Method for reducing the changeover time by automatic printing plate change

摘要

For the exchange of printing plates at a rotary printing press, with a series of printing station groups (6-9;11-14), each station has a printing plate change unit with operating modes for printing the upper side of the paper and both the upper and lower sides. A change unit (10) is between the groups of printing stations. The printing cylinders (2,3) of the second group of printing stations, after the change unit, are positioned by a reference format unit (21), at the machine control (20), to give a printing plate exchange in parallel at both groups of printing stations in pairs of plates each from one of the two groups. The reference format unit gives a setting angle corresponding to a phase difference.