Of or relating to the range of radiation wavelengths from approx. 4,000 angstroms, just beyond the violet in the visible spectrum, to approx. 40 angstroms, on the border of the x-ray region.
That part of the electromagnetic spectrum lying beyond the blue end of the visible spectrum; it is the primary cause of pigment failing. Ultra-violet curing: polymerisation effected by the presence of ultra-violet. The drying mechanism of inks designed to cure by ultra-violet irradiation.