Patent ID: 6854831

Claim:
A liquid discharge head comprising: a plurality of discharge ports for discharging liquid; a plurality of liquid flow paths which are in communication with respective ones of said discharge ports, each having a bubble generating area for creating a bubble in the liquid; bubble generating means for generating energy to create and grow the bubble; a plurality of liquid supply ports arranged for respective ones of said liquid flow paths to be in communication with a common liquid supply chamber; and a movable member supported with a minute gap to said liquid supply port on said liquid flow path side, and provided with a free end, the area of said movable member surrounded at least by an edge of the free end and both sides of said movable member continued therefrom being made larger than an opening area of said liquid supply port facing the liquid flow path, and the free end of said movable member being minutely displaced in said liquid flow path to said liquid supply port side in the initial stage of said bubble creation, and wherein along with the bubble extinction, the free end of said movable member is largely displaced in said liquid flow path to said bubble generating means side for supplying liquid from said common liquid supply chamber into said liquid flow path through said liquid supply port.