| 摘要 |
<p>PURPOSE:To suppress the fluctuation in a tape tension surely, by detecting the tape tension with a pressure-sensing element and controlling a pressing force of a pinch roller with this output. CONSTITUTION:The tape tension is detected with a detector 17 comprising the pressure-sensing element and its detected output is amplified and given to a comparator 21. This detected output is compared with the initial set voltage corresponding to an optimum tape tension at the comparator 21 and the rotation of a motor 15 is controlled in response to the result of comparison. The pressing force to the capstan of the pinch roller is controlled with the rotation of the motor 15. Thus, the fluctuation in the tape tension is suppressed surely.</p> |
