| 摘要 |
PURPOSE:To stabilize the contact between a flexible medium and head, lighten the head load, and increase the allowable accuracy, by inclining the contact surface of the head holding the flexible medium against the rotating surface of the flexible medium. CONSTITUTION:A flexible medium 1 moves under a condition where the medium 1 is held between a lower head 4 and upper head 5. The head sliding surfaces of the lower and upper heads 4 and 5 have an angle theta against the medium rotating surface. A trend that a slack is produced in the flexible medium at the entrance to the head and projected deformation occurs on the head surface by means of frictional resistance, when the flexible medium 1 is slid along the surface of the lower head 4, is usually seen, but, in such case, the flexible medium is stably contacted with the head, since the sliding surfaces of the heads have an angle against the rotating surface of the flexible medium 1 and the sliding surfaces of the heads follow the deformation of the medium. In addition, the head load can be lightened and the allowable accuracy in position between the medium and head can be increased. |
