"It's the inks." "No, it's the equipment." "No, it's the inks." "No, it's the equipment." Diagnosing a UV curing problem can create a heated volley of probable causes. According to Jim Flynn, product manager, UV curing, Hanovia, initial detection of the problem is the easy part. "The usual sign that there is trouble brewing is when the UV system stops curing or you have to slow down to get a proper cure," he states. Then the going can get dicey, even with the help of radiometers, power pack current meters, and1 other indicators. "Distinguishing definitively between a lamp and ink problem is difficult. Both can give you the same symptoms," states Pete Kershner, new business development manager, EYE Ultraviolet. Flynn adds that the root of the malfunction can be clouded by unaccounted-for factors such as heavier coatings, or production errors such as increasing press speeds without boosting lamp power.
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