Patent ID: 6896361

Claim:
A method of manufacturing an ink jet head, comprising: a grooves/side walls forming step of forming on a substrate a plurality of grooves arranged in parallel with one another and side walls as partition walls between the grooves; a head substrate fabricating step of fabricating a head substrate by providing on the substrate an actuator for applying an ejecting pressure to ink fed into each of the grooves; a nozzle plate bonding step of bonding a nozzle plate to a front end face of the head substrate; and a top plate bonding step of bonding to one side of a head substrate directly or indirectly through a thermosetting adhesive, a top plate which covers the grooves and to which an ink supply member formed of a material having a thermal expansion coefficient higher than that of the head substrate is pre-bonded, while keeping the head substrate and the top plate superimposed one on the other and while applying to the head substrate and the top plate such a load as maintains the head substrate and the top plate in parallel with each other after-curing of the adhesive.