US 12,070,941 B2
Liquid discharge device
Yoichiro Kondo, Chino (JP)
Assigned to SEIKO EPSON CORPORATION, (JP)
Filed by SEIKO EPSON CORPORATION, Tokyo (JP)
Filed on Aug. 22, 2022, as Appl. No. 17/892,409.
Claims priority of application No. 2021-135395 (JP), filed on Aug. 23, 2021.
Prior Publication US 2023/0055010 A1, Feb. 23, 2023
Int. Cl. B41J 2/045 (2006.01); B41J 2/14 (2006.01)
CPC B41J 2/04541 (2013.01) [B41J 2/04581 (2013.01); B41J 2/14 (2013.01); B41J 2002/14491 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A liquid discharge device comprising:
a discharge head that discharges liquid in response to a drive of a drive element;
a head drive circuit that outputs a first drive signal driving the drive element so that the liquid is discharged, and a second drive signal driving the drive element so that the liquid is not discharged; and
a coupling member whose one end is electrically coupled to the head drive circuit and the other end is electrically coupled to the discharge head, wherein
the coupling member includes a first wiring that propagates the first drive signal, a second wiring that propagates the second drive signal, a third wiring that propagates a reference voltage signal serving as a reference potential for driving the drive element, and a base material provided with the first wiring, the second wiring, and the third wiring,
the first wiring and the second wiring are provided on a first surface of the base material,
the third wiring is provided on a second surface different from the first surface of the base material,
at least one of the first wiring and the second wiring is located so as to overlap with at least a part of the third wiring in a first direction along a direction from the first surface to the second surface, and
the coupling member includes an insulating layer that insulates the first wiring, the second wiring, and the third wiring.