Patent ID: 6604817
Filing Date: 2003-08-12
Classification: B41J

Abstract:
A piezoelectric ink jet printer print head comprising:a piezoelectric actuator in the form of a plate including a first piezoelectric sheet having a first face and a second face opposed the first face, and a side face connecting the first and second faces, the piezoelectric actuator further including a plurality of drive electrodes lying on the second face of the sheet, a common electrode lying on the first face of the piezoelectric sheet so as to position over the drive electrodes, and side electrodes formed on the side face of the sheet so as to be connected to the drive electrodes; and a cavity plate having pressure chambers open on one side of the plate, nozzles each communicating with one of the chambers, and a recess formed on the one side; the piezoelectric actuator lying on the one side of the cavity plate in such a manner that the actuator closes the pressure chambers, the drive electrodes being each aligned with one of the chambers, the side electrodes being aligned with the recess to be kept out of contact with the cavity plate.