Abstract: Apparatus for producing copies having images on both sides thereof. The apparatus includes a movable image transfer member, and image forming station for producing first and second unfixed transferable images on the image transfer member and first and second image transfer stations for transferring the images from the image transfer member to a copy sheet. Located between the first and second image transfer stations are a plurality of vacuum rollers including at least a first roller located adjacent to the image transfer member and a guide member associated with the vacuum rollers, the vacuum rollers and guide member forming a copy sheet inversion path.

Abstract: Apparatus is disclosed for transporting and cutting film in a computer output microfilmer which includes mechanisms for transporting and cutting the film respectively, and circuitry responsive to successive sequences of pulses for controlling such mechanisms. The transport mechanism includes a pair of stepping motors having phase windings responsive to current pulses which drive the film in mutually perpendicular directions respectively. Motor control circuits responsive to the pulses are operative to switch current through these phase windings so that successive columns, each containing a plurality of frames in which images may be recorded, are disposed successively at a film gate. The shaft of the motor which transports the film in the columnar direction has an optical sensor which produces output signals corresponding to the location of the film at a reference position.