Layered electrophotographic recording medium comprising heterocy

Details Layered electrophotographic recording medium comprising heterocy Layered electrophotographic recording medium comprising heterocy

1983-11-22

1984-11-06

Welsh, John D.

Radiation imagery chemistry: process, composition, or product th

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

Radiation-sensitive composition or product

430 59, 430 78, G03G 506, G03G 514

Patent

active

044812728

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 general formula I ##STR1## where R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are each hydrogen or a non-ionic substituent, X and Y are each the radical of a methylene-active compound, or of an aliphatic, cycloaliphatic, araliphatic, aromatic or heterocyclic amine or hydrazine, and Z is hydrogen, methyl or phenyl, and the production of this recording medium.

REFERENCES:
patent: 3646033 (1972-02-01), Leister et al.
patent: 3775105 (1973-11-01), Kukla
patent: 3784376 (1974-01-01), Fox
patent: 3824099 (1974-07-01), Champ et al.
patent: 3895944 (1975-07-01), Wiedemann et al.
patent: 3898084 (1975-08-01), Champ et al.
patent: 4191566 (1980-04-01), Jeanner et al.
Kerns, Electrical Properties of Organic Solids, (Thesis) Lawrence Rad. Lab., V. C. Berkley, Cal. (3/1960) p. 7.

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