Patent ID: 7004069
Filing Date: 2006-02-28
Classification: B41F

Abstract:
1. A rotary printing press comprising a plurality of printing units for operation with part width printing material, each said unit comprising: an inking unit having at least one roll having non-printing regions, said inking unit including a rider roll, a transfer roll, and a doctor unit which can be thrown off and on said non-printing regions of said rider roll so that a mixture of printing ink and protective medium can be removed as required from said non-printing regions of said rider roll; a damping unit having at least one roll having non-printing regions; a forme cylinder having non-printing regions; a transfer cylinder having non-printing regions; a source of protective medium having a viscosity of 300 to 400 dPa*s; and at least one metering nozzle arranged to apply said protective medium in a finely distributed manner to at least one of said non-printing regions by means of compressed air, thereby forming a thin-layer protective film on said at least one of said non-printing regions.