Organic electrophotographic recording medium

Details Organic electrophotographic recording medium Organic electrophotographic recording medium

1982-03-16

1984-01-31

Welsh, John D.

Radiation imagery chemistry: process, composition, or product th

Electric or magnetic imagery, e.g., xerography,...

Radiation-sensitive composition or product

430 58, 430 72, G03G 506

Patent

active

044290292

ABSTRACT:
An electrophotographic recording medium which consists essentially of an electrically conductive base and a photosemiconductive double layer which comprises a first layer containing charge carrier-producing dyes, and a second layer containing one or more compounds which are charge carrier-transporting when exposed to light, wherein the charge carrier-producing dyes are those of the formula I ##STR1## or of the formula II ##STR2## where R.sup.1 is hydrogen, alkyl, aralkyl, alkyl or alkylaryl, and Z may be a a fused aromatic system, and the degree to which the aromatic skeleton is halogen-substituted is from 45 to 75% of the maximum possible, and a process for the production of this electrophotographic recording medium.

REFERENCES:
patent: 1715430 (1929-06-01), Schmidt et al.
patent: 3904407 (1975-09-01), Regensburger et al.
patent: 4156757 (1979-05-01), Graser et al.
Chemical Abstracts, vol. 83, No. 12, (1975), 106201v.

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