Patent ID: 6964472
Filing Date: 2005-11-15
Classification: B41J,H01L

Abstract:
1. An ink jet print head, comprising: a cavity plate that includes a plurality of nozzles and a plurality of pressure chambers communicating with the respective nozzles; a plate-like piezoelectric actuator formed into a single laminated structure by laminating a plurality of piezoelectric sheets including a plurality of electrodes which are formed at positions so as to be aligned with the respective pressure chambers, the laminated piezoelectric actuator sintered and bonded to the cavity plate so as to close the pressure chambers provided in the cavity plate; surface electrodes provided at an end portion of a surface of the piezoelectric actuator, which is opposed to a surface to be bonded to the cavity plate, and electrically connected with the plurality of electrodes; and protrusions that each has a thickness of the surface electrodes and is provided on the surface of the piezoelectric actuator at a location corresponding to the surface where the surface electrodes are not provided.