| 摘要 |
A photostorage and emission material with technology for altering color and methods of formulating luminescent inks for color separation of the artwork and printing full color pictorial images with realistic depth. The resulting full color pictorial images are visible in both conditions of reflected light in daylight as well as similar full color emission light in darkness. When the pictorial images are exposed to a bright light source to achieve complete excitation of the photostorage and emission material, the pictorial images exhibit high initial brightness and long glow duration time in darkness. The photostorage and emission inks are utilized in process color separations for printing pictorial images with standard equipment in the printing industry. The general methods utilized are: 1) mixtures of ink composed of photostorage and emission colorants, and 2) apply separate layers of ink, the first made with photostorage and emission colorants and the second made with emission colorants, and 3) apply a luminescent or photostorage and emission undercoating to the substrate, then transfer and bond a translucent pictorial image on top of the said undercoating to illuminate the printed image in darkness.
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