Photoconductive and radioconductive compositions and elements co

Details Photoconductive and radioconductive compositions and elements co Photoconductive and radioconductive compositions and elements co

1975-12-03

1977-03-22

Klein, David

Gas separation: apparatus

Magnetic separating means

252501, 346160, G03G 504

Patent

active

040134644

ABSTRACT:
Photoconductive and radioconductive insulating compositions of desirably low dark conductivity and improved resistance to fatigue include tetragonal lead oxide, a binder of polyvinylacetate, polyvinylformal and/or polyvinylbutyral and a small effective amount of an anhydride capable of inhibiting dark conductivity in the composition, particularly under repeated use. Preferred anhydrides are phthalic and maleic anhydrides in an amount of less than about 4 percent of the weight of lead oxide in the composition. Such compositions can be carried on an electrically conductive support to provide elements that are useful for electrophotographic and electroradiographic imaging.

REFERENCES:
patent: 3008825 (1961-11-01), Van Dorn et al.
patent: 3406063 (1968-10-01), Matkan et al.
patent: 3488189 (1970-01-01), Mayer et al.
patent: 3577272 (1971-05-01), Reithel
patent: 3607261 (1971-09-01), Amidon et al.
patent: 3929478 (1975-12-01), Curtin

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