Liquid-drop discharge device

摘要

The liquid-drop discharge device is comprised of a liquid discharge means for discharging liquid within a float cell communicating to a liquid storage tank, a reaction cell for collecting discharged fluid, and a differential adjusting tube provided between the float cell and the reaction cell and comprising a release valve for maintaining a specified relationship between an internal pressure P2 of the float cell and an internal pressure P3 of the reaction cell; a driving circuit for driving a pressurizing source of the liquid discharge device is connected to a control unit while the control unit is connected to a pressure sensor for detecting the internal pressure of the reaction cell and the release valve; and the internal pressure P1 of the liquid storage tank is controlled to be larger than the internal pressure P3 of the reaction cell. <IMAGE>