Understanding ink flow behavior in offset lithographic printingmachines is essential when optimizing process control, ink and water materialdesign. We have developed an ink flow simulator to predict the ink filmthickness anywhere on the rollers, plate or blanket of the machine and onprinted paper at any time. Ink film thickness is sampled every 1 squaremillimeter of the surface, and calculated with a simple model that represents inktransfer from a rolling surface to another at a specified transfer rate in an actualroller configuration. The results of the simulation showed a strong correlation tothe density measurement of corresponding actual print. Additional factors(degree of ink flow and its direction) were introduced to the model, resulting ina significant improvement in prediction accuracy.
展开▼
