| 摘要 |
PROBLEM TO BE SOLVED: To eliminate fluctuation in the aspiration amount in liquid aspiration operation by use of a tube pump. SOLUTION: The apparatus is a tube pump for discharging the fluid in a capping means sealing a nozzle formation surface of a liquid injection head. The apparatus has a roller member which rolls on the inner circumference of a curvature of a tube member while press-deforming the curvature, and is provided with a tube pump having a leak point, a phase detection means for detecting the revolution phase of the roller member, and a control means for controlling the movement of the tube pump. The control means has a function for stopping the roller member at a predetermined position based on the information relating to the revolution phase of the roller member detected by the phase detection means. COPYRIGHT: (C)2005,JPO&NCIPI |
