Electrophotographic copying process for producing a plurality of

Details Electrophotographic copying process for producing a plurality of Electrophotographic copying process for producing a plurality of

1981-11-09

1984-04-10

Welsh, John D.

Radiation imagery chemistry: process, composition, or product th

Electric or magnetic imagery, e.g., xerography,...

Charging simultaneous with imaging

430126, 430 57, 355 3CH, G03G 1322

Patent

active

044421915

ABSTRACT:
An electrophotographic copying process utilizes a photosensitive member for electrophotography which comprises a first and a second photoconductive layer which are sensitive to radiation of a first and a second wavelength region, respectively. The photosensitive member may be subjected to steps of imagewise irradiation simultaneously with charging, then inverse charging, then uniform exposure and the like to form a positive or a negative electrostatic latent image. The electrostatic latent image thus formed is repeatedly subjected to a developing and a transfer step to produce a number of copies.

REFERENCES:
patent: 2901349 (1959-08-01), Schaffert et al.
patent: 3481669 (1969-12-01), Roth et al.
patent: 3834809 (1974-09-01), Yoshizawa et al.

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