| 摘要 |
<p>The present invention aims to prevent damages of a magnetic tape in a magnetic tape cassette adapted to be operated in a recording and reproducing apparatus which can similarly operate a plurality of magnetic tape cassettes. More specifically, in the invention, differences (A1 - B1, A2 - B2) between heights A1, A2 of radially inner portions (32a), (42a) of lower flanges (32), (42) and heights B1, B2 of ribs (35a), (45a) of lower halves (35), (45) for restricting a height of the magnetic tape are equal (A1 - B1 = A2 - B2) in a plurality of the magnetic tape cassettes which have the same vertical sizes and different sizes in a horizontal direction. <IMAGE></p> |
