Patent ID: 8167407
Filing Date: 2012-05-01
Classification: B41J

Abstract:
1. A liquid discharge method for discharging liquid from a discharge port by applying energy to the liquid, said method comprising the steps of: driving liquid through the discharge port, which includes, in a cross-section of the discharge port, perpendicular to a liquid discharge direction, two projections projecting toward an inside of the discharge port; retracting a liquid surface that is positioned on both sides of the two projections and an area between the two projections in the discharge port while the liquid positioned in the area is connected to a pillar-shaped liquid and in contact with the two projections; and separating the pillar-shaped liquid from the liquid positioned in the area to discharge the liquid from the discharge port while the liquid positioned in the area is in contact with the two projections after the retracting is commenced.