Patent ID: 6894872

Claim:
A disk cartridge comprising: a medium; a pair of shells each having an access opening through which the medium can be accessed, and the pair of shells have substantially the same structure, and due to the pair of shells being superposed, a cartridge main body, which can accommodate the medium in an interior of the cartridge main body, is formed; and a pair of shutter members mounted correspondingly to the pair of shells, and able to independently move between an open position for opening the access openings and a closed position for closing the access openings, the pair of shutter members each having a shutter operation portion for externally operating the shutter member to move to the open position, wherein the shutter operation portion of each shutter member is positioned such that the shutter operation portion does not obstruct access to the medium via the access opening, whether the shutter member is positioned at the closed position or at the open position.