Drive unit, liquid ejecting head unit, and liquid ejecting apparatus
AssigneeSeiko Epson Corporation
InventorHirokazu Yanagihara
Life of this patent
Estimating the term…
Abstract
A drive unit is configured to generate a drive signal for driving a liquid ejecting head unit. The drive unit includes a drive board on which a drive circuit configured to generate the drive signal is mounted; a thermal conductive material that is in contact with the drive circuit on an opposite side in relation to the drive board; a water cooling mechanism that is in contact with the thermal conductive material on an opposite side in relation to the drive circuit; a pump that causes liquid in the water cooling mechanism to flow; and a control circuit that controls operation of the pump. 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.
Claims6
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.
A liquid ejecting head unit, comprising:
- a drive unit configured to generate a drive signal for driving the liquid ejecting head unit;
- and
- a head,
- the head including
- an ejecting orifice that, upon receiving a drive signal supplied from the drive unit, ejects liquid from a nozzle provided in a nozzle surface, and
- a collective board that includes a head connector,
- the drive unit including
- 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.
A liquid ejecting apparatus, comprising:
- a plurality of sets each including a plurality of liquid ejecting head units and a transportation unit, the liquid ejecting head unit including a drive unit and a head, the drive unit being configured to generate a drive signal for driving the liquid ejecting head unit,
- the head including
- an ejecting orifice that, upon receiving a drive signal supplied from the drive unit, ejects liquid from a nozzle provided in a nozzle surface, and
- a collective board that includes a head connector,
- the drive unit including
- 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.
Dependencies are inferred from the claim text.