Better Press Control with Simulation of Ink and Water Flows

The theoretical background of offset unit simulators has been considered. A press unit simulator taking both ink and water split, emulsification and the formation of free water films and evaporation into account is developed. Adequate parameter values have been searched for by means of a test printing series on the laboratory's TAPA press. The ink and water flows in the unit as well as the density profiles have been studied by simulating and by comparing the measured and simulated results. Farther development of the simulator and new projections are discussed.