Patent ID: 7533883

Claim:
A sheet conveyance system for conveying individual sheets on a sheet stack, comprising at least one driven conveying shaft, whose spacing from the sheet stack is variable and that contains at least one sheet conveyor that acts with a friction coating on a sheet to be conveyed, wherein a toothed wheel having outer toothing is fixedly disposed on the conveying shaft, said toothed wheel is enclosed by an outer ring supporting the friction coating, the outer ring having an inner toothing constantly meshes with the outer toothing of the toothed wheel, a partial circle diameter of the toothed wheel is smaller than the inner toothing of the outer ring, a force transferred acts on the outer ring such that the outer ring is placed with a contact force onto on the sheet to be conveyed, and a spacer maintains a fixed spacing between an axis of rotation of the toothed wheel and an axis of rotation of the outer ring, wherein the spacer is disposed inside the outer ring.