Patent ID: 6193359
Filing Date: 2001-02-27
Classification: B41J

Abstract:
An ink jet print head having ink passage ways connected to an ink discharging outlet provided on a substrate, said passage ways being formed by subjecting a layer of a radiation curable resin composition to exposure of said radiation in a pattern to thereby form a cured region of said resin composition and removing the uncured resin composition region from said layer, said radiation curable resin composition comprising:(A) about 5 to about 50 weight percent of a difunctional first epoxy compound;(B) about 0.5 to about 20 weight percent of a multifunctional second crosslinking epoxy compound;(C) about 1.0 to about 10 weight percent of a photoinitiator capable of generating a cation;(D) a silane having a functional group capable of reacting with at least one member selected from A, B and C; and(E) about 20 to about 90 weight percent of a non photoreactive solvent, wherein the weight percents are based on the total weight of the resin composition;said radiation curable resin being bonded on one side to a predominately silicon containing substrate and being bonded on the opposite side to said one side to a surface of phenolic butyral of a nozzle plate.