| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a stable magnetic reproducing signal irrespective of the thickness or hardness of a film. SOLUTION: This device is provided with feed rollers 4a and 4b for feeding a film 1, a magnetic head 5 for reading magnetic information from the magnetic recording part of a film 1 during feeding by the feed rollers 4a and 4b, a plurality of pressing rollers 6a, 6b and 6c provided in positions opposite the magnetic head 5 and the feed rollers 4a and 4b, a linear guide 9 and a press 7 for pressing the pressing rollers 6a, 6b and 6c to the film 1 and tightly fixing the film to the magnetic head 5 and the feed rollers 4a and 4b, a pressure sensor 8 for detecting a tight fixing state between the film 5 and the magnetic head 5 and a control circuit 10 for controlling the pressing operation of a pressing means such as the linear guide 9 according to the output of the pressure sensor 8. In this case, during reading of magnetic information from a magnetic storage part on the film 1, the pressing force of the pressing means is controlled so as to make an output from the pressure sensor 8 constant.</p> |
