| 摘要 |
<p>PROBLEM TO BE SOLVED: To make it easy to detect a forged duplication by including a converted binary code and also accidental elements in the recorded print of securities to form individual sets of information on the securities incorporating accidental change data, and collating these individual sets of information on the securities with the accidental change data. SOLUTION: When applying this method for detecting forged securities to a prepaid card 1 for a pachinko machine, individual information 2 is printed for recording on the card 1. In this case, a printable area for the individual information 2 is set, and the individual information 2 and the area 3 are printed in the inks each of which emits light and absorbs at different specific color wave length to record the individual information 2 in a masked state. The individual information 2 is displayed in the continuous train of alphameric symbols and preferably the alphameric symbols are selectively arranged at random. Besides, the individual information 2 is binary coded and is formed of recorded print including accidental elements and also incorporating accidental change data. Thus it is possible to detect forged securities by collating the individual information on each of securities with the accidental change data.</p> |
