| 摘要 |
PROBLEM TO BE SOLVED: To provide a counterfeit prevention document having high effect for preventing counterfeit, and capable of being preferably used for valuable paper or the like.SOLUTION: A front side latent image 11 is printed on a surface of a sheet base material 2 by a fluorescent ink, and a rear side image 12 is printed on a rear surface by a screening ink. Therefore, authenticity is determined by reading first information 17 of the front side latent image 11 by radiating electromagnetic wave light from the surface side, and by reading second information 18 of the rear side image 12 from the surface side by radiating electromagnetic wave light from the rear surface side. Because an authenticity determination method in which the electromagnetic wave light is radiated from the rear surface side to view the rear side image 18 is viewed from the surface side, which is different from a conventional method, is used, the authenticity determination method is hardly noticed and a counterfeit prevention document 1 of the invention cannot be copied (forged) completely. Accordingly, the counterfeit prevention document 1 has high counterfeit prevention effect. |
