Glitter, pearlescent, fluorescent, thermochromic—even the names of specialty inks raise the specter of something exciting.

By Tom Polischuk

Lorenz points out a variety of fluorescent inks that can be used to provide security features, or simply enhance graphic appeal. Colored fluorescent inks are visible in normal light, but provide a fluorescent glow under UV light. Invisible fluorescent inks are virtually invisible in normal light, but radiate fluorescent shades with exposure to UV light.