Method for regulating inking when printing with a printing press

Details Method for regulating inking when printing with a printing press Method for regulating inking when printing with a printing press

1996-09-13

1998-09-08

Fisher, J. Reed

Printing

Processes

Condition responsive

101485, 101365, B41F 3104, B41F 3106

Patent

active

058029788

ABSTRACT:
A method for regulating inking when printing with a printing press, which includes, by means of at least one sensor element directed towards the surface of a recording carrier at a given measurement site, deriving actual-value signals from at least one physical variable representing the inking; comparing the actual value signals with reference-value signals for the physical variable at the same measurement site; deriving, in accordance with a prescribed principle, control signals for control elements for the physical variable from the comparison-value signals obtained, and feeding the derived control signals to a control element; and placing the actual value in a range of reference values by means of the control element and holding it there automatically; further includes acting upon the control elements with defined control signals during a startup phase of the printing press; obtaining actual-value signals from a multiplicity of measurement sites in the entire printed surface of the recording carrier; determining, for each physical variable to be controlled and for each measurement site, changes in the actual-value signals with respect to the control signals to be defined; selecting measurement sites wherein the changes occur most markedly; and regulating the physical variables exclusively at the selected measurement sites, in a production-run phase of the printing press.

REFERENCES:
patent: 5258925 (1993-11-01), Maier et al.

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