| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a card, to which highly antifalsifying properties are given by employing metal nano particles grown at randam on a substrate, its manufacturing method and an authentication identifying method using the antifalsification card. <P>SOLUTION: In this antifalsification card, a substrate (a chip) with a pattern made of metal nano particles is incorporated. In order to identify this antifalsification card, the substrate (the chip) portion with the pattern made of the metal nano particles of the antifalsification card is identified with an optical laser or a magnetic head. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
