Patent ID: 6315853
Filing Date: 2001-11-13
Classification: B41J,Y10T

Abstract:
A method for manufacturing an ink jet recording head by combining each of the following steps to fabricate a heater board, comprising:(I) a first step of forming on a substrate a resistive layer constituting a heat generating portion to supply thermal energy for discharging an ink to the ink, and patterning said resistive layer;(II) a second step of forming a first protection layer on said substrate after said first step, and forming a groove portion by removing only an area portion of a wiring electrode layer to be formed later until said resistive layer is exposed;(III) a third step of laminating a layer formed by material for use of said wiring electrode layer on said substrate after said second step so as to be electrically connected to said resistive layer;(IV) a fourth step of continuously applying a heat treatment to a surface of said substrate after said third step to enable the material layer formed by the material for use of said wiring electrode layer to flow into only said groove portion of the first protection layer formed in said second step, making the surface flat, as a result thereof, at least a pair of wiring electrode layers being formed in a single-crystalline state, said resistive layer disposed between said pair of wiring electrode layers being arranged to be a heat generating portion as an electrothermal converting member; and(V) a fifth step of forming a second protection layer for covering said electrothermal converting member on said substrate after said fourth step.