Patent ID: 6739252
Filing Date: 2004-05-25
Classification: B41F

Abstract:
A method for reversing sheet material having edges in a sheet-processing machine having at least two printing units, which comprises:providing a gripper system on a reversing drum associated with at least one of the printing units; providing an impression cylinder operable as a storage drum in a recto/verso mode, the storage drum having a recto printing side and an impression-cylinder-side gripper system, the storage drum and the reversing drum defining a transfer centerline therebetween; and gripping, in the recto/verso mode, one of the edges of the sheet material at an angle before the transfer centerline with a holding and lifting system disposed parallel to the recto printing side of the storage drum before an edge of the sheet material fixed to the storage drum is released by the impression-cylinder-side gripper system.