Electrophotographic recording material

Gas separation: apparatus – Magnetic separating means

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96 16, 252501, G03G 506

Patent

active

039559785

ABSTRACT:
This invention relates to an electrophotographic recording material comprising an electrically conducting supporting material having thereon a photoconductive double layer of organic materials, said double layer being composed of a homogeneous, opaque, charge carrier-producing dyestuff layer and a transparent top layer of insulating material containing at least one charge-transporting compound, the transparent top layer comprising a binder and a charge-transporting aromatic compound with an extended .pi.-electron system which is substituted by at least one substituted amino group, and the dyestuff layer comprising a condensation product of an aromatic aldehyde and a compound carrying an active methylene group.

REFERENCES:
patent: 3287114 (1966-11-01), Hoegl
patent: 3384488 (1968-05-01), Tulagin
patent: 3536484 (1970-10-01), Dowden et al.
patent: 3546085 (1970-12-01), Weinberger et al.
patent: 3598582 (1971-08-01), Herrick et al.
patent: 3725058 (1973-04-01), Hayashi et al.
patent: 3740218 (1973-06-01), Contois et al.
patent: 3842038 (1974-10-01), Lohr et al.
Chadwell et al., "Photoconductor," IBM Tech. Discl. Bull., Vol. 14, No. 9, Feb. 1972, p. 2781.

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