Patent ID: 6386832
Filing Date: 2002-05-14
Classification: B41J

Abstract:
A liquid discharge head comprising:a heating member for generating thermal energy to create a bubble in liquid; a discharge port adapted to discharge the liquid; a liquid flow path communicated with said discharge port having a bubble generating area for enabling the liquid to create the bubble; a movable member arranged in said bubble generating area to be displaced along with the development of the bubble; a regulating portion to regulate the displacement of said movable member within a desired range, and by means of energy at the time of bubble creation, the liquid being discharged from said discharge port, wherein said regulating portion is arranged to face said bubble generating area in said liquid flow path; and a support member directly connected to said movable member, said bubble development causing said movable member and said regulating portion to be in contact forming an essentially closed space with the exception of said discharge port.