Patent Document ID: 5389506
Application ID: 08112006
Patent Status: 1

Claim One:
1. A photographic element comprised of a support and at least two silver halide emulsion layers differing in threshold sensitivities for recording exposures within the same region of the spectrum, wherein said silver halide emulsion layers differing in threshold sensitivities (1) each record exposures within only one of the blue, green or red regions of the spectrum, (2) are each orthochromatically sensitized to record exposures in the blue and green portions of the spectrum, or (3) are each panchromatically sensitized to record exposures in the blue, green and red portions of the spectrum, one of said emulsion layers is capable of recording an image that exhibits a higher signal to noise ratio than at least one other of said emulsion layers in at least one exposure range above their threshold sensitivities, and at least two of the emulsion layers differing in threshold sensitivities each contain a different dye image providing material capable of providing a different image dye after processing, each of said different dye image providing materials being chosen so that when any two of the image dyes produced by said different dye image providing materials are compared, at least 25 percent of the half peak absorption band width of each image dye lies in a spectral region unoccupied by the half peak absorption band width of the compared image dye.