Printing unit i.e. eight drum, for rotary printing press utilized for printing colored newspaper, has control unit allowing or stopping change of one operating position to other position depending on presence and/or movement of body

摘要

The unit (1) has two frames (13, 14) engaging against each other at a common connecting area (16), in one operating position, and turned from each other, in other operating position. A warning area is provided upstream to a gap formed between the frames, and extends at a longitudinal side of the unit, where a sensor e.g. motion sensor, monitors the warning area. A control unit is connected with the sensor to allow or stop change of one operating position to other operating position depending on presence and/or movement of a body in the warning area with the cooperating frames.