G - Physics – 03 – G
Patent
G - Physics
03
G
101/40, 314/45
G03G 15/00 (2006.01) G03G 15/23 (2006.01)
Patent
CA 1133576
METHOD AND APPARATUS FOR GENERATING DUPLEX COPIES ELECTROPHOTOGRAPHICALLY FROM SIMPLEX ORIGINALS Abstract of the Disclosure A method and apparatus is disclosed for generating duplex copies from simplex originals. A plurality of origi- nals are sequentially fed through the copying area of an electrophotographic copying machine during a first pass with a predetermined number of copies being electrophotographically made only with respect to each original appearing at an even number in the sequence as fed to the copying area and with the copies being made on one side of separate sheets of copy paper withdrawn fro, a storage receptacle. After collection of the sheets of copy paper from the copying area, these sheets are replaced in the storage receptacle and the plurality of originals again sequentially fed through the copying area of the copying machine during a second pass. During this second pass through the copying area, a predetermined number of electrophotographic copies equal to the number made during the first pass are made with respect to each original appearing at an odd number in the sequence as fed to the copying area with the copies being made on the side of the sheets opposite to that used during first pass copying, these sheets having been previously replaced in the storage receptacle and withdrawn therefrom for a second time during copying. Through proper orientation of the sheets replaced in the storage receptacle, duplex copies are therefore made from adjacent originals in the sequence of originals as fed BO976043 to the copying area during each pass. Provision is also made to either stack the duplex copies or collate the copies into sets. The apparatus includes a logic control system that enables semiautomatic generation of duplex copies to enhance simplicity of copy machine operation without unduly increasing machine costs and the logic control system can be incorporated both into new and existing copy machines.
324198
Clark Gary A.
Queener Carl A.
International Business Machines Corporation
Rosen Arnold
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