公开(公告)号：US20230286264A1

公开(公告)日：2023-09-14

申请号：US18179641

申请日：2023-03-07

Applicant: SEIKO EPSON CORPORATION

Inventor： Masanori MIKOSHIBA ,  Motoki TAKABE ,  Takanori AIMONO ,  Yuki ISHII

IPC: B41J2/045 ,  B41J2/14

CPC classification number: B41J2/04541 ,  B41J2/04581 ,  B41J2/14233

Abstract: A liquid discharge head including a diaphragm, a pressure chamber substrate that is laminated on the diaphragm, and a piezoelectric element that includes a first active portion and a second active portion, and is laminated on the diaphragm, in which when a direction in which the first active portion and the second active portion are arranged is defined as a second direction when viewed in a lamination direction, and a direction orthogonal to the lamination direction and the second direction is defined as a third direction, and the piezoelectric element includes a first region which is a region in which both the first active portion and the second active portion are provided, and a second region which is a region in which one of the first active portion and the second active portion is provided and the other is not provided.

公开(公告)号：US20230139508A1

公开(公告)日：2023-05-04

申请号：US18049677

申请日：2022-10-26

Applicant: SEIKO EPSON CORPORATION

Inventor： Yoshinori NAKAJIMA ,  Yuki ISHII

IPC: B05B13/04 ,  B05C5/02 ,  B05B7/08

Abstract: A printing apparatus includes a head and a robot which moves the head with respect to a workpiece, the head includes a first nozzle row for ejecting a first and a second nozzle row for ejecting a second ink which has lower brightness than the first ink, the robot includes an arm portion having a distal end, a proximal end, and a plurality of joints, and a base portion coupled to the proximal end, and supports the head by the distal end, and when a timing at which the first ink is ejected to a predetermined position on the workpiece is defined as a first timing, and a timing at which the second ink is ejected to the predetermined position is defined as a second timing, a distance between the distal end and the proximal end at the second timing is less than the first timing.

公开(公告)号：US20220118680A1

公开(公告)日：2022-04-21

申请号：US17503496

申请日：2021-10-18

Applicant: Seiko Epson Corporation

Inventor： Masaru KUMAGAI ,  Yuki ISHII

IPC: B29C64/106 ,  B33Y10/00 ,  B33Y30/00 ,  B29C64/227

Abstract: A three-dimensional object print apparatus performs a first step at which a liquid ejecting head ejects liquid onto a workpiece and simultaneously a moving mechanism changes a location of the liquid ejecting head relative to the workpiece along a first route and further performs a second step at which an energy emitting section irradiates the liquid on the workpiece with energy and simultaneously the moving mechanism changes the location of the liquid ejecting head relative to the workpiece along a second route. In this case, L1 L2 at the second step, where L1 denotes a distance in a direction normal to a nozzle surface of the liquid ejecting head between the workpiece and the nozzle surface, and L2 denotes a distance in a direction normal to an emission surface of the energy emitting section between the workpiece and the emission surface.

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：US20220288846A1

公开(公告)日：2022-09-15

申请号：US17689107

申请日：2022-03-08

Applicant: Seiko Epson Corporation

Inventor： Shinichi NAKAMURA ,  Yuta ABE ,  Yuichiro MATSUURA ,  Yuki ISHII

IPC: B29C64/209 ,  B29C64/106 ,  B33Y10/00 ,  B33Y30/00

Abstract: A three-dimensional object printing apparatus includes: a head having a nozzle surface; a robot that has a base portion that supports the head, and changes a position of the head with respect to the base portion; and a cap portion having a fixed position to the base portion to cover the nozzle surface, in which the three-dimensional object printing apparatus is configured to execute: a capping operation of causing the robot to locate the head at a position at which the nozzle surface is covered with the cap portion, and a printing operation of causing the head to eject the liquid to a work with respect to the work, and a yaw angle of the head during the execution of the capping operation and a yaw angle of the head during the execution of the printing operation are different from each other.

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：US20230137739A1

公开(公告)日：2023-05-04

申请号：US18049317

申请日：2022-10-25

Applicant: SEIKO EPSON CORPORATION

Inventor： Yoshinori NAKAJIMA ,  Yuki ISHII

IPC: B41J2/21

Abstract: A printing apparatus includes a head and a robot which changes a position of the head with respect to a workpiece, the head includes a first nozzle row for ejecting a first ink and a second nozzle row for ejecting a second ink which has lower brightness than the first ink, , the robot includes an arm portion having a distal end, a proximal end, and a base portion coupled to the proximal end, and supports the head by the distal end, and a first joint which is a joint closest to the distal end and rotate around a first rotating axis, and a distance between the second nozzle row and the first rotating axis is less than a distance between the first nozzle row and the first rotating axis when viewed in a direction along the first rotating axis.

公开(公告)号：US20240269933A1

公开(公告)日：2024-08-15

申请号：US18439909

申请日：2024-02-13

Applicant: SEIKO EPSON CORPORATION

Inventor： Masaru KUMAGAI ,  Kohei UTSUNOMIYA ,  Yuki ISHII

IPC: B29C64/393 ,  B29C64/112 ,  B29C64/209 ,  B29C64/232 ,  B29C64/236 ,  B33Y10/00 ,  B33Y30/00

CPC classification number: B29C64/393 ,  B29C64/112 ,  B29C64/209 ,  B29C64/232 ,  B29C64/236 ,  B33Y10/00 ,  B33Y30/00

Abstract: A three-dimensional object printing apparatus includes a head that ejects a liquid to a printing region on a workpiece, and a movement mechanism that changes a relative position and posture between the workpiece and the head, and executes a first printing operation and a second printing operation. The printing region includes a first band region into which the liquid is ejected in the first printing operation and a second band region into which the liquid is ejected in the second printing operation. When a width of the first band region at a first position is set as a first width and a width of the first band region at a second position is set as a second width, the first width is less than the second width, and a part of the printing region overlaps with a part of the second band region at the first position.

公开(公告)号：US20230133122A1

公开(公告)日：2023-05-04

申请号：US18049678

申请日：2022-10-26

Applicant: SEIKO EPSON CORPORATION

Inventor： Yoshinori NAKAJIMA ,  Yuki ISHII ,  Nobuaki ITO

IPC: B41J2/045 ,  B41J2/21

Abstract: A printing apparatus includes a head and a robot, the head includes a first nozzle row in which a plurality of nozzles for ejecting a first ink are arranged and a second nozzle row in which a plurality of nozzles for ejecting a second ink are arranged, the robot includes an arm portion having a distal end, a proximal end, and a plurality of joints, and a base portion coupled to the proximal end, supports the head by the distal end, and changes a position and a posture of the head with respect to a workpiece, a brightness of the second ink is lower than a brightness of the first ink, and a distance between the second nozzle row and the proximal end is less than a distance between the first nozzle row and the proximal end.