Radiation imagery chemistry: process – composition – or product th – Radiation sensitive product – Silver compound sensitizer containing
Patent
1992-11-03
1993-12-28
Baxter, Janet C.
Radiation imagery chemistry: process, composition, or product th
Radiation sensitive product
Silver compound sensitizer containing
430600, 430603, 430604, G03C 1035, G03C 109
Patent
active
052738728
ABSTRACT:
A silver halide photographic material having at least one light-sensitive emulsion layer on a support, wherein at least one light-sensitive emulsion layer has an emulsion containing silver halide grains of silver chlorobromide, silver chloroiodide, silver chloroiodobromide or silver chloride having a silver chloride content of 90 mol % or more, and incorporated with the silver halide grains are an iron compound of from 10.sup.-7 to 10.sup.-3 mol per mol of silver halide, and a tellurium compound of from 10.sup.-7 to 10.sup.-4 mol per mol of silver halide, before completion of physical ripening of the grains. The photographic material of the present invention is exposed for a short time period of 10.sup.-3 second or less and then color-developed to form a photographic image. The material has high sensitivity and high contrast and has excellent rapid processability. The material is free from fluctuations in the sensitivity and gradation under variations in the ambient temperature during exposure, and also under variation of the exposure intensity, and it is especially suitable to high-intensity exposure.
REFERENCES:
patent: 1574944 (1926-03-01), Sheppard
patent: 1602591 (1926-10-01), Sheppard
patent: 3772031 (1973-11-01), Berry et al.
patent: 5057402 (1991-10-01), Shiba et al.
Baxter Janet C.
Fuji Photo Film Co. , Ltd.
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