| 摘要 |
PROBLEM TO BE SOLVED: To solve the problem that when an ink passage 111 is sealed together with a backflow inhibitor 106, the rear end of the ink passage 11 is sealed so that no ink is dropped to become impossible to write. SOLUTION: A writing instrument comprises an ink container for containing the ink. The container has a large-diameter section and a small-diameter section. The container also has a flow passage formed on an inner surface of a coupling part of the large-diameter section to the small-diameter section. The container also has an ink backflow preventer made of a soft material and a hard material interleaved in therein. |
