Patent ID: 7237876
Filing Date: 2007-07-03
Classification: B41J,Y10T

Abstract:
1. An ink-jet head comprising: a passage unit that has a plurality of pressure chambers and a plurality of nozzles communicating with the respective pressure chambers, an actuator unit that is adhered to the passage unit and changes the volume of the pressure chambers to thereby eject ink through the nozzles, and a cable member that supplies a drive signal to the actuator unit; wherein the actuator unit includes: a piezoelectric element sandwiched by a common electrode and a plurality of surface electrodes, the plurality of surface electrodes being formed on the piezoelectric element at positions corresponding to the respective pressure chambers, a plurality of first lands formed on the piezoelectric element to be connected to the respective surface electrodes, the first lands having a higher height from a surface of the piezoelectric element than that of the surface electrodes and being connected to the cable member, and a plurality of second lands formed on the piezoelectric element to be spaced from the respective surface electrodes, the second lands having substantially the same height from the surface of the piezoelectric element as that of the first lands.