| 摘要 |
<p>PURPOSE:To move a reel stand base at high speed by reciprocatively moving the reel stand base, to which cassettes S, M and L with various distances between picthes are fitted, to the position of the S cassette and the position of the L cassette with the position of the M cassette as a center. CONSTITUTION:Before the cassette is inserted, a reel stand base 11 is positioned in the position of an M cassette 27. In such a state, when the S cassette is inserted, the base 11 is moved in a (c) direction by a crank arm 4 and positioned in the position of an S cassette 28 by a stopper 9. After the S cassette is detached, the base 11 is moved in an (e) direction from the position of the S cassette 28 and positioned in the position of the M cassette 27 since operational stoppers 19 and 20 are set in a turning-ON state. Even when an L cassette 26 is inserted, the base is samely positioned. Thus, since the reel stand base is returned to the M cassette position 27 always after the cassette is detached, time for moving the reel stand base is shortened after the cassette is inserted.</p> |
