| 摘要 |
<p>PURPOSE:To enhance the visible security of a printing system card still more by simple constitution by further providing a printing layer under a transparent printing layer. CONSTITUTION:A magnetic layer 12 and a printing layer 14 are provided to the upper surface of a base layer 10. The printing layer 18 provided to the upper surface of the printing layer 14 shows the kind of a card and, for example, is printed with the name of a publishing office or the name or pattern of the card. It is necessary to provide this printing layer 18 so as to exert no effect on the printing capacity of the printing layer 14. When forgery printing is further applied on the printing layer 18, the printing layer 18 necessarily generates the situation such that the printing on the printing layer becomes impossible or printing becomes thin at the time of printing applied later because of the presence of the forgery printing layer 20 and it is judged that forgery printing is applied. A numeral 16 shows an overcoat layer and this layer may not necessarily formed.</p> |
