UV printing was almost unheard of until recently. Many printers are now offering UV printing due to its many advantages over traditional (aka: convention) printing.
The printing process is almost exactly the same for both conventional and UV printing; the difference comes in the inks and the drying process associated with those inks.
Conventional offset printing uses solvent inks – which are not the greenest option – because they evaporate into the air, releasing VOC's. They often require additional spray powders to aid in drying. The inks are absorbed into the paper and colors can often become diluted and less bright especially when printing on an uncoated stock. Depending on the papers character and weight, drying can add days to each job. Conventional inks must be absorbed by the substrate they are printed on therefore, you can not use them on materials like plastic, foil, or acrylics.
- Dry over time and with the aid of spray powders
- Release VOC (volatile organic compounds) after they are printed
- Inks absorb into substrate making colors muted
- Stocks are limited to mostly paper
- Inks can rub, smudge, and offset
UV inks dry through a photo mechanical process. The inks are exposed to ultra-violet lights as they are printed, immediately turning from a liquid to a solid with very little evaporation of solvents and almost no absorption of the ink into the paper stock. So you can print on virtually whatever you want when using UV inks! Since they dry immediately and release no VOC's into the environment, UV printing is considered a green technology, safe for the environment and leaving an almost zero carbon footprint. Of course, because UV inks dry on contact, they never smudge. And that means, no matter what type of paper you use, you will never need to add costly coatings to protect against smears and rub-offs.
- Dry immediately by UV lights before they leave the printing press
- Release NO VOC's as they are cured immediately
- Ink sits on top of the substrate giving brighter colors
- Can print on a wide range of stocks including paper, plastic, foil, wood, etc.
- Inks are very durable and will not rub, smudge, or offset
At Miles Printing, we are proud to say that we print UV inks in our offset sheetfed presses, digital presses, and in our large format / signage pressroom.