Cures for Wider Webs?

Mitchell suggests paying particular attention to energy production of UV lamps in wider web applications. “As lamps age, their energy output can diminish and curing is therefore reduced,” he explains, advising regular use of a measuring device and careful recording of bulb changes.

Wenger underscores issues that may crop up for mid- to wide-web CI presses, where space limitations may require press manufacturers to alter the print-unit configuration to accept the UV unit(s). He also notes “thermal impact on the central impression (CI) cylinder can negatively impact on registration, curl, and tension,” adding that UV system manufacturers have developed “sophisticated heat management systems” that mitigate this effect.