UV inks do not dry in the air so they do not tend to plug the cells. There in no component that evaporates so there is no

need for clean-ups between press runs. The press could even be left over the weekend without cleaning and be ready to

go on Monday!
.
UV inks act like liquid plastic. As the ink is exposed to concentrated UV radiation, a chemical reaction takes place

during which the photo-initiators cause the ink components to cross-link into a solid. No material is removed so nearly

100% of the delivered volume is used to provide coloration. Assuming all of the ink transferred from the cells to the

substrate, to attain the color density previously attained with water based ink, the anilox roll would have to be specified

to delivered about 35% less ink to the substrate. Of course, viscosity will play a key role in determining the percentage

of ink to transfer (transfer factor)..