| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a forgery preventive medium more difficult to forge and easy to discriminate visually whether the medium is forged one or not, even in the forgery preventive medium using a polarized light latent image. <P>SOLUTION: A forgery preventive medium 10 is composed by laminating, on a base material 11, a forming layer 12 having an irregular structure on a surface, a reflection layer 13, orientation control layers 21, 22 for orienting liquid crystals, a liquid crystal layer 14 having a portion different in a thickness by burying the irregularities and oriented along a prescribed direction by an effect of the orientation control layers 21, 22, and a protection layer 15 in this order. <P>COPYRIGHT: (C)2013,JPO&INPIT |
