Patent attributes
A liquid material discharge device includes: a plunger including a piston formed at a rear end a piston chamber in which the piston is disposed and to which pressurized gas is supplied; a pressure supply device that supplies, to the piston chamber, air pressurized in excess of the urging force of the elastic body, or that purges pressurized air out of the piston chamber, the liquid material discharge device discharging the liquid material from the discharge port by causing the plunger to move forward and applying an inertial force to the liquid material; a booster circuit that communicates the pressure supply device and an air source with each other, and the booster circuit includes a first and a second booster system including a booster valve and a pressure reducing valve, and a merging section in which the first booster system and the second booster system merge together.
