Color by the Numbers

“A lot of it is generic industry process,” explained John Corelli, manager of graphics planning, customer and technical service North America. “The only area that is unique and somewhat proprietary is what we do internally to reduce variation on press.”
According to Corelli, the nature of the process gives rise to a certain amount of distortion in the printing—up to 25 percent ink gain on screen work. Referring to the need for ink curve adjustment, he said, “The desktop operator whose job is to perform the initial prepress separation has to understand how much to reduce a given screen to allow that gain in order to print as it should. You can’t go to press without making those adjustments.”