Patent ID: 7114166

Claim:
A disc cartridge, comprising: a cartridge main body composed of a lower shell, in which a first opening that enables access to a disc is formed, and an upper shell; a disc tray rotatably provided inside the cartridge main body and formed so that the disc can be mounted thereon; and a single shutter member disposed between the lower shell and the disc tray, wherein a second opening, which enables access to the disc when the second opening overlaps the first opening in a thickness direction of the disc cartridge, is formed in the disc tray, the disc tray covering a first part of the first opening in a restricted state where access to the disc is restricted, uncovering the first part of the first opening in a disc access state by rotating inside the cartridge main body, and causing the shutter member to slide, and the shutter member covers a remaining part of the first opening not covered by the disc tray in the restricted state so as to cover the first opening in concert with the disc tray, and in the disc access state the shutter member is caused to slide by the disc tray so as to uncover the remaining part of the first opening.