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Dampening device adjusting method for offset printing machine, involves adjusting contact pressure of one of immersed roller and dosing roller and/or offsetting of one roller relative to other roller by motor
Dampening device adjusting method for offset printing machine, involves adjusting contact pressure of one of immersed roller and dosing roller and/or offsetting of one roller relative to other roller by motor
The method involves providing an immersed roller, and a dosing roller resting on the immersed roller. A contact pressure of one of the immersed roller and dosing roller and/or offsetting of one roller relative to the other roller is adjusted by a motor based on measurement of a dot gain over printing width and/or measurement of color density within a side edge-near region and/or change of width of print format and/or width of a subject. Color solution conveying amount of a dampening device (6) is reduced until the dot gain increases in a print sheet-measuring field.
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