| 摘要 |
<p>PURPOSE:To accurately detect a punch hole position perforating position and to certainly prevent forgery by providing a magnetic recording layer and a reflecting layer optically recording data at the perforating position and recording code data showing the punch hole perforating position on both of the magnetic recording layer and the reflecting layer. CONSTITUTION:Punch holes 7 are formed so as to pierce all of a base material 2, a magnetic recording layer 4, a reflecting layer 5 and a protective layer 6. Therefore, even when the punch holes 7 are closed by the single member same to the magnetic recording layer 4 or the single member same to the reflecting layer 5, the punch holes 7 can be detected. Even when the punch holes 7 are closed by the member same to each of recording layers 3, the codes recorded on the respective recording layers 3 must be allowed to coincide and the duplication of a prepaid card becomes difficult. When the codes of different patterns are recorded on the magnetic recording layer 4 and the reflecting layer 5, the punch holes 7 are detected unless the respective codes are respectively allowed to coincide and, therefore, the duplication of the prepaid card 1 becomes further difficult.</p> |
