Patent ID: 6796640
Filing Date: 2004-09-28
Classification: B41J

Abstract:
A liquid-jet head comprising:a passage-forming substrate including at least two rows of pressure generating chambers communicating with nozzle orifices and being defined by a plurality of compartment walls; and piezoelectric elements each composed of a lower electrode, a piezoelectric layer and an upper electrode, the piezoelectric element being provided on one surface side of the passage-forming substrate with a vibration plate interposed therebetween, wherein a joining plate joined onto the piezoelectric element side of the passage-forming substrate is provided, on which a drive circuit for driving the piezoelectric elements is mounted, a penetrated hole penetrating the joining plate in a thickness direction is provided in a portion corresponding to a space between the rows of the pressure generating chambers, extracted wirings each extracted from a corresponding piezoelectric elements is extended to the portion corresponding to the penetrated hole, and the extracted wirings and the drive circuit are electrically connected to each other with conductive wires extended through the penetrated hole.