The use of ultraviolet light as a source of energy of accelerated dryi
ng of printed matter compared with some of the other various applicati
on processes using this technology. The emphasis is on printing inks a
nd coating varnishes based on the free radical polymerisation mechanis
m. The causes of unsatisfactory drying ore summarised and the use of m
ore reactive prepolymers, reactive diluents and photoinitiators, is pr
esented as a solution to those problems.