Image forming device for creating a color image having pixel ele

Details Image forming device for creating a color image having pixel ele Image forming device for creating a color image having pixel ele

1994-01-06

1996-08-27

Ramirez, Nestor R.

Photocopying

Contact printing

Light boxes

355327, G03G 1501

Patent

active

055506267

ABSTRACT:
An electrophotographic color printer exposes a photosensitive body to form an exposure pattern thereon. Toner material of two different colors is then applied to the exposure pattern by developers. The toner materials are subsequently transferred to a recording medium and fixed thereon. The toner materials are applied to the photosensitive body so that each of the two colors of toner materials have regions of two different thicknesses so they will have different thicknesses when applied to the recording medium. When two of the thicker regions are adjacent, the fixing of the toner materials will cause the toner materials of the two regions to mix. Thus, if the two adjacent thicker regions are of different colors, a third color will be produced. Toner material of further colors may also be transferred to the recording medium, by applying further toner materials to the same or another photosensitive body using further developers. The exposure pattern has a plurality of voltage levels having predetermined relationships to one another.

REFERENCES:
patent: 4731634 (1988-08-01), Stark
patent: 5121171 (1992-06-01), Knapp
patent: 5122843 (1992-06-01), Yokoyama et al.
patent: 5223906 (1993-06-01), Harris
patent: 5406313 (1995-04-01), Noami et al.
Knapp, John F. and Richard F. Koehler, "Tandem Trilevel Process Color Printer," Xerox Disclosure Journal, Nov. 1991, pp. 389-390.

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