| 摘要 |
A tape cassette comprising a tape reel around which a tape-shaped recording medium is wound, a cassette shell in which the tape-shaped recording medium is accommodated, a mouth portion which is opened forwardly, upwardly and downwardly at the front portion of the cassette shell, a part of the tape-shaped recording medium being disposed so as to traverse the front end of said mouth portion, and a front lid which covers the front side of the tape-shaped recording medium and is moved backward when the lid is opened to made the front side of the tape-shaped recording medium open, thereby making the upper side of the mouth portion open.
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