Patent ID: 6913349

Claim:
An ink-jet head comprising: a passage unit including a plurality of pressure chambers each having one end connected with a nozzle and the other end to be connected with an ink supply source, the plurality of pressure chambers being arranged along a plane and neighboring each other; an actuator unit fixed to a surface of the passage unit for chanting the volume of each of the pressure chambers; and an electricity feeding member for supplying a drive signal to the actuator unit; wherein the actuator unit comprises: a common electrode maintained at a constant potential; a plurality of individual electrodes arranged at positions corresponding to each pressure chamber; and a plurality of piezoelectric sheets which are sequentially laminated, the piezoelectric sheet most distant from the pressure chamber being sandwiched between the common electrode and at least one of the individual electrodes, and each of the individual electrodes, arranged on a face of the piezoelectric sheet most distant from the pressure chamber, facing the direction opposite to the pressure chamber, being electrically bonded to the electricity feeding member at each of a plurality of electric contacts on the individual electrode.