Rotary printing machine, has mechanism with comparing device comparing signal delivered by sensor with desired value, where comparing device influences on operation of machine and/or delivers reference signal depending on comparison

摘要

The machine has a plate cylinder (1), and a printing plate presence recognition mechanism for recognition of presence of a printing plate (3) on the plate cylinder. The mechanism has a contactlessly working sensor (4) arranged at the plate cylinder. The mechanism has a comparing device that compares a signal delivered by the sensor with a desired value or with a desired value range. The comparing device has an influence on operation of the machine and/or delivers a reference signal depending on the comparison.