Method and apparatus for producing multiple sets of copies of a document

Claim 1

In apparatus for producing sets of copies of a multi-page document comprising a plurality of sheets having pages to be copied arranged in a predetermined page sequential order, the apparatus including a photoconductor for receiving a latent image of a page of the document, means for developing such an image, means for transferring a developed image to a copy sheet, and means for fixinig the image on the copy sheet, the improvement comprising: a recirculating feeder for presenting the pages of the document sheets seriatim a plurality of times at a position for copying; means for reflecting light rays off of a page of the document at the copying position once each time the page is presented for copying; an optical system comprising a beam splitter, a mirror and a pair of lenses, the beam splitter being located relative to the lenses and the mirror to (1) reflect some of the rays of light from a page at the copying position to a first one of the lenses and (2) transmit other rays of light from a page at the copying position to the mirror for reflection by such mirror to a second one of the lenses, the optical system being located with respect to the copying position and the photoconductor to form a plurality of duplicate latent images adjacent each other on the photoconductor each time a page of a document sheet is illuminated at the copying position so that the photoconductor receives a plurality of images of one page of the document followed by a plurality of images of another page of the document until all pages of the document are copied; and means for collecting copy sheets containing images of pages of the document, the collecting means comprising a plurality of stations and means for directing copy sheets containing duplicate images to different stations.