| 摘要 |
An ink-jet head device using a stack of piezoelectric bodies, including a nozzle plate (11) on which at least one nozzle (12) is formed, a manifold portion (51) having a restrictor plate (41) on which at least one restrictor (40) is formed, a plurality of piezoelectric bodies (22) stacked in multiple layers and interposed between the nozzle plate and the manifold portion to form a chamber (20) for containing ink, each of the piezoelectric bodies having a cavity at the center; common electrodes (23) and driving electrodes (24) alternately interposed one by one between adjacent piezoelectric bodies, and a medium (25) interposed at least between the restrictor plate and a piezoelectric body adjacent to the restrictor plate, and between the nozzle plate and a piezoelectric body adjacent to the nozzle plate, the medium deformed corresponding to deformation of the piezoelectric bodies. In this device, the cavities of the piezoelectric bodies stacked in multiple layers are applied as the chamber for containing ink. Accordingly, the device can solve the problems of an existing bending- or pushing-type ink-jet head device using a vibrating plate, and reduce the area of the ink head device. Also, a pressure to ink increases, and the volume of the chamber can be greatly changed even at low voltage. <IMAGE> |
