| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a printed matter in which invisible information whose creation is attained with a general color printer which uses four color toner is superimposed, while carrying secret information which cannot be visually deciphered normally and whose viewing is attained in utilization time with a simple method. <P>SOLUTION: A monochrome image 6 generated from an original image α5 is formed by a yellow color material on paper containing a fluorescence material, and furthermore, a share image A11 formed by a visual sense decoding mold secret dispersion method is superimposed and formed from an original image β14. Under visible light, although the original image α5 and original image β14 are in an invisible condition, if ultraviolet ray 16 is irradiated, fluorescent image 8 will appear and a restoration image 15 can be visible by piling up a share image B12. <P>COPYRIGHT: (C)2012,JPO&INPIT |
