Compression of Two Rollers in Sheet-Fed Offset Printing Machine

The most important units of sheet-fed offset printing machine, like the ink and dampening systems as well as a printing unit, are composed, in the main, of contacting rollers of various sizes (in case of the printing unit they are named cylinders). Adequate setting of the said rollers is very important, because it has big influence on quality of print-outs. The settings are made experimentally by measuring the width of the contact area in the ink and dampening systems or by computing the clamp parameters – in the printing unit. This paper includes analysis of compression of two rollers depending on a width of the contact area, radiuses of the rollers as well as their Poisson’s ratios and Young’s modules.