Technique for Measuring High-speed Ink Film Transfer.

Average hand-proofing speeds are in the order of 200 ft. - 300 ft. per minute. Press speeds will be five times as fast. The problem is whether ink transfer data obtained on a proof press are representative of that obtained at conventional printing speeds. A method for measuring ink transfer is described and results listed for press speeds from 50 ft. - 1,200 ft. per minute.