Printing plate dampening method for offset rotary printing press, involves actuating roller such that peripheral speed of roller deviates from peripheral speed of plate, where value of deviation differs from printing unit to printing unit

摘要

The method involves carrying a damping medium (31) by a damping roller (34) to each of the printing units in a printing plate (6) and actuating the roller. The roller is actuated in such a manner that peripheral speed of the roller deviates from the peripheral speed of the plate that supports a plate cylinder (1), where the value of the deviation differs from one printing unit to the other printing unit.