Photoconductive particles of zinc oxide

Details Photoconductive particles of zinc oxide Photoconductive particles of zinc oxide

1975-07-07

1977-08-23

Kimlin, Edward C.

Gas separation: apparatus

Magnetic separating means

96 15N, 252501, G03G 508, G03G 504

Patent

active

040438139

ABSTRACT:
An improved photoconductive surface coating is provided having panchromatic sensitivity and increased resistance against spectral response shift upon reuse of the photoconductive layer. The surface coating comprises zinc oxide particles, a minor amount of a group IIB selenide or telluride and a binder in substantially uniform mixture. The selenide or telluride is chemically deposited on the zinc oxide particles. The resulting particles exhibit bi-chargeability and substantially increased light sensitivity. The selenide or telluride can be deposited chemically in accordance with one embodiment by dispersing zinc oxide particles in a medium such an water and precipitating the selenide or telluride, preferably in situ, on the surface of the particles.

REFERENCES:
patent: 3352670 (1967-11-01), Coles
patent: 3634333 (1972-01-01), Tamai
patent: 3652276 (1972-02-01), Bartlett
patent: 3658523 (1972-04-01), Noe
patent: 3754906 (1973-08-01), Jones et al.
patent: 3801316 (1974-04-01), Bowman
patent: 3904409 (1975-09-01), Hanada et al.

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