Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – To produce color reproduction
Patent
1984-07-10
1986-03-25
Martin, Roland E.
Radiation imagery chemistry: process, composition, or product th
Electric or magnetic imagery, e.g., xerography,...
To produce color reproduction
430 55, 346157, 346160, 355 4, G03G 1301
Patent
active
045783314
ABSTRACT:
An electrophotographic color image forming process wherein three light beams each representing image information of one of three primary colors or yellow, magenta and cyan of a color document to be recorded obtained by color separation are projected against an electrophotographic photosensitive member to form electrostatic latent images which are developed by toners of the three different colors, respectively, and printed by transfer-printing, to record a color image. The image information of three colors is simultaneously written to a surface of the photosensitive member as three scanning lines either by successively writing a plurality of sets of three scanning lines each representing image information of one color or by writing image information of different colors of the same set separately in three different zones, so that the scanning lines representing image information of different colors form a repeating series of three stripes of different colors. The electrostatic latent images formed on the scanning lines are excited in positions immediately before developing sections of respective colors and developed by the toners of respective colors to produce toner images of different color which are printed by transfer-printing on a transfer-printing sheet.
REFERENCES:
patent: 3230303 (1966-01-01), Macovski et al.
patent: 3832170 (1974-08-01), Nagamatsu et al.
patent: 3884686 (1975-05-01), Bean
patent: 4275134 (1981-06-01), Knechtel
Hariu Hajime
Hasebe Mitsuo
Ikeda Itsuo
Kurokawa Junji
Miyagawa Seiichi
Martin Roland E.
Ricoh & Company, Ltd.
Shoup Guy W.
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