Film with blue dye
View Patent ↗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.
1. 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/dm 2 and wherein the b* value is between −25 and −35.
2. The radiographic X-ray film of claim 1 wherein L* is between 70 and 80.
3. The radiographic X-ray film of claim 1 wherein the silver halide comprises silver bromoiodide.
4. The radiographic X-ray film of claim 1 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.
5. The radiographic X-ray film of claim 1 wherein the silver halide is comprised of a halide composition having any combination of bromide, iodide, and chloride, subject to the sum total of halide moles equal to the moles of silver.
6. The radiographic X-ray film of claim 1 wherein the one or more additional hydrophilic layers is an interlayer and, wherein the blue dye is in the support or in the one or more interlayers or in both the support and one or more interlayers.
7. The radiographic X-ray film of claim 1 wherein the blue dye is in the polymer support.
8. The radiographic X-ray film of claim 1 wherein the blue anthraquinone dye comprises:
where each of G1, G2, and G3 is hydrogen or any alkyl group.
9. The radiographic X-ray film of claim 1 wherein the polymer support comprises a polyethylene terephthalate.
10. The radiographic X-ray film of claim 1 wherein the blue anthraquinone dye is one of:
11. The radiographic X-ray film of claim 1 that is a mammography film.
12. The radiographic X-ray film of claim 1 that is a general purpose radiography film.
13. The radiographic X-ray film of claim 1 where the same silver halide emulsion is coated on both sides of the support, and comprises a tabular silver halide emulsion with an aspect ratio of greater than or equal to 5.
14. The radiographic X-ray film of claim 1 where different silver halide emulsions each comprising tabular grains, non-tabular grains, or mixtures thereof are coated on each side of the support, and wherein the tabular silver halide grains have an aspect ratio of greater than or equal to 5.
15. 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/dm 2;
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.