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US 5,830,628 AGranted
Color photographic recording material
AssigneeAgfa-Geuaert
InventorsHans-Ulrich Borst, Detlef Brennecke, Ralf Buscher, Johannes Willsau, Peter Bell
Life of this patent
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AssigneeAgfa-Geuaert
InventorsHans-Ulrich Borst, Detlef Brennecke, Ralf Buscher, Johannes Willsau, Peter Bell
Estimating the term…
A colour photographic silver halide material with at least two blue-sensitive, yellow-coupling silver halide emulsion layers of differing photographic sensitivity, at least two green-sensitive, magenta-coupling silver halide emulsions layers of differing photographic sensitivity and at least two red-sensitive, cyan-coupling silver halide emulsion layers of differing photographic sensitivity, at least one interlayer Z-1 below the lowermost red-sensitive silver halide emulsion layer and/or at least one interlayer Z-2 below the lowermost green-sensitive silver halide emulsion layer, in which material a coupler is additionally used in at least one silver halide emulsion layer, which coupler couples to yield a colour which is not complementary to the spectral sensitisation of the layer concerned, and Z-1 and/or Z-2 contain a silver halide emulsion which has tabular grains with an aspect ratio of >2, an average diameter of a sphere of equal volume of .gtoreq.0.3 .mu.m and a diameter of a circle of equal projected surface area of the tabular grains of .gtoreq.0.3 .mu.m, is distinguished by improved sensitivity and an improved sensitivity/grain ratio.
A color photographic silver halide material which comprises at least two blue-sensitive, yellow-coupling silver halide emulsion layers of differing photographic sensitivity, at least two green-sensitive, magenta-coupling silver halide emulsions layers of differing photographic sensitivity and at least two red-sensitive, cyan-coupling silver halide emulsion layers of differing photographic sensitivity, at least one interlayer Z-1, which is closer to the support than the red-sensitive silver halide emulsion layer located closest to the support and/or at least one interlayer Z-2 which is closer to the support than the green-sensitive silver halide emulsion layer located closest to the support, wherein a coupler is additionally used in at least one silver halide emulsion layer, which coupler couples to yield a color which is not complementary to the spectral sensitization of the layer which contains said coupler, and Z-1 and/or Z-2 contain a silver halide emulsion which has tabular grains with an aspect ratio of >2, an average diameter of a sphere of equal volume of .gtoreq.0.3 .mu.m and a diameter of a circle of equal projected surface area of the tabular grains of .gtoreq.0.3 .mu.m.
Dependencies are inferred from the claim text.