Patent ID: 7340831

Claim:
A method for making a liquid discharge head comprising liquid discharge openings, a liquid channel having pressure chambers communicating with the liquid discharge openings, and piezoelectric elements corresponding to the pressure chambers and arranged in the form of teeth of a comb, the method comprising the steps of: (a) filling gaps between the piezoelectric elements with a filler; (b) forming a liquid channel pattern on a flat surface including end faces of the piezoelectric elements and the filler filling the gaps between the piezoelectric elements; (c) forming a coating layer on the liquid channel pattern; and (d) removing the liquid channel pattern to form the pressure chambers, wherein the liquid channel pattern is light-transmissive, and in step (b), the liquid channel pattern is aligned using alignment means provided to the piezoelectric elements, the alignment means being visible through the light-transmissive liquid channel pattern.