Organic laminated photosensitive material of positive charging t

Details Organic laminated photosensitive material of positive charging t Organic laminated photosensitive material of positive charging t

1990-04-04

1990-11-06

Welsh, J. David

Radiation imagery chemistry: process, composition, or product th

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

Process of making radiation-sensitive product

430135, 430 58, G03G 506, G03G 514

Patent

active

049685791

ABSTRACT:
Disclosed is an organic laminated photosensitive material of the positive charging type comprising an electroconductive substrate, a charge-transporting layer formed on the substrate and a charge-generating and transporting layer formed on the charge-transporting layer. The charge-transporting layer is composed of a binder resin containing a hole-transporting substance, and the charge-generating and transporting layer is composed of a binder resin containing a hole-transporting substance different from the hole-transporting substance in the charge-transporting layer and a charge-generating substance. The oxidation potential of the hole-transporting substance in the charge-generating and transporting layer is higher than that of the hole-transporting substance in the charge-transporting layer, but the difference of the oxidation potential between the hole-transporting substances of the two layers is smaller than 0.3 eV. In this photosensitive material, injection of holes between the two layers can be easily performed, and the sensitivity can be highly improved.

REFERENCES:
patent: 4490452 (1984-12-01), Champ
patent: 4727009 (1988-02-01), Takai

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