Electrophotographic photosensitive material suitable for offset

Details Electrophotographic photosensitive material suitable for offset Electrophotographic photosensitive material suitable for offset

1977-05-05

1979-09-18

Martin, Jr., Roland E.

Gas separation: apparatus

Magnetic separating means

96 33, 96 15R, 101453, G03G 5087, G03G 514

Patent

active

041681657

ABSTRACT:
An electrophotographic photosensitive material suitable for offset printing and lithography comprising a flexible substrate, an electroconductive back coat layer formed on one surface of the substrate, an electroconductive intermediate layer formed on the other surface of the substrate and a photoconductive layer formed on the intermediate layer, said photoconductive layer being composed of a fine powder of a photoconductor dispersed in an electrically insulating resin, wherein said intermediate layer is composed of a composition comprising (A) an acrylic resin, (B) a vinyl acetate polymer having a degree of polymerization of 100 to 1700 and (C) a resinous conducting agent, in said composition the weight ratio of acrylic resin (A)/vinyl acetate polymer (B) is in the range of 4/1 to 10/1 and the amount of the conducting agent (C) is 20 to 100 parts by weight per 100 parts by weight per 100 parts by weight of the sum of the components (A) and (B), said intermediate layer has such a multi-layer distribution structure that a combination of the vinyl acetate polymer and the acrylic resin is predominantly distributed in the surface portion falling in contact with the photoconductive layer, and the photoconductive layer is bonded to the intermediate layer through said surface portion.

REFERENCES:
patent: 3733200 (1973-05-01), Takaishi et al.
patent: 3753709 (1973-08-01), Staudenmayer et al.
patent: 3804668 (1974-04-01), Bakule et al.
patent: 3847606 (1974-11-01), Schwartz et al.
patent: 4015985 (1977-04-01), Jones

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