Patent ID: 7537313
Filing Date: 2009-05-26
Classification: B41J

Abstract:
1. A liquid-jet head comprising: a passage-forming substrate on which pressure generating chambers communicating with a nozzle orifice ejecting liquids are respectively formed separately from each other; and actuator devices each including a vibration plate provided on the passage-forming substrate, wherein a protection substrate is joined to a side of the passage-forming substrate, the side facing the actuator devices, and driver circuits for driving the actuator devices are provided on the protection substrate, wherein each of the driver circuits is provided with individual terminals to which individual electrodes of the respective actuator devices are electrically connected, and connection terminals to which an external wiring line formed of a flexible print circuit is directly connected through an anisotropic conductive material, and the each of the driver circuits is also provided with a common terminal electrically connected to a common electrode common to more than one of the actuator devices, and a common connection terminal which is connected to the common terminal through a conductive wiring line and to which an external wiring line is directly connected through an anisotropic conductive material, wherein the conductive wiring line is connected to the common terminal and the common connection terminal, wherein the conductive wiring line is provided on an outer surface of the each of the driver circuits, and wherein the external wiring line and the common terminal are connected without passing an inside of the each of the driver circuits.