SHEETFED DRYING/CURING SYSTEMS -- Running Hot and Cold

Traditional UV inks have a problem wet trapping, so inter-deck UV curing is required after each unit to prevent contamination of the cylinders downstream, explains Dave Douglas, vice president of business development at Printing Research (PRI) in Dallas. "Since hybrid inks can be wet trapped, one UV curing station after the final printing unit is able to cure up to four colors in-line before the sheet enters the coater," he adds.