US 11,745,504 B2
Liquid discharging apparatus and integrated circuit device
Kazuhito Fujisawa, Minowa (JP); and Tomoko Hara, Chino (JP)
Assigned to SEIKO EPSON CORPORATION
Filed by Seiko Epson Corporation, Tokyo (JP)
Filed on Sep. 28, 2021, as Appl. No. 17/487,029.
Claims priority of application No. 2020-166261 (JP), filed on Sep. 30, 2020.
Prior Publication US 2022/0097368 A1, Mar. 31, 2022
Int. Cl. B41J 29/38 (2006.01); B41J 2/045 (2006.01)
CPC B41J 2/04581 (2013.01) [B41J 2/04541 (2013.01); B41J 2/04551 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A liquid discharging apparatus comprising:
a driving signal output circuit that outputs a driving signal;
a discharge control signal output circuit that outputs a discharge control signal including first data, second data, third data, and fourth data; and
a liquid discharge head that discharges a liquid in response to the driving signal and the discharge control signal; wherein
the liquid discharge head has
a first driving element, a second driving element, a third driving element, and a fourth driving element that are driven by the driving signal, and
an integrated circuit that controls supply of the driving signal to the first driving element, to the second driving element, to the third driving element, and to the fourth driving element according to the discharge control signal,
the integrated circuit has
a first switch circuit that receives the driving signal and switches between output and non-output of the driving signal to the first driving element,
a second switch circuit that receives the driving signal and switches between output and non-output of the driving signal to the second driving element,
a third switch circuit that receives the driving signal and switches between output and non-output of the driving signal to the third driving element,
a fourth switch circuit that receives the driving signal and switches between output and non-output of the driving signal to the fourth driving element, and
a switch control circuit that receives the discharge control signal and controls whether to cause each of the first switch circuit, the second switch circuit, the third switch circuit, and the fourth switch circuit to output the driving signal,
the switch control circuit has
a fifth switch circuit that receives the first data and the second data,
a sixth switch circuit that receives the first data and the third data, and
a seventh switch circuit that receives the first data and the fourth data,
the fifth switch circuit switches between output of the first data to the second switch circuit and output of the second data to the second switch circuit,
the sixth switch circuit switches between output of the first data to the third switch circuit and output of the third data to the third switch circuit, and
the seventh switch circuit switches between output of the first data to the fourth switch circuit and output of the fourth data to the fourth switch circuit.