| 摘要 |
PROBLEM TO BE SOLVED: To provide a core cotton replacing type cartridge which enables gentle opening of a cap for closing up a cartridge barrel, without pulling it, and enables prevention of spring-out of a core cotton kept in the barrel and scattering of ink. SOLUTION: In the cartridge 12 holding the core cotton 10 which keeps ink or a coating solution of a writing implement or the like, indented parts 14b and 16b for maintaining airtightness on the occasion of fitting are formed in the circumferential direction in the mutual fitting parts of the cartridge barrel 14 and the cap 16, and a projecting part 18 projecting in the longitudinal direction is formed on the cap 16 on one side, while a recess part 20 for guiding the projecting part 18 is formed in the cartridge barrel 14 on the other side. When the cartridge barrel 14 and the cap 16 are rotated relatively, the slants of the projecting part 18 and the recess part 20 slide on each other and the cap 16 moves in the direction of the length of the cartridge barrel 14. |
