| 摘要 |
PURPOSE:To erase recorded information just after reproducing, by bringing a recording face into contact with an erasing magnet while a magnetic tape is reproduced and is taken up with a reel. CONSTITUTION:While a tape 2 is supplied from a reel 1 and is wound up around a reel 7, recorded information is reproduced by a head 9, and the tape 2 is brought into contact with a magnet 10 to erase recorded information, and thus, information is reproduced only once. Thus, this method is suitable for information such as secret information which should not be reproduced plural times. |
