| 摘要 |
PROBLEM TO BE SOLVED: To prevent leakage of ink or intrusion of air through an ink supply opening. SOLUTION: In the vicinity of the ink supply opening 2 of a container 1, a valve element 60 for normally closing the ink supply opening 2 by an energizing force and being pushed to open the ink supply opening 2 upon insertion of an ink supply needle 70 is provided. |
