| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide constitution of a special image where an image observable under ordinary visible light is changed into a completely different image upon observation under specified conditions, in the field of precious printed matters such as bank notes, passports, securities, identifications, cards and traffic tickets being security printed matters requiring duplication prevention measures and forgery prevention measures, and latent image printed matter formed thereby. <P>SOLUTION: In latent image printed matter, a first image is formed by a brilliant material on a second image formed by permeable ink. The image visually recognized under diffuse reflection light and the one visually recognized under specular reflection light are not completely correlated with each other, and additionally, upon observation with transmitted light, it can visually recognize an image lying in a negative-positive relation with an image visually recognized under specular reflection light. <P>COPYRIGHT: (C)2012,JPO&INPIT |
