Patent ID: 6473966
Filing Date: 2002-11-05
Classification: B41J,Y10T

Abstract:
A method of manufacturing an ink jet printer head having a substrate provided with a plurality of energy generating elements for generating pressure energy for ejecting ink and an orifice plate located on said substrate and having a plurality of ejection nozzles formed therein for ejecting ink in a predetermined direction by pressure generated by said energy generating elements, said method comprising the steps of:forming an etching mask film having a pattern corresponding to said ejection nozzles in said orifice plate before formation of said ejection nozzles; forming said plurality of ejection nozzles in said orifice plate by helicon-wave dry etching while cooling the ink jet printer head substrate having said orifice plate with said mask film placed on a bottom of said substrate with a coolant gas; and forming an ink feed passage between from said bottom of said substrate to a top surface thereof, and wherein said ink feed passage is blocked before supply of said coolant gas starts and after said step of forming the ink feed passage, after formation of said ejection nozzles is complete, supply of said coolant gas is stopped, and blocking of said ink feed passage is released.