| 摘要 |
PROBLEM TO BE SOLVED: To provide a printed matter with forgery preventing effect capable of easily identifying and discriminating a color copied forgery from an original only by a visual observation without depending upon an instrument or a specific illumination by an economic cost. SOLUTION: The printed matter 1 is formed by printing a specific pattern 2 and a copy restraining pattern 4 of a latent stage on the same surface by using specific colors. The color restraining pattern 4 under optimum copying condition for faithfully reproducing the specific color of the specific pattern by a color copier is easily visualized, and on the contrary, the faithful color reproducing of the specific color of the specific pattern is impossible under the copying condition for scarcely visualizing the pattern 4, and the specific colors are shared for the same hue component. |
