Patent ID: 6358661
Filing Date: 2002-03-19
Classification: G03C,Y10S

Abstract:
A radiographic silver halide film comprising a support having first and second major surfaces and that is capable of transmitting X-radiation,said film having disposed on said first major support surface, one or more hydrophilic colloid layers including a single silver halide emulsion layer, and on said second major support surface, one or more hydrophilic colloid layers including a single silver halide emulsion layer, each of said silver halide emulsion layers comprising silver halide grains that (a) have the same or different composition in each silver halide emulsion layer, (b) account for at least 50% of the total grain projected area within each silver halide emulsion layer, (c) have an average thickness of less than 0.3 &mgr;m, and (d) have an average aspect ratio of greater than 5, all hydrophilic layers of the film being fully forehardened and wet processing solution permeable for image formation within 45 seconds, said film being free of particulate dyes, and said film being capable of providing an image with visually adaptive contrast whereby the upper scale contrast is at least 1.5 times the lower scale contrast of a sensitometric D vs. log E curve.