| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a forgery prevention medium having a printing and birefringent pattern in which high latent image visibility and durability are obtained. <P>SOLUTION: A forgery prevention medium includes a support body, patterning optical anisotropy layers having two or more regions different in birefringence and a printing layer in this order, and a laminated film having a retardation of 50 nm or less is stuck on the printing layer. <P>COPYRIGHT: (C)2012,JPO&INPIT |
