Silver halide photographic material

Details Silver halide photographic material Silver halide photographic material

1986-12-03

1988-12-13

Louie, Won H.

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Silver compound sensitizer containing

430583, 430584, 430585, 430588, 430567, 430569, 430599, G03C 112, G03C 102

Patent

active

047910534

ABSTRACT:
A silver halide photographic material comprising a support having thereon at least one emulsion layer which contains a silver chlorobromide or silver chloride each having an iodide content of 3 mol % or less. The monodispersed emulsion is prepared in a process comprising the steps of, in sequence, forming silver halide grains which have a grain size distribution represented by a variation coefficient of 0.2 or less, causing halogen replacement in silver halide grains by addition of a water-soluble bromide in a proportion of from 0.6 to 20 mol % with respect to the total silver halide in the presence of at least one sensitizing dye selected from among simple cyanine dyes, carbocyanine dyes, and dicarbocyanine dyes at individual surfaces of the silver halide grains, and then subjecting the resulting silver halide grains to chemical sensitization, thereby achieving enhanced sensitivity and improved pressure characteristics.

REFERENCES:
patent: 4183756 (1980-01-01), Locker
patent: 4225666 (1980-09-01), Locker et al.
patent: 4286055 (1981-08-01), Forster et al.
patent: 4683193 (1987-07-01), Ihama et al.

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