There are now over 400 installations running using a UV drying process in Europe at present, and world wide the total figures must now run to several thousand. The demand on the equipment manufacturer for higher efficiency, and an ever widening field of applications effecting the size and shape of the equipment, has tested the suppliers ability to meet the rapidly expanding and changing requirments. Lamp development has largely been in the area of higher power from the same lamp size. However, there are problems of additional excessive heat and shortened lamp life and a balance has to be struck between these conflicting functions.