| 摘要 |
In a tape cassette including a cassette shell in which a tape reel having a tape-shaped recording medium wound therearound is accommodated, and a front lid which serves to cover the front surface side of the tape-shaped recording medium exposed to the front face of the cassette shell and is provided to the cassette shell so as to be movable between a lid-closed position at which it covers the front surface side of the tape-shaped recording medium and a lid open position at which the front surface side of the tape-shaped recording medium is opened, the front lid comprises a main portion for covering the front surface side of the tape-shaped recording medium and a side surface portion projecting backward from the side edge of the main portion, and a lid lock member for locking the front lid at the lid-closed position is provided to the inner surface of the side surface portion of the front lid so as to be rotatable inside the side surface portion of the front lid.
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