| abstract |
A method for improving the characteristics ofnwetting water in offset printing, comprises at least thensteps of controlling and holding constant in time the pHnvalue of the wetting water and controlling and holdingnconstant in time the value of the wetting water electricnconductivity. n The apparatus for carrying out the methodncomprises, in an operatively and functionally intercouplednrelationship, means for supplying the wetting water, meansnfor filtering the supplied wetting water, designed tonprovide an actively filtered wetting water, magnetic meansnadapted to subject the filtered wetting water to ancontinuous and strong magnetic processing, pH controllingnmeans, adapted to control the wetting water pH at a presetnacid pH value, and means adapted to control the wettingnwater electrical conductivity at a set conductivity value. |