Patent ID: 7926918

Claim:
A head for a liquid-droplet jetting apparatus including a vibration plate which covers a plurality of pressure chambers extending in a predetermined direction, and an insulating layer and a piezoelectric layer which are stacked in this order on a surface of the vibration plate, the surface not facing the pressure chambers, the method comprising: individual electrodes each of which is formed on one surface of the piezoelectric layer to cover a central portion of one of the pressure chambers; first common electrodes each of which is formed on the surface of the piezoelectric layer to cover both sides in a longitudinal direction of an inner peripheral portion of one of the pressure chambers; second common electrodes each of which is formed on the other surface of the piezoelectric layer to cover partially two adjacent pressure chambers among the plurality of pressure chambers; and third common electrodes each of which is formed on the other surface of the piezoelectric layer to cover the central portion of one of the pressure chambers.