Liquid discharging method and liquid discharging head

Details Liquid discharging method and liquid discharging head Liquid discharging method and liquid discharging head

B - Operations, Transporting

41

J

B41J 2/05 (2006.01) B41J 2/14 (2006.01)

Patent

CA 2209871

A liquid discharging method which employs a liquid discharging head consisting of a liquid discharging port, a bubble generating region where the bubble generates in the liquid and a movable member that can move between a first position and a second position which is located at a point farther from the bubble generating region compared with the first position, wherein the movable member moves from the first position to the second position by the pressure of the bubble generated by the bubble generating energy in the bubble generating region, and at the same time the bubble expands farther toward the downstream direction compared with the upstream direction by the displacement of the movable member in order to discharge the liquid out of the liquid discharging port by the liquid discharging energy applied to such liquid. The movable member has its free end in the downstream side with respect to its fulcrum and the liquid is discharged by applying the discharging energy corresponding to a saturation domain where the amount of the liquid to be discharged out of the liquid discharging port is substantially saturated in accordance with the increase of the discharging energy.

Cette invention concerne une méthode d'éjection de liquide qui fait appel à une tête d'éjection à orifice; à une zone de formation de bulle dans le liquide; à un élément mobile entre une première position et une deuxième position plus éloignée de ladite zone de formation de bulle que la première position; au déplacement de l'élément mobile de sa première position vers sa deuxième position par la pression engendrée par la formation d'une bulle dans la zone de formation de bulle et en même temps à l'expansion plus prononcée de la bulle en direction aval, soit vers l'orifice d'éjection, que vers l'amont grâce au déplacement de l'élément mobile pour éjecter le liquide par l'orifice d'éjection. L'extrémité libre de l'élément mobile se trouve an amont de son point d'articulation et le liquide est éjecté par l'application d'une énergie correspondant au domaine de saturation où la quantité de liquide à être éjectée par l'orifice d'éjection est sensiblement saturée en fonction de l'augmentation de l'énergie d'éjection.

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