US 12,103,305 B2
Liquid discharge device and head drive circuit
Yoichiro Kondo, Chino (JP)
Assigned to SEIKO EPSON CORPORATION, (JP)
Filed by SEIKO EPSON CORPORATION, Tokyo (JP)
Filed on Aug. 30, 2022, as Appl. No. 17/898,532.
Claims priority of application No. 2021-140974 (JP), filed on Aug. 31, 2021.
Prior Publication US 2023/0062573 A1, Mar. 2, 2023
Int. Cl. B41J 2/045 (2006.01); B41J 2/14 (2006.01)
CPC B41J 2/04581 (2013.01) [B41J 2/04541 (2013.01); B41J 2/1408 (2013.01); B41J 2/14201 (2013.01); B41J 2202/20 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A liquid discharge device comprising:
a discharge head that includes a first discharge portion group having a first piezoelectric element and a first discharge portion discharging a liquid in response to a drive of the first piezoelectric element, and a second discharge portion group having a second piezoelectric element and a second discharge portion discharging a liquid in response to a drive of the second piezoelectric element;
a substrate; and
a first drive circuit, a second drive circuit, a third drive circuit, and a fourth drive circuit arranged side by side along one direction of the substrate, wherein
the first drive circuit outputs a first drive signal for driving the first piezoelectric element so that the first discharge portion discharges a liquid having a first discharge amount,
the second drive circuit outputs a second drive signal for driving the first piezoelectric element so that the first discharge portion does not discharge a liquid,
the third drive circuit outputs a third drive signal for driving the second piezoelectric element so that the second discharge portion discharges a liquid having a second discharge amount,
the fourth drive circuit outputs a fourth drive signal for driving the second piezoelectric element so that the second discharge portion does not discharge a liquid,
the third drive circuit is located between the first drive circuit and the second drive circuit along the one direction, and
a shortest distance between the fourth drive circuit and the second drive circuit is shorter than a shortest distance between the fourth drive circuit and the third drive circuit.