Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – To produce color reproduction
Patent
1977-10-31
1980-10-14
Martin, Jr., Roland E.
Radiation imagery chemistry: process, composition, or product th
Electric or magnetic imagery, e.g., xerography,...
To produce color reproduction
430 67, 430 55, G03G 1301, G03G 1324
Patent
active
042282314
ABSTRACT:
A subtractive color electrophotographic process is disclosed for producing a multicolor print from a single exposure of a color original. The process utilizes a novel multilayer recording element containing an electrically conducting layer, an insulating layer and two or more photoconductive layers, each spectrally sensitized to a different portion of the optical spectrum. In carrying out the process, the recording element is first uniformly charged and exposed to a color original and then developed by a multistep procedure. Each step of the development procedure comprises flood exposing the recording element to radiation to which at least one of the photoconductive layers is responsive while applying toner particles having a different subtractive color characteristic and an appropriate electrical bias.
REFERENCES:
patent: 2962374 (1960-11-01), Dessauer
patent: 2962375 (1960-11-01), Schaffert
patent: 3672887 (1972-06-01), Matsumoto et al.
patent: 3754908 (1973-08-01), Hercock et al.
patent: 4026704 (1977-05-01), Rochlitz
patent: 4070185 (1978-01-01), Kato et al.
Kaukeinen Joseph Y.
Turnblom Ernest W.
Eastman Kodak Company
Goodrow John L.
Husser John D.
Martin Jr. Roland E.
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