| 摘要 |
PROBLEM TO BE SOLVED: To solve the problem of deterioration of the throughput derived from prolongation of the ink supply time due to the need of supplying the ink taken into the main tank again to the ink buffer in the head after sticking the needle to the main tank at the time of ink supply for avoiding the problem of introduction of the ink in the ink buffer in the head into the main tank through the hollow part inside the needle at the time of sticking a needle to the main tank in the case the inside of the main tank has a negative pressure state since a negative pressure can be generated in a main tank depending on the aluminum package shrinking state at the time of ink supply in a conventional ink-jet printer. SOLUTION: In an ink-jet printer, at least two or more holes among a plurality of holes provided in a needle 50a are disposed with an interval larger than the thickness of the elastic member 51 as well as all the holes are provided at a position passing by the elastic member 51 after insertion. |
