| 摘要 |
<p>A method is provided for creation of a substrate fluorescence mask having background color(s), UV mark color(s), and distraction color(s), to b e printed as an image on a substrate containing optical brightening agents. Th e method includes selecting one or more UV mark colors for the mask such that the UV mark colors exhibit low contrast against the background color(s) unde r normal illumination and high contrast against the background color(s) under UV illumination. One or more distraction colors are also selected, such that th e distraction color(s) exhibit low contrast against the background color(s) under UV illumination and exhibit high contrast against the background color(s) under normal illumination. A distraction pattern, formed from one or more distraction colors, is also selected.</p> |
