Abstract: A process for producing an electrostatographic image wherein a uniformly charged photoconductive plate is exposed to a pattern of light and shadow to produce an electrostatic latent image, the continuous zones of the photoconductive plate which do not receive sufficient light during the exposure to discharge the plate are subsequently discharged and thereafter the charged areas of the plate are developed to provide a developed electrostatograpic image.

Abstract: A sheet stripping apparatus for an electrostatographic copying machine for separating copy sheets from the copying machine photoreceptor following image transfer. The stripping apparatus as aforesaid consists of one or more disc like elements, supported for rotation upon an arm such that the arcuate edge of the disc is in stripping contact with the photoreceptor surface downstream of the transfer station. In one embodiment, control means are provided to bring the stripping disc or discs into and out of contact with the photoreceptor in timed relationship to movement of the copy sheet. In another embodiment, means are provided to turn the disc, either continuously or by increments, so as to present fresh disc surface and avoid flats.

Abstract: A carriage drive apparatus comprising a carriage, a drive mechanism to drive the carriage in one direction, a shaft rotatable at a constant speed, an overrunning clutch mounted on the shaft, and at least one lever connecting the clutch and the carriage, the lever pivoting about the shaft. The arrangement is such that on movement of the carriage in the one direction, the lever is moved, but is prevented from rotating about the shaft at greater than the given speed by the overrunning clutch. A plurality of levers may be employed. The apparatus is particularly useful for providing controlled deceleration during the return scan of a scanning lamp carriage of a reproducing machine.

Abstract: Apparatus for forming electrostatographic reproductions back-to-back on suitable support surfaces including first and second photoconductive imaging surfaces and means to provide a developed image on each photoconductive surface and provide simultaneous transfer of the developed images from the photoconductive surfaces onto both of the support surfaces.