Electrophotographic printing machine

Details Electrophotographic printing machine Electrophotographic printing machine

1974-08-14

1976-06-01

Greiner, Robert P.

Photocopying

Including fiber optics

118637, 96 13, G03G 1509, G03G 1500

Patent

active

039604446

ABSTRACT:
An electrophotographic printing machine and method of use therefor in which a plurality of light images of the same original document are formed. Each of the light images is of a different predetermined magnitude and irradiates a charged photoconductive member to record a plurality of electrostatic latent images thereof. The electrostatic latent images are developed with developer mixes having differing predetermined concentrations of toner particles therein. These developed powder images are transferred, in superimposed registration with one another, onto a common sheet of support material forming a high quality reproduction of the original document.

REFERENCES:
patent: 3212889 (1965-10-01), Gundlach et al.
patent: 3815988 (1974-06-01), McVeigh et al.
patent: 3872825 (1975-03-01), Davidson

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