Method for discharge of liquid and liquid discharge head

摘要

A liquid discharge head is provided which allows production of a recorded image of improved quality by controlling the speed of flow of a liquid and the distribution of the speed of flow in a flow path caused in consequence of contraction of bubbles thereby stabilizing the direction of satellites arising behind main drops of discharged liquid and, at the same time, decreasing the amount itself of the satellites. This liquid discharge head comprises a movable separation membrane capable of effecting separation between a first flow path (3) communicating with a discharge port (11) for discharging a liquid and a second flow path (4) furnished with a bubble generating region for generating bubbles in the liquid by means of a heating element (2) and a movable member (26) opposed to the bubble generating region across the movable separation membrane (5) and furnished in the direction of liquid discharge with a free end to guide the displacement of the movable separation membrane induced by the growth of the bubbles in the direction of the discharge port and regulate the shape of displacement of the movable separation membrane as well.