Production process of silver halide photographic emulsion...

Details Production process of silver halide photographic emulsion... Production process of silver halide photographic emulsion...

2005-01-04

2005-01-04

Letscher, Geraldine (Department: 1752)

Radiation imagery chemistry: process, composition, or product th

Nonradiation sensitive image processing compositions or...

C430S570000, C430S572000, C430S574000, C430S576000, C430S581000, C430S582000, C430S583000, C430S584000, C430S585000

Reexamination Certificate

active

06838231

ABSTRACT:
A process for producing a spectrally sensitized silver halide photographic emulsion having high sensitivity. A process for producing a silver halide photographic emulsion comprising as a sensitizing dye at least one connection dye having two or more chromophores connected through a covalent bond, the process comprising adding said connection dye to a silver halide photographic emulsion and allowing at least one chromophore out of a plurality of chromophores in the molecule of the connection dye to change in the adsorption strength to a silver halide grain; and a process for producing a silver halide photographic emulsion comprising a silver halide grain having adsorbed on the surface thereof a sensitizing dye in multiple layers, the process comprising adding one or a plural of sensitizing dye(s) to said silver halide emulsion and allowing at least one sensitizing dye out of added sensitizing dyes to change in the adsorption strength to a silver halide grain.

REFERENCES:
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patent: 6-27578 (1994-02-01), None

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