Method of image reversal in colour electrophotography

Details Method of image reversal in colour electrophotography Method of image reversal in colour electrophotography

G - Physics

03

G

314/12

G03G 5/12 (2006.01) G03G 13/01 (2006.01) G03G 13/22 (2006.01)

Patent

CA 1279087

ABSTRACT OF THE DISCLOSURE An electrophotographic method of producing positive color proof copies from negative films wherein a charged photoconductor is exposed to the negative film and toned with a conductive toner forming image deposits in the unexposed areas. The conductive deposits are transferred to a dielectric paper and af- fixed thereto. The dielectric paper is charged, the charge being accepted only in areas free of the conduc- tive deposits, i.e. the final image areas. The charged areas are toned with color toners and the color toner deposit transferred to printing stock to provide the positive proof.

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