The Optimal Analysis of the Cylinder Packing in the Offset Press

The problem of logically selecting cylinder packing for an offset press has been explored. First, after analyzing two experiments, the authors have pointed out the difference between these experiments and the practical printing process. Then, based on the analysis of sliding between the contacting areas of cylinders, with minimum sliding as the objective, an analysis was made of the diameters of the plate cylinder and the blanket cylinder. The calculated result shows that, for the best performance, the thickness of the packing should result in the diameter of the blanket cylinder being a little larger than that of the plate cylinder. A formula for the ratio of the compression of the packing has also been given.