Patent ID: 6260958
Filing Date: 2001-07-17
Classification: B41J,Y10T

Abstract:
A liquid ejection head comprising:a plurality of ejection outlets for ejecting a liquid;a plurality of liquid flow paths in fluid communication with said ejection outlets;a plurality of bubble generating regions for generating bubbles;a movable member disposed faced to said bubble generating regions and movable between a first position and a second position which is farther from said bubble generating region than the first position; wherein said movable member moves from said first position to said second position by pressure produced by the generation of the bubble to permit expansion of the bubble more in a downstream side closer to the ejection outlet than in an upstream side; anda first common liquid chamber in fluid communication with said liquid flow paths, having a height, measured in a direction perpendicular to a plane including said movable member at rest, which is larger than that of said liquid flow paths, wherein said movable member has a fulcrum in said first common liquid chamber and a free end in said liquid flow paths.