Fluorescent and phosphorescent printing processes

Phosphorescence and fluorescence printing are currently produced using two processes. One is to use light powder as a coating material and produce phosphorescent and fluorescent papers before ink printing. The other is the direct printing of light powder made into ink. There are two methods for preparing the ink: one is to add the binder and the solvent in the light powder, and the ink is made after the ball is ground. The other is a phosphorescent liquid that is directly synthesized as a five-color transparent, and is naturally dried or cured by UV light after printing. It should be particularly pointed out that phosphorescent and fluorescent inks should be on the top layer of the print, that is, the last layer of the print, to prevent the general ink color from covering the phosphor color. Because the phosphorescent color is printed on other ink colors, black, deep purple and other colors will absorb phosphorescence, so that the luminous intensity decreases; white and light colors can improve the luminous brightness. Therefore, try to use light, light tone or reduce the printing level.
Source: China Screen Printing and Imaging Association