Abstract: A sheet handling mechanism for use in a duplicating machine for duplicating images on both sides of copy sheets including a first printing couple, having an impression cylinder, for transferring a first image to a first side of a copy sheet and a second printing couple for transferring a second image to a second side of the sheet. Mechanism directs each sheet issuing from the impression cylinder in a path away from the first printing couple. Mechanism engages a lead end of each sheet issuing from the directing mechanism and diverts each sheet generally transversely out of the path toward a reversing station. Re-feeding mechanism at the reversing station engages the lead end of the sheet and re-feeds the sheet, trail end first, back into the path whereby the trail end becomes a new lead end of the sheet. Transport mechanism engages the new lead end and transports the sheet toward the second printing couple.