Patent ID: 6973703

Claim:
A method for manufacturing an ink-jet head including: a passage unit including a plurality of pressure chambers each having one end coupled to a nozzle and another end to be coupled to an ink supply source, the plurality of pressure chambers being arranged along a same plane adjacent to each other; and a plurality of actuator units attached to a surface of the passage unit for changing a volume of each of the pressure chambers, each actuator unit having a common electrode kept at a constant potential, a plurality of individual electrodes disposed at positions respectively corresponding to the pressure chambers, and a piezoelectric sheet sandwiched between the common electrode and the individual electrodes, the method comprising: forming a mark on the surface of the passage unit; preparing a member containing the piezoelectric sheet on which the common electrode is supported; attaching the member to the surface of the passage unit; and after attaching the member to the surface of the passage unit, forming the individual electrode, with respect to a position of the mark, on a face of the member facing a direction opposite to an attached face thereof to the passage unit.