Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – Radiation-sensitive composition or product
Patent
1985-05-28
1986-10-28
Goodrow, John L.
Radiation imagery chemistry: process, composition, or product th
Electric or magnetic imagery, e.g., xerography,...
Radiation-sensitive composition or product
430 94, G03G 508
Patent
active
046198822
ABSTRACT:
A copper activated photoconductor is disclosed having reduced photosensitivity and the general formula X:Cu wherein X is selected from the group consisting of CdS, CdSe, and Cd(S,Se), and an iron content of from about 0.01% to about 0.05% by weight the presence of which reduces the photosensitivity of the photoconductor by about 30%.
A process is disclosed for reducing the photosensitivity of a photoconductor. The process involves forming a relatively uniform admixture consisting essentially of copper, iron, the copper and iron being added in amounts which result in a copper level of from about 0.01% to about 0.09% and an iron content of from about 0.01% to about 0.05% by weight in the final reduced photosensitive photoconductor, from about 3% to about 10% cadmium chloride, from about 2% to about 30% by weight Y wherein Y is selected from the group consisting of S, Se, and mixtures thereof, and the balance being the photoconductor having the formula X:Cu with X as described above, and wherein Y is the same as the anionic composition of the photoconductor. The admixture is heated at a sufficient temperature for a sufficient time to form a reduced photosensitive photoconductor material which is cooled under nitrogen to ambient temperature. The portion of the material having an average particle size no greater than about 3 microns is separated from the balance of the material, washed with water to remove any water soluble impurities and dried to form the final reduced photosensitive photoconductor.
REFERENCES:
patent: 3565686 (1971-02-01), Babcock et al.
patent: 4338389 (1982-07-01), Suzuki et al.
patent: 4495265 (1985-01-01), Faria
Castle Donald R.
Goodrow John L.
GTE Products Corporation
Quatrini L. Rita
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