| 摘要 |
PROBLEM TO BE SOLVED: To provide a magazine capable of changing the size of the recording material to be housed without changing a dog, capable of accurately detecting the size and the existence of the recording material to be housed, and capable of easily knowing the size and the existence of the recording material to be housed. SOLUTION: An equipment body having a cover body freely to be opened and closed has a sealed structure, and has a light permeating part at least at a part of the equipment body.
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