Multilayered electrophotographic recording medium

Details Multilayered electrophotographic recording medium Multilayered electrophotographic recording medium

1982-03-16

1983-06-21

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 77, 430 76, 430 78, G03G 506

Patent

active

043894755

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 ##STR1## where R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are each hydrogen or a non-ionic substituent, X is the radical of a methyleneactive 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: 3775105 (1973-11-01), Kukla
patent: 3824099 (1974-07-01), Champ et al.
patent: 3898084 (1975-08-01), Champ et al.
patent: 4123270 (1978-10-01), Heil et al.
Chem. Ber. 100 (1967), pp. 2261-2273.

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