Patent ID: 11951737
Assignee: SEIKO EPSON CORPORATION
Field: Textile and paper machines (Mechanical engineering)
Classification: CPC B | IPC B

Claim 0:
1. A liquid discharge head unit comprising:
a liquid discharge head provided with a pressure chamber substrate having a plurality of pressure chambers, a piezoelectric element laminated on the pressure chamber substrate to apply pressure to each of the plurality of pressure chambers, and a drive wiring for applying a voltage for driving the piezoelectric element to the piezoelectric element; and
a wiring substrate electrically coupled to the liquid discharge head, wherein
the liquid discharge head is provided with a detection resistor formed of the same material as the piezoelectric element or the drive wiring and used to detect a temperature of the pressure chamber,
the wiring substrate is provided with a first circuit, a second circuit different from the first circuit, and a temperature detection circuit electrically coupled to the detection resistor, and
the first circuit, the second circuit, and the temperature detection circuit are provided at the wiring substrate so that
a distance between the first circuit and the second circuit is a first distance,
a distance between the first circuit and the temperature detection circuit is a second distance longer than the first distance, and
a distance between the second circuit and the temperature detection circuit is a third distance longer than the first distance.