Patent ID: 6455112
Filing Date: 2002-09-24
Classification: B41J

Abstract:
A method of manufacturing an ink jet recording head, comprising the steps of forming an ink flow path pattern on a substrate using a dissoluble resin of a positive photosensitive material which forms a dissoluble resin layer, the substrate having ink ejection pressure generating elements thereon, and forming a coating resin layer on the substrate as well as on sides of the dissoluble resin layer,wherein the coating resin layer is obtained by photopolymerizing a composition including a cationically polymerizable epoxy resin, a cationic polymerization initiator and a non-polar solvent that does not deform the dissoluble resin, which will serve to form ink flow path walls, and wherein the cationically polymerizable epoxy resin is polymerized by activating the cationic polymerization initiator, the dissoluble resin layer is dissolved to form an ink flow path, the cationically polymerizable epoxy resin is a cationically curable composition of an epoxy resin having a structural unit expressed by the following formula (I) or (II), the epoxy resin being soluble in the non-polar solvent which does not deform the resin forming the ink flow path pattern, the coating resin layer is formed by solvent coating using the solvent, and the coating resin layer is cured by the photopolymerizing followed by being heated: