Patent ID: 6139761
Filing Date: 2000-10-31
Classification: B41J

Abstract:
A manufacturing method for an ink let head having an ink election pressure generation element for generating energy for electing ink, and an ink supply port for supplying the ink to an ink jet head, comprising the steps of:preparing a silicon substrate;forming, on a surface of the silicon substrate, the ink ejection pressure generation element and silicon oxide film or silicon nitride film;forming anti-etching mask for forming an ink supply port on a back side of the silicon substrate;removing silicon on the back side of the silicon substrate at a position corresponding to the ink supply port portion through anisotropic etching;forming an ink election portion on a surface of the silicon substrate by the steps of forming an ink flow path with a soluble resin material, forming a coating resin material layer on the soluble resin material layer, and forming the ink ejection outlet on the coating resin material layer; andremoving the silicon oxide film or silicon nitride film from the surface of the silicon substrate of the ink supply port portion.