| 摘要 |
<p>PURPOSE:To surely detect all tape sticking accidents irrespective of a place where dewing is generated by providing revolution speed comparing means and monitoring the speed of revolution of a tape supply reel. CONSTITUTION:At the time of tape loading, when a tape 5 sticks to a drum 6 due to dewing, etc., the tape 5 is drawn out in greater quantities than a normal time because of the drum 6 which is rotating at a high speed. By detecting a drawing-out speed of the tape 5, that is, the speed of revolution N of a tape supply reel 2 of a cassette half 1 and monitoring whether it is larger than the speed of revolution N0 at the time of normal tape loading which is set in advance or not, a sticking accident of the tape 5 can be detected. In such a way, all tape sticking accidents at the time of tape loading can be detected surely irrespective of a place where dewing is generated.</p> |
