| 摘要 |
<p>A valve structure adapted to open only at a normal discharge pressure of a liquid is arranged upstream of a discharge port of a nozzle head on a trigger type liquid discharge device, and a flow passage, through which a residual pressure in a liquid flow passage at the completion of discharge is returned to a liquid vessel, is provided in a cylinder on a pump mechanism to thereby prevent insufficiency in a discharge pressure of a liquid being discharged or liquid dripping from the discharge port at start-up of discharge or at the completion of discharge due to the residual pressure in the liquid flow passage.</p> |
