UV inks are special inks mainly used in the screen printing industry, they will not dry unless exposed to the appropriate intensity of ultraviolet light (UV) for the appropriate time. There are both advantages and disadvantages to using UV inks. One advantage is that UV inks do not use potentially hazardous solvents that need to evaporate to cure. On the contrary, when UV ink is exposed to strong ultraviolet rays, a chemical reaction occurs to cure the ink. At present, UV ink is not easy to use at home.
Print on light-colored substrates such as paper or cloth with UV ink. Usually, this is done by screen printing, although there are some special inkjet printers with UV ink cartridges.
Expose the UV ink to strong ultraviolet light for one to three seconds. Lighter inks will cure for one second with UV light, while darker inks will take three seconds to cure.
After one to three seconds, remove the material printed with UV ink from the UV light source. Too much exposure can cause the ink to dry too much, causing it to flake off from the printed substrate.
Handle objects printed with UV ink with care, as the ink is thinner than conventional inks and can be damaged by abrasion or prolonged exposure to sunlight.

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UV ink cannot print on dark surfaces.
UV ink will fade quickly when exposed to sunlight for a long time.
