| 摘要 |
A tape cassette accommodating a magnetic tape therein includes a cassette body having a front opening across which a run of the tape is guided, an outer lid pivotally mounted on said cassette body for movements between opened and closed positions in respect to the front opening of the cassette body, a first inner lid disposed between the outer lid and the cassette body and pivoted in respect to the latter upon movement of the outer lid between its opened and closed positions, a second inner lid mounted either slidably or pivotally on the first inner lid for movement relative to the latter between an extended position and a retracted position, a driving mechanism for displacing the second inner lid to its extended and retracted positions relative to the first inner lid in response to movements of the outer lid to its closed and opened positions, respectively.
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