US 12,434,474 B2
Drive unit, liquid ejecting head unit, and liquid ejecting apparatus
Hirokazu Yanagihara, Nagano (JP)
Assigned to Seiko Epson Corporation, Tokyo (JP)
Filed by SEIKO EPSON CORPORATION, Tokyo (JP)
Filed on Sep. 28, 2023, as Appl. No. 18/476,404.
Claims priority of application No. 2022-157653 (JP), filed on Sep. 30, 2022.
Prior Publication US 2024/0109309 A1, Apr. 4, 2024
Int. Cl. B41J 2/045 (2006.01); B41J 2/515 (2006.01); B41J 29/377 (2006.01)
CPC B41J 2/04581 (2013.01) [B41J 2/04515 (2013.01); B41J 2/0454 (2013.01); B41J 2/515 (2013.01); B41J 29/377 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A drive unit configured to generate a drive signal for driving a liquid ejecting head unit, the drive unit comprising:
a drive board on which a drive circuit configured to generate the drive signal is mounted;
a thermal conductive material including a first surface and a second surface that is opposite to the first surface and faces away from the first surface in an opposite direction, the first surface being in contact with the drive circuit such that the drive circuit is disposed between the thermal conductive material and the drive board in the opposite direction;
a water cooling mechanism that is in contact with the second surface of the thermal conductive material, such that the thermal conducive material is disposed between the drive circuit and the water cooling mechanism in the opposite direction;
a pump that causes liquid in the water cooling mechanism to flow; and
a control circuit that controls operation of the pump, wherein
the control circuit switches a direction in which the pump causes the liquid to flow between a forward direction and a reverse direction that is an opposite of the forward direction.