| 摘要 |
<p>PURPOSE:To widen the tape winding angle to a capstan, by supporting rotatably an arm with one end connected to a pinch roller and the other end connected to a switching arm, to a sliding plate which is energized to slide toward the capstan shaft. CONSTITUTION:A switch lever 16 is actuated by a solenoid, etc., and a sliding plate 20 is driven by the force of the springs 24 and 25 with a contact secured between an arm 14 and a control pin 18. Thus a pinch roller 2 is pressed to a capstan shaft 1. When the shaft 1 reverses, the lever 16 is actuated after moving back the plate 20. Then the arm 14 is made to touch a control pin 19. Under such conditions, plate 20 is advanced by the force of the springs 24 and 25. As a result, the roller 2 is displaced up to the position shown by a 2-dot chain line to be press-contacted to the shaft 1. Thus the roller 2 is displaced to the downstream side of the tape travelling direction by an equal extent in the forward and backward rotation of the shaft 1. As a result, the winding angle is widen to the shaft 1.</p> |
