| 摘要 |
PURPOSE:To easily transfer a magnetic head to the reference track position and to realize the fine adjustment of positioning, by releasing the belt by eccentric cam. CONSTITUTION:A steel belt 18 is rolled on a pulley 11 of a stepping motor 10 being fixed by fixing plate 19 and screw 20. One edge of the belt 18 is fixed by the screw 22 through a spring part material 21, and the other edge is fixed by the screw 23 to a slider 27 which is composed of the resin having concave part 24, convex part 25 and concave part 26. An eccentric cam lever 18 is provided on the upper part of the concave part 26 so that it can slightly release the belt 18. When the lever 28 is rotated to the arrow direction a with the supporting axis as the center, the belt 18 is released towards the arrow direction b, and a magnetic head 30 moves to the arrow direction c. Thus the fine adjustment of the magnetic head to the reference track position is made possible. |
