Patent ID: 6626521
Filing Date: 2003-09-30
Classification: B41J

Abstract:
A method for manufacturing a liquid jet recording head provided with a plurality of discharge openings for discharging a liquid and a plurality of associated liquid passages communicated therewith, comprising the steps of:forming a solid layer made of a positive-type photosensitive resin on a substrate, corresponding to a pattern of the liquid passages to be formed, the solid layer having a plurality of recessed portions; forming liquid passage walls by laminating a liquid passage wall forming member to the solid layer; hardening the liquid passage walls by adding a filler material, wherein the filler material is made of a positive-type resist, and the hardening of the filler material is effected by heating the filler material for a period of ten to twenty minutes at a temperature of 130 degrees Celsius; heating the solid layer to a hardness equal to at least a pencil hardness H; polishing a surface on which the discharge openings communicating with the liquid passages are disposed; and removing, after the polishing is completed, the filler material from the liquid passages.