US Patent 7571677 Printing unit having transfer cylinder with compressible layer

A blanket is located on an outer surface of a roller, such as a printing unit roller. The blanket has an elastic and/or a compressive layer with a surface pressure that depends on the degree of the impression. The layer is selected so that a depending of the surface pressure on the impression has, at least in some areas, a slope of less than 700 (N/cm2)/mm.