Patent ID: 8251491

Claim:
A method of manufacturing an ink jet head, comprising: forming a nozzle surface having a liquid repellent characteristic by applying a photo-polymerizable liquid repellent material on a photo-polymerizable resin layer, and conducting pattern-exposure of the photo-polymerizable liquid repellant material and the photo-polymerizable resin layer simultaneously and development of the photo-polymerizable liquid repellant material and the photo-polymerizable resin layer simultaneously, wherein the photo-polymerizable liquid repellent material comprises a condensation product made from a hydrolyzable silane compound having a fluorine containing group and a hydrolyzable silane compound having a cationic polymerizable group, and wherein the hydrolyzable silane compound having a fluorine containing group is represented by the following general formula: R f —Si(R) b X (3-b) , where R f is a non-hydrolyzable substituent having 1 to 30 fluorine atoms bonded to a carbon atom, R is a non-hydrolyzable substituent, X is a hydrolyzable substituent, and b is an integer from 0 to 2.