Invention Grant
US08167407B2 Liquid discharge method, liquid discharge head and liquid discharge apparatus having projections within discharge port 有权
液体排出方法,排液头和在排出口内具有突起的排液装置

Liquid discharge method, liquid discharge head and liquid discharge apparatus having projections within discharge port
Abstract:
A liquid discharge head is arranged in a manner that in the cross-section of a discharge port perpendicular to a liquid discharge direction, the discharge port includes at least one projection that is convex inside the discharge port; a first area, for holding a liquid surface connecting a pillar-shaped liquid that is elongated outside the discharge port; and second areas where a fluid resistance is lower than that in the first area so as to pull the liquid in the discharge port in a direction opposite to the liquid discharge direction. The first area is formed in the direction in which the projection is convex, and the second areas are formed on both sides of the projection.
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