Fluorescent ink is one of the more widely used inks in ticket printing, and its main component is fluorescent pigment. Fluorescent pigments are functional luminescent pigments. The difference from ordinary pigments is that when external light (including ultraviolet light) is irradiated, it can absorb a certain form of energy, and excite photons to release the absorbed energy in low visible form, thus producing different Fluorescence of the hue. The combination of different color lights forms an unusually bright color, and when the light stops emitting, the luminescence phenomenon disappears, so it is called a fluorescent pigment. The fluorescent pigment is mixed with the polymer resin binder, the solvent and the auxiliary agent, and the fluorescent ink can be obtained by grinding. This ink, which is invisible to the naked eye, only emits light under ultraviolet or infrared light. It is due to its convertible and hidden features and its inability to be accurately reproduced on a color copier. This ink is used in the specialty printing industry. The application is more popular.
A special ink that emits visible light (400-800 nm) by ultraviolet light (200-400 nm) and is called an ultraviolet fluorescent ink. According to the excitation wavelength, it is divided into short wave and long wave. The short-wavelength ultraviolet fluorescent ink with excitation wavelength of 254nm is called long-wave ultraviolet fluorescent ink with excitation wavelength of 365nm. It is divided into three kinds of colorless, colored and discolored according to the color change. The colorless can display red, yellow and green. Blue and other colors; colored to brighten the original color; discoloration can change one color to another.
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