Automatic duplex electrophotographic copying machine

Details Automatic duplex electrophotographic copying machine Automatic duplex electrophotographic copying machine

1985-12-27

1987-04-07

Grimley, Arthur T.

Photocopying

Projection printing and copying cameras

Combined with or convertible to a contact printer

355 14SH, G03G 1500

Patent

active

046555820

ABSTRACT:
An automatic duplex electrophotographic copying machine having a single side copying-related transport passage communicating from a paper supply section through a copying process section to a discharge outlet, a duplex copying-related transport passage located under the single side copying-related transport passage and communicating from the vicinity of the discharge outlet to the vicinity of the paper supply section, an intermediate tray provided in the approximate center of the duplex copying-related transport passage, and a plurality of bins mounted at the discharge outlet to store discharged copy papers, comprises a detector provided at the paper supplying side of the intermediate tray of the duplex copying-related transport passage to detect the picture image density on a copy paper; and a storage bin selection unit for delivering a defective copy paper to a particular bin among the plurality of bins when the detector does not detect any picture image on the copy paper while the copy paper is passing the position of the detector.

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