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US 8,617,801 B2Granted
Film with blue dye
AssigneeCarestream Health, Inc.
InventorRobert E. Dickerson
Life of this patent
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Abstract
A radiographic X-ray film comprising a polymer support. One or more silver halide emulsion layers are coated on each side of the support. A blue dye is contained within at least one of the polymer support or in an adjacent hydrophilic layer in a sufficient amount to result in a CIELAB measurement of L* less than or equal to 80 and b* less than or equal to −25. This configuration provides, after imaging and development, radiographic images having desirable visual contrast, image tone, b*, and image quality.
Claims15
A radiographic X-ray film comprising:
- a polymer support;
- having disposed on both sides thereof one or more silver halide emulsion layers that are the same or different wherein at least 50% of the total silver halide grain projected surface area comprises a tabular silver halide;
- and
- a blue anthraquinone dye contained within the polymer support, or within one or more additional hydrophilic layers or in both the polymer support and in the one or more additional hydrophilic layers;
- and wherein the blue anthraquinone dye is present in a total amount of at least 1.1 mg/dm2 and wherein the b* value is between −25 and −35.
2 more elements
A radiographic X-ray film comprising:
- a polymer support;
- having disposed on both sides thereof one or more silver halide emulsion layers that are the same or different wherein at least 50% of the total silver halide grain projected surface area comprises a tabular silver halide;
- wherein at least one of the silver halide layers further comprises one or more additional silver halide grain morphologies, one of which is monodisperse cubic silver halide grains;
- and
- a blue anthraquinone dye contained within the polymer support, or within one or more additional hydrophilic layers or in both the polymer support and in the one or more additional hydrophilic layers;
- wherein the blue anthraquinone dye is present in a total amount of at least 1.1 mg/dm2;
- wherein the b* value is between −25 and −35;
- wherein the blue anthraquinone dye comprises:
- where each of G1, G2, and G3 is hydrogen or any alkyl group.
6 more elements
Dependencies are inferred from the claim text.