| 摘要 |
<p>A magnetic tape cassette is provided with a reel brake (20) and a tape-protecting lid (17). The tape-protecting lid (17) has side plates (31) extending parallel to the side walls (24b) of the cassette casing (10) and pivoted on the side walls (24b). The reel brake mechanism comprises a brake plate (20) free to move between a braking position and a brake-release position and normally biased toward the braking position. One of the reel brake plate (20) and the side wall (31) of the tape-protecting lid (17) is provided with means for maintaining interengagemant between the reel brake plate (20) and the side wall (31) to as to ensure cooperation therebetween for automatic brake release in reesponse to opening of the tape-protecting lid (17).</p> |
