Silver halide photographic materials

Details Silver halide photographic materials Silver halide photographic materials

1980-06-16

1982-09-14

Brown, J. Travis

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Silver compound sensitizer containing

430569, 430603, 430605, G03C 128

Patent

active

043496237

ABSTRACT:
A silver halide photographic material is described, comprising an emulsion which is chemical-ripened in the presence of a compound having the formula (I) or (II), ##STR1## wherein R.sub.1 is hydrogen, an alkali metal ion, or an ammonium ion; R.sub.2 is an alkyl group, an alkoxy group, an aryloxy group, an acyl group, an amino group, a substituted amino group, a halogen atom, an acyloxy group, an acylamino group, a carbamoyl group, a nitro group, an aryl group, an allyl group, a sulfo group or a carboxy group; Y represents a divalent linking group; and n is 0, 1, or 2; such emulsions show high sensitivity without fog and have good stability.

REFERENCES:
patent: 1574944 (1926-03-01), Sheppard
patent: 1763989 (1930-06-01), Sheppard et al.
patent: 2870015 (1959-01-01), Allen et al.
patent: 3080254 (1963-03-01), Grant
patent: 4224403 (1980-09-01), Toda et al.

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