Patent ID: 7000240
Filing Date: 2006-02-14
Classification: G11B

Abstract:
1. A cartridge comprising: a cartridge body consisting of an upper shell having a disc insertion/removal opening formed in the main side thereof and a lower shell, butted to each other to define a disc receptacle in which a disc is rotatably held, the lower shell having formed therein a first opening through which a disc held in the disc receptacle is at least partially exposed to output; a middle shell disposed rotatably in the cartridge body to define the bottom of the disc receptacle by the main side thereof, having the main side thereof exposed to outside through the insertion/removal opening in the upper shell, having formed in the main side thereof a second opening corresponding to the first opening in the lower shell of the cartridge body and which is rotatably received in the cartridge body; and a pair of shutter members which uncovers the first and second openings when the middle shell rotates until the first and second openings are aligned with each other.