Radiation imagery chemistry: process – composition – or product th – Radiation sensitive product – Two or more radiation-sensitive layers containing other than...
Patent
1985-01-30
1986-04-29
Downey, Mary F.
Radiation imagery chemistry: process, composition, or product th
Radiation sensitive product
Two or more radiation-sensitive layers containing other than...
430495, 430509, 430539, 430567, 430966, G03C 102, G03C 516
Patent
active
045857296
ABSTRACT:
A silver halide photographic light-sensitve material is disclosed. The material is comprised of a transparent support having provided on one side of the support at least two silver halide emulsion layers and a surface-protecting layer. One of the two silver halide emulsion layers is a tabular silver halide emulsion layer containing tabular silver halide grains having a diameter at least five times the thickness of the grains. The other silver halide emulsion layer is a non-tabular silver halide emulsion layer containing non-tabular silver halide grains. The tabular silver halide emulsion layer is positioned closer to the support than the non-tabular silver halide emulsion layer, and the non-tabular silver halide emuslion layer is positioned closer to the support than the surface-protecting layer. The material may include two similar silver halide emulsion layers and a surface-protecting layer on the opposite side of the support. The material provides images with improved sharpness without a decrease in sensitivity while effectively utilizing the amount of silver.
REFERENCES:
patent: 3923515 (1975-12-01), van Stappen
patent: 4399215 (1983-08-01), Wey
patent: 4400463 (1983-08-01), Maskasky
patent: 4411986 (1983-10-01), Abbott et al.
Research Disclosure, Aug. 1979, vol. 184, pp. 433-441, #18431.
Sugimoto Tadao
Yamada Sumito
Downey Mary F.
Fuji Photo Film Co. , Ltd.
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