| 摘要 |
PROBLEM TO BE SOLVED: To enhance the reliability by evading the interference between a lock member to hold and house a leader pin and a slide door to open/close an opening part, and stably and surely executing the housing operation of the leader pin and the opening/closing operation of the slide door by the lock member. SOLUTION: A single reel 4 wound with the magnetic tape 20 is rotatably housed in a cartridge case 7, both end parts of the leader pin 21 which is fixed to a tip of the magnetic tape 20 are fixed and held by the lock member 30 attachably/detachably inside the opening part 26 opened/closed by the slide door 27. In such a case a recessed part 27a is arranged at least inside the slide door 27 confronted with a tip of the lock member 30 for evading the interference between both of them.
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