| 摘要 |
A cartridge body of a disc cartridge stores an optical disc kept rotatable, and includes a disc inlet/outlet port for taking in and out the optical disc. A lid member is mounted on the cartridge body to be movable between a closed position wherein the lid member closes the disc inlet/outlet port and an opened position wherein the lid member opens the disc inlet/outlet port. The lid member has a through hole extending in a direction perpendicular to the moving direction of the lid member. A detect pin projecting from the cartridge body and is inserted into the through hole of the lid member in the closed position. The detect pin is removable from the cartridge body by opening movement of the lid member so as to indicate that the lid member has been opened.
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