| 摘要 |
PURPOSE: To prevent the generation of wasteful ink caused by ink replenishing work at the time of the replenishment of ink from a replenishing tank to an ink supply tank in the ink supply system of an ink jet image forming apparatus. CONSTITUTION: A supply tank a 1200 is replenished with the ink in a replenishing tank 1300 by a pump 1310 through a replenishing route 1320 but, at this time, the ink becoming excessive in the supply tank 1200 by replenishing operation is returned to the ink replenishing tank 1300 through a drain 1230 and an excessive route 1350. |
