Method on a multi-colour printing machine operating by the halftone process to achieve a preselected printing result

摘要

The invention relates to a method on a multi-colour printing machine operating by the halftone process to achieve a preselected printing result on a printing carrier. Measurement values in the form of full-tone densities and/or halftone densities are gained from measurement zones printed on the printing carrier and deviations of momentary printing results from the preselected printing result are determined from the measurment values. In order to adapt the momentary printing result to the preselected printing result as quickly as possible, if required, the supply of the printing inks at least to selected inking zones of the printing carrier is firstly changed for a limited period to a greater extent than corresponds to the deviations determined and only after this period is set to correspond to the deviations.