Abstract: A stand alone printing system (10) for coating a first face of sheets on which printing may be printed previously by a printer not associated with the system includes a feeding mechanism (14), a driven application roller (76) for transferring coating material disposed on the peripheral surface (77) to the first face; a metering device (78) for transferring a uniform thickness of coating material to the peripheral surface of the application roller; a driven impression roller (85) which contacts a second face of the sheets and which contacts the peripheral surface of the application roller at least at gaps disposed between the sheets during feeding of the sheets along the coating zone which transfers the coating material to the peripheral surface (86) of the impression roller; and a coating material removing mechanism (116) for removing coating material from the peripheral surface of the impression roller prior to rotation of the peripheral surface of the impression roller to a point of contact with the second