Indirect electrophotographic process with a nitro-phenolsultonep

Details Indirect electrophotographic process with a nitro-phenolsultonep Indirect electrophotographic process with a nitro-phenolsultonep

1974-06-27

1977-10-18

Klein, David

Gas separation: apparatus

Magnetic separating means

96 16, G03G 509

Patent

active

040544508

ABSTRACT:
Fading of the light-sensitivity of a dye-sensitized photoconductive layer used repeatedly for image formation in indirect electrophotographic copying is avoided by employing a photoconductive layer sensitized by a nitro-substituted dye such as a nitro-fluorescein or a nitro-phenolsulfonephthalein.

REFERENCES:
patent: 3122435 (1964-02-01), Noe et al.
patent: 3287116 (1966-11-01), Hoegl
patent: 3498835 (1970-03-01), Chiang et al.
patent: 3689260 (1972-09-01), Honjo
patent: 3832171 (1974-08-01), Janssens et al.

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