| 摘要 |
A magazine for accommodating a plurality of disks positioned upright is rotatably mounted on a chassis covered with a cabinet. An escape preventing ring is provided above the chassis outside the magazine, and the cabinet is formed in a side wall thereof with an opening for withdrawing a disk from the magazine therethrough. The ring has a cutout portion positioned as opposed to a closure. Attached to the closure is a slipping-off preventing piece fittable in the cutout portion when the closure is fitted in the opening. A shaft provided upright in the vicinity of the opening carries an auxiliary gear meshable with an annular toothed face of the magazine. The slipping-off preventing piece has a projecting piece for moving the gear away from the toothed face when the closure is fitted in the opening.
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