| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a color copying-preventive print for surely preventing forgery by a color copying machine by a method wherein a user of securities or the like can easily recognize discrimination between a real thing and a false thing at a glance without requiring a high degree technology, a high priced facility or the like. SOLUTION: In the color copying-preventive print, a color copying-preventive image in which a pattern is formed by thicknening a line width of a part of wavy lines arranged at a specific vertical feed pitch is printed.</p> |
