Method and device for controlling the register settings of a printing press

A device for controlling register settings of a printing press, said device comprising:

• a first print unit and a second print unit, located downstream of the first print unit in a movement direction of the print medium, which each respectively include an imaging cylinder rotating with a rotational speed for printing images on the print medium, wherein the imaging cylinder of the second print unit includes register settings that are changeable to avoid misalignment of the images printed on the print medium by the first and second print units;
• a control unit adapted to determine a length of a section of the print medium between the first and second print units;
• a sensor coupled to each of the first and second print units, wherein each sensor is adapted to detect a marking on the print medium, generate a corresponding signal, and transmit the signal to the control unit;
• and
• a drive system that is adapted to change the register settings of the imaging cylinder of the second print unit based on the length of the section of the print medium.