Sensitizing dye combination for photographic materials

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

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430567, 430583, 430584, 430586, G03C 129

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active

055976875

ABSTRACT:
A supersensitizing dye combination for silver halide photographic materials is disclosed. The combination is of a first dye according to the formula: ##STR1## Z.sub.1 and Z.sub.2 each independently represents the atoms necessary to complete a substituted or unsubstituted heterocyclic nucleus,

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CRC Handbook Of Chemistry & Physics 63rd Edition Ed. R. Weast (1982) p. D-164.
P. Gilman, Review of the Mechanisms of Supersensitization, Photographic Science and Engineering, 18, pp. 418-430, Jul./Aug. 1974.
T. Penner & P. Gilman, Spectral Shifts and Physical Layering of Sensitizing Dye Combinations in Silver Halide Emulsions, 20, pp. 97-106, May/Jun. 1976.
James, The Theory of the Photographic Process, 4th Ed., pp. 259-265, 1977.

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