Patent ID: 6186616
Filing Date: 2001-02-13
Classification: B41J

Abstract:
An ink jet head comprising:a plurality of discharge pressure generating elements serving as the discharge pressure source for discharging an ink droplet;an orifice plate having a plurality of ink discharge ports corresponding to said respective discharge pressure generating elements formed therefor;an ink supply port for supplying ink;a nozzle wall forming an ink flow path communicating said ink discharge ports with said ink supply port,said orifice plate and said nozzle wall being formed by resin material,a thin metallic film having been vapor deposited onto only a side surface which becomes an outer surface of said orifice plate; anda water-repellent film formed by eutectoid plating a metal and a water-repellent resin onto a surface of the thin metallic film after removing the ink discharge port portion of the thin metallic film.