Elements and processes for producing superior photographic records
AssigneeEastman Kodak Company
InventorJames E. Sutton
Life of this patent
Estimating the term…
Abstract
A process of producing a viewable photographic image is disclosed wherein an imagewise exposed photographic element containing at least two silver halide emulsion layers capable of recording within the same region of the spectrum and having differing threshold sensitivities produces during photographic processing spectrally distinguishable images. Separate image records are obtained from the emulsion layers, and the image record corresponding to the photographically superior image is preferentially employed in producing a viewable image.
Claims16
A photographic element comprised of a support and two silver halide emulsion layers differing in threshold sensitivities for recording exposures within the same region of the spectrum, wherein
- one of said emulsion layers exhibits a slower speed and a lower granularity than said emulsions layer remaining and
- only one of said emulsion layers contains a dye image providing material.
A photographic element comprised of a transparent film support and two silver halide emulsion layers differing in threshold sensitivities for recording exposures within the same region of the spectrum, wherein
- each of the emulsion layers is panchromatically sensitized,
- only one of the emulsion layers contains a dye-forming coupler for producing a dye image upon imagewise exposure and processing, the dye-forming coupler being present in an amount sufficient to react with all of the oxidized developing agent produced by maximum silver halide development during processing, and
- the emulsion layer exhibiting a slower speed is capable of producing a lower granularity image.
A process of producing a viewable photographic image comprising
- photographically processing an imagewise exposed photographic element containing two silver halide emulsion layers capable of recording within the same region of the spectrum and having differing threshold sensitivities to produce a photographic image and
- employing the photographic image to produce a viewable image, wherein
- silver images are produced by the emulsion layers of differing threshold sensitivities during processing,
- a dye image is produced by only one of the emulsion layers of differing threshold sensitivities during processing,
- a lower granularity image is produced within a selected range of exposure levels by a slower of the emulsion layers of differing threshold sensitivities,
- separate image records are obtained from the emulsion layers of differing threshold sensitivities, and
- the image record corresponding to the lower granularity image is preferentially employed in producing the viewable image.
Dependencies are inferred from the claim text.