| 摘要 |
<p>PURPOSE:To prevent the jump-out of a tape cassette, and to improve operating speed by forming a positioning recessed part to be fitted to a tape cassette positioning projection formed on a tape cassette holder on one side surface of the tape cassette, and simultaneously, arranging the positioning recessed part at the same distance from the end of the one side surface of the tape cassette. CONSTITUTION:A second cassette guide groove 48 is formed at the place of size A from the back face of a small tape cassette 1, and the cassette positioning recessed part 49 is formed on the guide groove 48 and in addition at a center in a longitudinal direction. Besides, in a large tape cassette 1 as well, the cassette positioning recessed part 49' is formed similarly on the second cassette guide groove 48' and in addition, at the center in the longitudinal direction. Then, the cassette positioning recessed parts 49, 49' of the large and the small tape cassettes 1, 1' are fitted to the cassette positioning projection 54 formed on the tape cassette holder 51. Thus, even if a rotary storage part rotates at high speed, the jump-out of the large and the small tape cassettes 1, 1' is prevented, and the operating speed is improved.</p> |
