Process of producing liquid discharge head

摘要

Provided is a process of producing a liquid discharge head having a substrate, a passage-forming member, and a patterned layer. The process includes providing a resin layer on a substrate; providing a resist pattern on the resin layer for patterning the resin layer; forming a patterned layer by patterning the resin layer using the resist pattern as a mask; providing a layer for forming a passage pattern having a shape of passage on the resist pattern lying on the patterned layer; forming a passage pattern by patterning the layer for forming a passage pattern; removing the resist pattern; providing a passage-forming member so as to cover the passage pattern and the patterned layer; and removing the passage pattern to give the passage.