robot supporting a three-dimensional workpiece and changes a position and a posture of the workpiece. The three-dimensional object printing apparatus performs a material feeding step of causing the second robot to move the workpiece from an outside to an inside of the imaging range, and a printing step of causing the head to discharge the liquid to the workpiece while at least one of the first robot and the second robot relatively moves the head and the workpiece inside the imaging range.

公开(公告)号：US20220193997A1

公开(公告)日：2022-06-23

申请号：US17558654

申请日：2021-12-22

Applicant: Seiko Epson Corporation

Inventor： Shinichi NAKAMURA ,  Masaru KUMAGAI ,  Keigo SUGAI ,  Tomonaga HASEGAWA ,  Koki HIRATA

IPC: B29C64/241 ,  B33Y10/00 ,  B33Y30/00 ,  B29C64/112 ,  B29C64/386 ,  B33Y50/00 ,  B29C64/209

Abstract: A three-dimensional object printing apparatus includes a head unit and a robot. The head unit includes a head and an energy emission unit. The head has an ejecting surface on which a nozzle is provided. The head is configured to eject ink from the nozzle toward a three-dimensional workpiece. The energy emission unit has an emitting surface from which energy for curing the ink is emitted. The robot changes relative position and relative orientation of the workpiece and the head unit. When a direction in which the head ejects the ink is defined as an ejecting direction, the ejecting surface is located closer to an ejecting direction side, which is a side toward which the ejecting direction goes, than the emitting surface is.