Photographic emulsions containing internally modified silver hal

Radiation imagery chemistry: process – composition – or product th – Radiation sensitive product – Silver compound sensitizer containing

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430569, 430604, 430605, 430606, 430612, 430596, G03C 106

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active

049332724

ABSTRACT:
Photographic silver halide emulsions are disclosed comprised of radiation sensitive silver halide grains exhibiting a face centered cubic crystal lattice structure internally containing a nitrosyl or thionitrosyl coordination ligand and a transition metal chosen from groups 5 to 10 inclusive of the periodic table of elements.

REFERENCES:
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patent: 3890154 (1975-06-01), Ohkubo et al.
patent: 4126472 (1978-11-01), Sakai et al.
patent: 4147542 (1979-04-01), Habu et al.
patent: 4643965 (1987-02-01), Kubota et al.
patent: 4835049 (1989-05-01), Janusonis et al.
Research Disclosure, vol. 176, Dec. 1978, Item 17643, Section IA.
D. M. Samoilovich, "The Influence of Rhodium and Other Polyvalent Ions on the Photographic Properties of Silver Halide Emulsions", in a paper presented to 1978 International Congress of Photographic Science, Rochester Institute of Technology, Aug. 20-26, 1978.
At the 1982 International Congress of Photographic Science at the University of Cambridge, R. S. Eachus presented a paper titled, "The Mechanism of Ir.sup.3+ Sensitization of Silver Halide Materials".
B. H. Carroll, "Iridium Sensitization: A Literature Review", Photographic Science and Engineering, vol. 24, No. 6, Nov./Dec. 1980, pp. 265-267.

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