Color photographic silver halide duplicating element and process
AssigneeEastman Kodak Company
InventorsJohn F. Sawyer, David E. Fenton
Life of this patent
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Abstract
A color photographic silver halide negative working duplicating element and process comprising (A) a magenta colored masking coupler in at least one blue-sensitive photographic silver halide emulsion layer; and (B) a combination of (i) masking couplers and (ii) color contamination of at least one photographic silver halide emulsion layer enables upon exposure and processing of the element formation of a duplicate image that enables formation of a print image that is visually indistinguishable from the original image. The color photographic silver halide duplicating element is useful in forming duplicate images, especially for color motion picture films.
Claims10
A color photographic silver halide negative working duplicating element comprising a support bearing at least one red-sensitive photographic silver halide emulsion layer comprising at least one cyan dye forming coupler that is capable upon exposure and processing of forming a cyan dye;
- at least one green-sensitive photographic silver halide emulsion layer comprising at least one magenta dye forming coupler that is capable, upon exposure and processing, of forming a magenta dye;
- and at least one blue sensitive photographic silver halide emulsion layer comprising at least one yellow dye forming coupler that is capable upon exposure and processing of forming a yellow dye;
- wherein the element additionally comprises
- (A) a magenta colored acetanilide masking coupler in at least one blue-sensitive photographic silver halide emulsion layer, in an amount of 1.25 to 5.00 molar percent of yellow dye forming coupler;
- and
- (B) a combination of (i) masking couplers and (ii) color contaminating coupler in at least one of the blue-sensitive photographic silver halide emulsion layers;
- said negative working duplicating element, upon exposing an original color negative onto a first sample of said negative working duplicating element, and processing, then printing the exposed and processed first sample of said negative working duplicating element onto a second sample of said negative working duplicating element, and processing, then printing the exposed and processed second sample of said negative working duplicating element onto a print film, and processing, will give a print image with colors that are visually indistinguishable from a direct print of the original color negative onto a second, identical, sample of said print film.
Dependencies are inferred from the claim text.