| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To solve such a problem that ink in a head tank cannot be sufficiently stirred, consequently ink in a supply tube and the ink in the head tank are not homogenized. <P>SOLUTION: Whether the downtime of a liquid sending pump 241 becomes a preset predetermined time or longer is discriminated by checking a time counting means 520, when the downtime of the liquid sending pump 241 becomes the preset predetermined time or longer, the liquid sending pump 241 is reversely driven to reversely send the preset set amount of ink at a stroke from the head tank 35 to an ink cartridge 10, thereafter, the liquid sending pump 241 is normally driven to send the ink at a stroke from the ink cartridge 10 to the head tank 35 until the predetermined amount of ink is stored in the head tank 35. <P>COPYRIGHT: (C)2013,JPO&INPIT</p> |
