PURPOSE: To miniaturize a subject device by providing an ejection mechanism which protrudes a desired disk over an aperture part in a magazine.

CONSTITUTION: When a disk D in space S3 is selected and ejected, a pressing member 6d is driven in a direction of (β) by a selection mechanism B. At this time, an ejection pin 6c presses the part (c) of the disk D in the direction of an aperture 3. The operation of a movable plate 6 at that time is performed as circular motion in the direction of (β) centering a shaft 7, however, the disk D is slided with the inner wall of a case 1, etc., by the above operation, and the tip of the disk is protruded over the aperture 3. Thereby, a driving mechanism can be arranged at the front of the magazine, therefore, it is not required to arrange the driving mechanism for an ejecting operation by extending to the backward of the magazine, which enables the device to be miniaturized.