| 摘要 |
PROBLEM TO BE SOLVED: To carry out venting from an ink passage between an ink storage part and an inkjet head by a simple structure. SOLUTION: A second ink passage pipe 6 extended downward to form a T character form at the other end side of an ink passage pipe 2 having one end connected to the ink storage part 1, and an air bubble vent pipe 7 extended upward are connected to each other. A valve 10 which is driven to open and close is set in the middle of the air bubble vent pipe 7. A drive part 3 is set which feeds ink inside the ink storage part 1 to the ink jet head 5 side through the ink passage pipe 2 and the second ink passage pipe 6. The drive part 3 is driven in a state with the valve 10 closed, and air bubble in the ink passage pipe 2 are once sent into the second ink passage pipe 6 with the ink. Thereafter, the driving of the drive part 3 is stopped and the valve 10 is released, whereby air bubbles in the ink are raised from the second ink passage pipe 6 to the air bubble vent pipe 7. Air bubble vent is thus carried out. COPYRIGHT: (C)2004,JPO |
