Blue-sensitive film for radiography and imaging assembly and method
AssigneeEastman Kodak Company
InventorsMark P. Pavlik, Joseph P. Pepe, Susan K. Mroczek
Life of this patent
Estimating the term…
Abstract
A blue-sensitive, radiographic silver halide film comprises a silver halide emulsion layer comprising predominantly tabular silver halide grains that have an aspect ratio of from 8 to 14.5, a grain thickness of from about 0.15 to about 0.3 μm, and comprise at least 90 mol % bromide and up to 6 mol % iodide, based on total silver halide. The tabular silver halide grains are dispersed in a hydrophilic polymeric vehicle mixture comprising at least 0.5% of oxidized gelatin, based on the total dry weight of the polymeric vehicle mixture in the emulsion layer.
Claims17
A blue-sensitive, radiographic silver halide film comprising a support having first and second major surfaces,
- said radiographic silver halide film having disposed on said first major support surface, one or more hydrophilic colloid layers including a first silver halide emulsion layer, and on the second major support surface, one or more hydrophilic colloid layers including a second silver halide emulsion layer,
- said first silver halide emulsion layer comprising predominantly tabular silver halide grains that have an aspect ratio of from 8 to 14.5, a grain thickness of from about 0.15 to about 0.3 μm, and that comprise at least 90 mol % bromide and up to 6 mol % iodide, based on total silver halide,
- wherein said tabular silver halide grains in said first silver halide emulsion layer are dispersed in a hydrophilic polymeric vehicle mixture comprising at least 0.5% of oxidized gelatin, based on the total dry weight of said polymeric vehicle mixture.
A blue-sensitive, radiographic silver halide film comprising a support having first and second major surfaces,
- said radiographic silver halide film having disposed on said first major support surface, one or more hydrophilic colloid layers including a first silver halide emulsion layer, and on the second major support surface, one or more hydrophilic colloid layers including a second silver halide emulsion layer,
- said first and second silver halide emulsion layers having essentially the same composition and comprising predominantly tabular silver halide grains that have an aspect ratio of from about 12 to about 14, a grain thickness of from about 0.16 to about 0.19 μm, and comprising at least 95 mol % bromide and from about 0.9 to about 3 mol % iodide, based on total silver halide in said emulsion layers, wherein said iodide being substantially uniformly distributed throughout said tabular grains,
- wherein said tabular silver halide grains in said first and second silver halide emulsion layers are dispersed in a hydrophilic polymeric vehicle mixture comprising from about 0.8% to about 1.2% of deionized oxidized gelatin, based on the total dry weight of said polymeric vehicle mixture.
Dependencies are inferred from the claim text.