| 摘要 |
PURPOSE:To keep continuously the head touch in an excellent state by moving a stabilizing plate in response to a head output. CONSTITUTION:A signal read from a magnetic sheet 11 by a head 12 is proccessed by an envelope detecting circuit 16 and an integration circuit 17 and written in the 1st memory 18. An output of the head 12 being the storage content in the memory 18 and a reference output of the 2nd memory 19 are processed by a comparator circuit 20, the movement of the stabilizing plates 3, 4 opposed to each other while clipping the sheet 11 in the direction of the sheet 11 is controlled by a direction deciding circuit 21 and a stabilizing driving circuit 22 or the like responding to the compared output. Further, the air flow is stabilized, the head 12 is touched onto the sheet in excellent way at all times and an excellent reproducing output level is maintained. |
