Patent ID: 9340024
Filing Date: 2016-05-17
CPC Classification: B41J,H05K,Y10T

Claim Text:
1. A method of manufacturing a liquid jet head, the method comprising: providing a plurality of piezoelectric substrates each having an upper surface, a lower surface, and side surfaces, the plurality of piezoelectric substrates being made of a high dielectric material and including bonding surfaces formed by joining together the side surfaces of the piezoelectric substrates; forming a laminated substrate by bonding the lower surfaces of the plurality of piezoelectric substrates onto a base substrate made of a low dielectric material; forming, in a top surface of the laminated substrate formed by the upper surfaces of the plurality of piezoelectric substrates, a plurality of grooves having a depth reaching to the base substrate and arranged in parallel to the bonding surfaces of the plurality of piezoelectric substrates, the plurality of grooves being formed by alternately forming discharge grooves serving as channels for discharging liquid and dummy grooves serving as dummy channels that do not discharge the liquid, the dummy grooves being formed at the bonding surfaces of the laminated substrate; removing the joined side surfaces of the plurality of piezoelectric substrates when the plurality of grooves are formed; forming drive electrodes on side surfaces of the plurality of grooves; bonding a cover plate to the laminated substrate so as to cover the plurality of grooves; and bonding a nozzle plate to the laminated substrate.