Patent ID: 7478593
Filing Date: 2009-01-20
Classification: B41F,Y02P

Abstract:
1. A method of compensating for register deviations, caused by rotational vibrations, in a sheet-fed rotary printing press with a driving gear train (ARZ), connecting a sheet-feeding apparatus (AN) and printing units and/or coating units (DW), and a main drive motor (M), acting on the driving gear train, to which a drive control system (A) is assigned, with the following steps: performing a one-time determination of rotational vibrations (S) in the driving gear train (ARZ) and of assigned register deviations at the printing and coating units only in the resonance regions of the rotational speed (n ascertaining discrete harmonic portions of the rotational vibrations (S) determined for the resonance ranges of the rotational speed (n ascertaining parameters for oppositely directed harmonic compensation moments (M storing the parameters of the compensation moments (M superimposing the stored compensation moments (M