METHOD SYSTEM AND ROTARY PRESS BY MEANS OF WHICH OR FROM WHICH A PRINTED IMAGE IS MONITORED

摘要

The invention relates to a method for monitoring a printed image produced by a press, comprising the scanning of printed regions of the printed material (9) within a scanning region (1) by means of a sensor system (5) and subjecting at least partial areas of the scanning region (1) with first electromagnetic radiation (2) from an illumination element (4, 12) wherein the electromagnetic radiation (2) is homogeneous. It is novel that a transparent printing material (9) is used and the first electromagnetic radiation (2) is deflected onto the scanning region (1) from the side of the printing material (9) away from the sensor system (5).