US 12,291,027 B2
Liquid discharging apparatus
Shinichi Yamada, Nagano (JP)
Assigned to Seiko Epson Corporation, Tokyo (JP)
Filed by SEIKO EPSON CORPORATION, Tokyo (JP)
Filed on Mar. 29, 2023, as Appl. No. 18/192,289.
Claims priority of application No. 2022-058554 (JP), filed on Mar. 31, 2022.
Prior Publication US 2023/0311489 A1, Oct. 5, 2023
Int. Cl. B41J 2/045 (2006.01); B41J 2/14 (2006.01)
CPC B41J 2/0455 (2013.01) [B41J 2/04541 (2013.01); B41J 2/04551 (2013.01); B41J 2/04581 (2013.01); B41J 2/14201 (2013.01); B41J 2002/14483 (2013.01); B41J 2002/14491 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A liquid discharging apparatus comprising:
a discharging section including a first piezoelectric element and a second piezoelectric element, the discharging section discharging a liquid when at least one of the first piezoelectric element and the second piezoelectric element is driven;
a driving signal output circuit that outputs a driving signal that drives at least one of the first piezoelectric element and the second piezoelectric element;
a constant-voltage output circuit that outputs a constant-voltage signal, a voltage value of which is constant;
a path switching circuit having a first input portion into which the driving signal is entered, a second input portion into which the constant-voltage signal is entered, a first output portion that outputs the driving signal, a second output portion that outputs the driving signal or the constant-voltage signal, a first switch, one end of which is coupled to the second input portion and another end of which is coupled to the second output portion, and a second switch, one end of which is coupled to the first output portion and another end of which is coupled to the second output portion;
first wiring through which the first output portion and the first piezoelectric element are electrically coupled together;
second wiring through which the second output portion and the second piezoelectric element are electrically coupled together; and
a switch control circuit that controls the first switch and the second switch; wherein
in a first mode in which the driving signal is output from the second output portion, the switch control circuit controls the first switch so as not to create a continuity and controls the second switch so as to create a continuity, and
in a second mode in which the constant-voltage signal is output from the second output portion, the switch control circuit controls the first switch so as to create a continuity and controls the second switch so as not to create a continuity.