| 摘要 |
PROBLEM TO BE SOLVED: To provide a special latent image pattern form applied to a bank note, a passport, securities, a commodity tag, and various certificates, etc., for forgery and copy prevention.SOLUTION: In a special latent image pattern form, a first pattern in which a plurality of first elements having an uneven shape are arranged is formed in at least a partial area on a substrate, and an intaglio image line as a second element is printed on the first pattern to provide a height level difference in the unevenness of the first element. Accordingly, the following expression is provided. By changing an observation angle, a latent image may be visually recognized, and the pattern may be observed under transmissive light. The expression is Z<X≤Y<W. |
