| 摘要 |
An optical disk cartridge includes a casing having a pair of walls for accommodating an optical disk therein. In the optical disk cartridge, the walls of the casing are formed with clamping windows for clamping the disk at the central portions thereof, and are formed with reading and writing windows for reading information from the disk and writing information on the disk from the clamping windows to side edges of the casing. A shutter capable of opening and closing the clamping windows and the reading and writing windows is slidably provided. The horizontal size of the clamping windows along a sliding direction of the shutter is formed shorter than the vertical size thereof orthogonal to the sliding direction of the shutter.
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