| 摘要 |
<p>PROBLEM TO BE SOLVED: To realize a new system, that means, a recopying prevention system by which the labor and time required for certifying a transcript is eliminated and the certified transcript and can be discriminated from a copy thereof (recopy) and a paper used for executing this system. SOLUTION: The original paper A is obtained by forming a latent image warning pattern 1 meaning that it is the copy at the upper part and executing printing 2 for certifying that the paper is the original paper at the lower part. The copying paper B is obtained by executing printing 3 for certifying that it is not a formal copy at a position being one line under the position where the printing 2 for certifying that the paper is the original paper A is executed and forming a latent image warning pattern 4 meaning that the copy is not the formal copy at the upper part than the position where the printing 2 is executed. Then, two papers A and B are used as a set.</p> |
