US 12,005,718 B2
Printing apparatus
Yoshinori Nakajima, Matsumoto (JP); and Yuki Ishii, Shiojiri (JP)
Assigned to Seiko Epson Corporation, Tokyo (JP)
Filed by SEIKO EPSON CORPORATION, Tokyo (JP)
Filed on Oct. 25, 2022, as Appl. No. 18/049,317.
Claims priority of application No. 2021-176207 (JP), filed on Oct. 28, 2021.
Prior Publication US 2023/0137739 A1, May 4, 2023
Int. Cl. B41J 2/21 (2006.01)
CPC B41J 2/2103 (2013.01) 13 Claims
OG exemplary drawing
 
1. A printing apparatus comprising:
a head including 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; and
a robot which 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, wherein
a brightness of the second ink is lower than a brightness of the first ink,
the plurality of joints have a first joint which is a joint closest to the distal end among the plurality of joints,
the first joint is a rotating mechanism 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.