Patent ID: 7449108
Filing Date: 2008-11-11
Classification: B01J,B41N

Abstract:
1. An apparatus for improving properties of wetting water in offset printing, said apparatus comprising, functionally interconnected to one another, supplying means for supplying wetting waterr filtering means for filtering said supplied wetting water, adapted to provide an actively filtered wetting water, magnetic means for subjecting said filtering wetting water to a continuous magnetic processing, pH control and holding means adapted to control and hold a wetting water pH at a preseL acid pH value, and electric conductivity control and holding means for controlling an electric conductivity of said wetting water, adapted to hold said wetting water conductivity to a target preset conductivity value, wherein said pH control means and electrical conductivity control means operate in an automatic fully independent manner, thereby said apparatus carries out said offset printing without using isopropyl alcohol.