Patent ID: 6443366
Filing Date: 2002-09-03
Classification: B41J

Abstract:
A liquid-drop discharge device comprising a liquid storage tank, a liquid discharge means for discharging liquid supplied from the liquid storage tank, and a reaction cell provided with a space into which liquid is discharged from the liquid discharge means, the liquid discharge means comprising a discharge outlet provided at an end portion of a flow path opening to the reaction cell, an opening degree means for adjusting an opening degree of the discharge outlet, and an oscillating means for applying oscillation to liquid introduced into the flow path, wherein a flow of liquid that has been oscillated by the oscillating means is sucked and atomized from an air-contracting surface of the discharge outlet by an internal pressure of the reaction cell when P1&gE;P3 is satisfied, P1 being an internal pressure of the liquid storage tank and P3 being an internal pressure of the reaction cell.