| 摘要 |
<p>To eliminate influence of discharge amounts depending on changes in liquid level of a liquid storage tank and to improve discharge accuracy of a liquid discharging apparatus. <??>By a pressure regulating opening portion for forming a reference liquid surface maintaining a given pressure, pressure inside a pump chamber before a discharging operation is kept constant without affecting liquid level existing in the liquid storage tank. Therefore, volume of the inside of the pump chamber is kept constant and liquid can be discharged with higher precision.</p> |
