| 摘要 |
PROBLEM TO BE SOLVED: To increase the ejection amt. of a liquid from ejection orifices and to increase a refill speed. SOLUTION: Two sets consisting of heating elements 2a, 2b provided in air bubble generating regions 7a, 7b in order to generate heat for generating air bubbles, bubble forming liquid passages 4a, 4b equipped with the air bubble generating regions 7a, 7b and movable separation membranes 5a, 5b always mutually and substantially separating an ejection liquid passage 3 and the bubble generating liquid passages 4a, 4b are provided so as to hold the ejection liquid passage 3 in a mutually opposed state and displaced so that two movable membranes 5a, 5b approach each other accompanied by the generation of air bubbles to eject the liquid in the ejection liquid passage 3 from an ejection orifice 1. |
