Patent ID: 6821716
Filing Date: 2004-11-23
Classification: B41J

Abstract:
A method of manufacturing an ink-jet recording head comprising a substrate having a surface on which protrusion portions and recess portions between them are formed, comprising steps of:forming an oxide film on the surface of the substrate; forming a photosensitive resin film on the oxide film; photolithographically patterning the photosensitive film so as to form regularly arranged areas for the protrusion portions; removing the oxide film at areas for recess portions in accordance with the patterned photosensitive film; etching the surface of the substrate in arranged areas for the recess portions in accordance with the etched oxide film as a mask, so as to form the protrusion portions; forming nozzle holes in the substrate; and depositing a water repellant material on the surface of the substrate.