Patent ID: 6457221
Filing Date: 2002-10-01
Classification: B41J,H04R,Y10T

Abstract:
A manufacturing method of actuator for ink jet printer head comprising steps of providing a silicon wafer;forming an etching stop layer on bottom side of said silicon wafer; forming a vibration plate made of silicic material; bonding said vibration plate onto bottom side of said etching stop layer by way of heat treatment; forming a chamber plate made of silicic material; forming a chamber on said chamber plate by way of full etching of said chamber plate; bonding said chamber plate where said chamber is formed, onto bottom side of the vibration plate by way of heat treatment; completing an actuator infrastructure by removing said silicon wafer; forming a lower electrode on said infrastructure; forming a piezoelectric/electrostrictive film which actuates when electrified, in a definite pattern upon said lower electrode; and forming an upper electrode upon said piezoelectric/electrostrictive film.