Patent ID: 6783214
Filing Date: 2004-08-31
Classification: B41J

Abstract:
An inkjet head, comprising:a plurality of pressure chambers, each of which being configured such that an end thereof is connected to a discharging nozzle and the other end is connected to an ink supplier; and an actuator unit for the plurality of pressure chambers, said actuator unit including: a plurality of inactive layers made of piezoelectric material, said plurality of inactive layers being arranged on a pressure chamber side to cover said plurality of pressure chambers; and at least one active layer made of piezoelectric material, said at least one active layer being arranged on an opposite side of said pressure chambers with respect to said plurality of inactive layers, said at least one active layer being segmented so as to correspond to said plurality of pressure chambers, wherein each segment of said at least one active layer is sandwiched between a common electrode and a driving electrode.