Silver halide photographic light-sensitive material

Details Silver halide photographic light-sensitive material Silver halide photographic light-sensitive material

1993-03-02

1995-10-17

Baxter, Janet C.

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Silver compound sensitizer containing

430604, 430605, G03C 109

Patent

active

054590272

ABSTRACT:
Disclosed herein is a silver halide photographic light-sensitive material comprising at least one layer made of a silver halide emulsion comprising a dispersion medium and silver halide grains dispersed in the dispersion medium. Each of the silver halide grains contains a metal or metal ions other than silver. The emulsion has been chemically sensitized in the presence of a tellurium compound which has a pseudo-first order reaction rate constant k of 1.times.10.sup.-8 to 1.times.10.sup.-0 min.sup.-1. The metal is at least one polyvalent metal selected from the group consisting of Ir, Rh, Pd, Ru, Pt, Os, Fe, Ni and Co. The metal ions are ammonium salt, acetate, nitrate, sulfate, phosphate, hydroxide, or complex salt of the metal. Telluroketones or phosphinetellurides is used as the tellurium compound. It is desirable that the silver halide emulsion is a monodispersed emulsion having a variation coefficient of 22% or less. The silver halide photographic light-sensitive material has its photographic properties, particularly the gradation and the reciprocity, improved, with no reduction of its sensitivity.

REFERENCES:
patent: 1574944 (1926-03-01), Sheppard
patent: 1602591 (1926-10-01), Sheppard
patent: 4431730 (1984-02-01), Urabe et al.
patent: 4914016 (1990-04-01), Miyoshi et al.
patent: 4923794 (1990-05-01), Sasaki et al.
patent: 5215880 (1993-06-01), Kojima et al.
patent: 5273872 (1993-12-01), Asami
patent: 5273874 (1993-12-01), Kojima et al.
Research Disclosure 308119, Dec. 1989.

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