Patent ID: 6213592
Filing Date: 2001-04-10
Classification: B41J

Abstract:
A method for discharging liquid from a discharge port using a liquid jet recording head having said discharge port for discharging liquid, a liquid flow path communicating with said discharge port, a first heat generating area provided in said liquid flow path to apply thermal energy for discharging the liquid from said discharge port with bubble generation, a movable member provided upstream of said first heat generating area in said liquid flow path, wherein said movable member has a free end on said discharge port side, and a second heat generating area is provided facing said movable member, said movable member being shiftable upon the bubble generation at said second heat generating area, said method comprising the steps of:generating the bubble at said second heat generating area and shifting said movable member so as to reduce a liquid communication area between said discharge port side and a liquid supply side that is upstream of said discharge port side;moving the liquid to said discharge port side upon generation of the bubble in said first heat generating area while the bubble is generated in said second heat generating area; andmoving said movable member so as to increase the liquid communication area between said discharge port side and the liquid supply side that is upstream of said discharge port side while the bubble is present in said first head generating area after the bubble is generated in said second heat generating area.