US 12,409,652 B2
Liquid discharge apparatus
Masahiko Tsuyuki, Chino (JP); and Makoto Takamuku, Matsumoto (JP)
Assigned to SEIKO EPSON CORPORATION, (JP)
Filed by SEIKO EPSON CORPORATION, Tokyo (JP)
Filed on Sep. 29, 2023, as Appl. No. 18/478,104.
Claims priority of application No. 2022-158885 (JP), filed on Sep. 30, 2022.
Prior Publication US 2024/0109312 A1, Apr. 4, 2024
Int. Cl. B41J 2/14 (2006.01); B41J 2/045 (2006.01)
CPC B41J 2/14233 (2013.01) [B41J 2/14201 (2013.01); B41J 2/04541 (2013.01); B41J 2/14072 (2013.01); B41J 2002/14491 (2013.01); B41J 2202/18 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A liquid discharge apparatus comprising:
a print head that discharges a liquid; and
a substrate unit electrically coupled to the print head, wherein
the print head includes
a discharge section that has a piezoelectric element that is displaced by receiving a driving signal and discharges a liquid by displacement of the piezoelectric element,
a logic circuit that switches whether or not to supply the driving signal to the piezoelectric element, and
a first connector electrically coupled to the substrate unit,
the substrate unit includes
a second connector that is electrically coupled to the print head by being fitted to the first connector, and
a wiring substrate provided with a plurality of circuit components having the second connector,
the wiring substrate is a rigid flexible substrate including a plurality of rigid members provided with the plurality of circuit components and a flexible member more flexible than the plurality of rigid members,
the flexible member includes a first surface, a second surface opposite to the first surface, a first region, a second region, and a third region,
the third region is positioned between the first region and the second region,
the plurality of rigid members include a first rigid member and a second rigid member,
the first rigid member includes a first front surface, and is laminated on the first surface of the first region such that the first front surface extends along the first surface,
the second rigid member includes a second front surface, and is laminated on the first surface of the second region such that the second front surface extends along the first surface,
the flexible member includes a power supply voltage wiring through which a power supply voltage signal supplied to the logic circuit and the plurality of circuit components propagates, and
the power supply voltage wiring is continuously provided over the first region, the second region, and the third region of the flexible member.