| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide printed matter having a latent image given as an object for preventing of forges and duplications in bank notes, passports, securities, commodity tags, various certificates, or the like. <P>SOLUTION: The printed matter is prepared by: laminating a concealment layer which suppresses the permeability of base materials on a base material which has permeable materials; forming thereon, an image forming layer using halftone dots of a first region by colored material, a second region having hollowed color materials or the color materials of high permeability, or a third region having and infrared absorption pigments. The printed matter has: visible images of continuous gradation which make the first region the core; a first latent image which can be confirmed visually when checking the base material under infrared light source by the second region; and a second latent image which can be confirmed visually when checking under an infrared light source by the third region. <P>COPYRIGHT: (C)2012,JPO&INPIT |
