| 摘要 |
A tape cassette capable of preventing detachment of a lid structure from a casing and reducing a manufacturing cost thereof while being simplified in structure. A lid structure including a front lid, an upper lid and a rear lid is arranged in a manner to open and close with respect to a casing including an upper casing member and a lower casing member. The rear lid is provided on opposite sides thereof with a pair of guide pins, which are movably fitted in guide grooves of the lower casing member, respectively. The rear lid is formed with projections, which are abutted against an upper end of the front lid when the rear lid upwardly opens in association with the front lid, resulting in disengagement of the guide pins from the guide grooves being prevented.
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