| 摘要 |
<p>PURPOSE:To simplify the structure by providing a pressure spring between both pinch arm plates interlocked with a cam gear. CONSTITUTION:As a cam gear 78 turns clockwise, a guide pin 77 moves from a G area to an H area. In this state, a magnetic tape 4 abuts on a tape guide 75, and the upper pinch arm plate 70 turns clockwise through the lower pinch arm plate 71 and a pressure spring 72, while being subjected to a control of turning. As the gear 78 turns continuously, the pin 77 moves to an I area, and a pinch roller 74 becomes a second loading state to a capstan shaft 12 by pressing force of the spring 72. In this state, by a rotation of a capstan motor, the capstan shaft is rotated, the magnetic tape is run and the recording/reproducing operation by a rotary head ram is executed.</p> |
