Patent ID: 6464342
Filing Date: 2002-10-15
Classification: B41J

Abstract:
A liquid discharge head at least comprising:a discharge opening for discharging a liquid; a liquid flow channel in communication with said discharge opening and for supplying said liquid to said discharge opening; a substrate equipped with a heat generator for producing a bubble in the liquid that is filled in the liquid flow channel; and a movable plate supported and fixed onto said substrate at a position of said substrate opposed to said heat generator and with a gap from said substrate, with a free end on the discharge opening side, said liquid discharge head discharging the liquid from said discharge openings by forcing the free end of said movable plate to be displaced toward said discharge opening around a fulcrum portion made near a supporting and fixing portion of said movable plate with said substrate due to pressure caused by produced bubble, wherein said movable plate is formed in a film formation process at least two times or more.