Method of making improved photoconductive particles

Details Method of making improved photoconductive particles Method of making improved photoconductive particles

1977-06-10

1978-07-04

Kimlin, Edward C.

Gas separation: apparatus

Magnetic separating means

96 15R, 252501, G03G 508, G03G 504

Patent

active

040986098

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 present either as discrete particles or chemically deposited on the zinc oxide particles. In the latter instance, 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 as water and precipitating the selenide or telluride, preferably in situ, on the surfaces of the particles.

REFERENCES:
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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