Electrophotographic digital copier for providing bicolor copies

Details Electrophotographic digital copier for providing bicolor copies Electrophotographic digital copier for providing bicolor copies

1995-06-05

1996-03-19

Wong, Peter S.

Facsimile and static presentation processing

Facsimile

Recording apparatus

355326R, 347232, H04N 129, G03G 1501

Patent

active

055007384

ABSTRACT:
An electrophotographic digital copier for sequentially writing bicolor image data signals onto a photoconductive element and producing a bicolor hard copy by a single image transfer. The copier has a black developing device and a red developing device for developing respectively a latent image electrostatically formed by a black image data signal on a photoconductive element and a latent image electrostatically formed by a red image data signal. A signal detecting device determines whether or not the red image data is present. A control device starts the drive of the red developing device when the signal detecting device detects the red image data signal and ends the drive on upon the elapse of a predetermined period of time after the signal detecting device determines, during the driving of the red developing device that the red image data signal is absent.

REFERENCES:
patent: 5032904 (1991-07-01), Murai et al.
patent: 5162821 (1992-11-01), Fukuchi et al.

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