Patent ID: 6402971
Filing Date: 2002-06-11
Classification: B41J,Y10T

Abstract:
A method for manufacturing an ink jet recording head, comprising the steps of:(a) forming in a substrate, an ink chamber for supplying ink to a nozzle for jetting ink; (b) forming, on said substrate, a diaphragm for pressurizing ink in said ink chamber, a piezoelectric thin film serving as a pressurization source for said diaphragm, and an electrode for energizing said piezoelectric thin film; and (c) patterning both of said piezoelectric thin film and said electrode at the same time; wherein said step (b) comprises forming a common electrode for a pattern of a plurality of separate piezoelectric thin films and a separate electrode for each of said separate piezoelectric thin films; and wherein said step (c) comprises forming a projection area of each of said separate electrodes opposite to a surface of said common electrode to be the same as an area of an upper surface of each of said separate piezoelectric thin films, wherein said projection area is smaller than an area of said ink chamber which are opposed to each other.