Abstract

The latent image formation in electrophotography is accomplished by the imagewise exposure of a corona-charged photoconductor film. Organic photoconductors are finding increased application in electrophotography as a result of dramatic strides made in the identification and invention of new materials. The photogeneration and transport functions are separated in a dual layer concept in which a thin layer of an efficient photoconductive pigment is coated onto a thicker layer capable of transporting charge. A further refinement is the concept of molecular doping of inert binders to enable the charge transport function. A great variety of efficient photoconductive systems may be produced by combining different pigments with molecularly doped transport layers.

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