Color photographic material
AssigneeCiba-Geigy Corporation
InventorNorman C. Haylett
Life of this patent
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AssigneeCiba-Geigy Corporation
InventorNorman C. Haylett
Estimating the term…
A process for the production of an improved photographic image is provided which comprises imagewise exposing photographic material which comprises on a support base at least one light-sensitive negative-working silver halide emulsion layer containing a color coupler (receptor layer) and in which after color processing a negative dye image only is formed, there being associated therewith at least one light-sensitive negative-working silver halide emulsion layer containing at least one DIR compound (development inhibitor releasing compound) and in which after processing no photographic image is present (donor layer), developing the photographic material in a color photographic developing solution to form a negative silver image in the layer which comprises the DIR compound and a coupled compound with the DIR compound in the areas in which the silver has been developed, so releasing the DI compound imagewise from the DIR compound and allowing the DI compound to diffuse imagewise into the layer containing the color coupler thereby to modify color development in this layer by forming a modified negative silver image and hence a modified negative dye image in the layer which comprises the color coupler, and further processing the material so that no photographic image is present in the layer which comprises the DIR compound and no silver image is present in the layer which comprises the color coupler and the dye image.
A process for the production of a photographic image which comprises imagewise exposing photographic material which comprises on a support base at least one light-sensitive negative working silver halide emulsion layer containing a colour coupler and in which after colour processing a negative dye image only is formed, there being associated therewith at least one light-sensitive negative-working silver halide emulsion containing at least one DIR compound and in which after processing no photographic image is present, developing the photographic material in a colour developing solution to form a negative silver image in the layer which comprises the DIR compound and a coupled compound with the DIR compound in the areas in which the silver has been developed, so releasing the DI compound imagewise from the DIR compound and allowing the DI compound to diffuse imagewise into the layer containing the colour coupler thereby to modify colour development in this layer by forming a modified negative silver image and hence a modified negative dye image in the layer which comprises the colour coupler, and further processing the material so that no photographic image is present in the layer which comprises the DIR compound and no silver image is present in the layer which comprises the colour coupler and the dye image.
Photographic material which comprises on a support base at least one light-sensitive negative working silver halide emulsion layer containing a colour coupler and in which after processing a photographic dye image only is formed, there being associated therewith at least one light-sensitive negative working silver halide emulsion layer in which after processing no photographic dye image is formed and which comprises at least one DIR compound which after reaction with the oxidation products of a colour developer releases a DI compound and forms a substantially colourless product.
Dependencies are inferred from the claim text.