VACCUM GENERATING APPARATUS OF INK JET PRINTER

摘要

PURPOSE: A sound pressure generation device of an ink-jet printer is provided to prevent the backward flowing of ink from a printer head through a flowing backward prevention filter. CONSTITUTION: A sound pressure generation device of an ink-jet printer comprises a printer head(10), a valve(20), a pump, a reservoir, a sound pressure sensor(50) and a sound pressure control device. The printer head has a plurality of nozzles emitting ink. The valve controls the flow of the sound pressure formed in the printer head. The pump constitutes the sound pressure in the printer head. The reservoir reduces the pulsating of the sound pressure by the pump. The sound pressure sensor measures the sound pressure formed in the printer head. The sound pressure control device controls the sound pressure measured by the sound pressure sensor.