Electrophotographic process having developed hydrophilic image a

Details Electrophotographic process having developed hydrophilic image a Electrophotographic process having developed hydrophilic image a

1973-06-21

1976-01-27

Torchin, Norman G.

Gas separation: apparatus

Magnetic separating means

96 1LY, G03G 1314

Patent

active

039350088

ABSTRACT:
A process for the production of a copy from an original which includes creating a charge image on a hydrophobic photoconductive material, pre-developing the charge image by the application thereto of a hydrophilic solid substance, meniscally contacting the pre-developed image with an aqueous liquid and transferring the image onto a copy receiving material. The hydrophobic photoconductive material may be a charge transfer complex of polyvinyl carbazole and trinitrofluorenone. The hydrophilic solid substance may be water-insoluble starch, silica, iron-III-oxide, zinc oxide, methylene blue, nigrosin or acid violet.

REFERENCES:
patent: 2297691 (1942-10-01), Carlson
patent: 3157546 (1964-11-01), Cover
patent: 3287121 (1966-11-01), Hoegl
patent: 3386822 (1968-06-01), Brynko

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