Use of reflecting agent in yellow dye image-providing material layer
AssigneeEastman Kodak Company
InventorDavid P. Brust
Life of this patent
Estimating the term…
Abstract
Photographic elements and diffusion transfer assemblages are described wherein a sufficient amount of a reflecting agent, such as titanium dioxide, is employed in the yellow dye image-providing material layer so that the layer is an effective yellow filter layer for good color reproduction.
Claims22
In a photosensitive element comprising a support having thereon a red-sensitive silver halide emulsion layer having a dye image-providing material associated therewith, a green-sensitive silver halide emulsion layer having a dye image-providing material associated therewith, and a blue-sensitive silver halide emulsion layer having a yellow dye image-providing material associated therewith, the improvement wherein the layer containing said yellow dye image-providing material contains a sufficient amount of a reflecting agent so that the layer is an effective yellow filter layer for good color reproduction, said reflecting agent being photographically inert and white or colorless in the visible region of the spectrum.
In a photographic assemblage comprising:
- (a) a photosensitive element comprising a support having thereon a red-sensitive silver halide emulsion layer having a cyan dye image-providing material associated therewith, a green-sensitive silver halide emulsion layer having a magenta dye image-providing material associated therewith, and a blue-sensitive silver halide emulsion layer having a yellow dye image-providing material associated therewith;
- and
- (b) a dye image-receiving layer,
- the improvement wherein the layer containing said yellow dye image-providing material contains a sufficient amount of a reflecting agent so that the layer is an effective yellow filter layer, said reflecting agent being photographically inert and white or colorless in the visible region of the spectrum.
In an integral photographic assemblage comprising:
- (a) a photosensitive element comprising a transparent support having thereon the following layers in sequence:
- a dye image-receiving layer;
- an alkaline solution-permeable, light-reflective layer;
- an alkaline solution-permeable, opaque layer;
- a stripping layer which enables said dye image-receiving layer to be separated, after processing, from the rest of said assemblage;
- a cyan dye image-providing material layer, a red-sensitive silver halide emulsion layer;
- a magenta dye image-providing material layer, a green-sensitive silver halide emulsion layer;
- a yellow dye image-providing material layer, and a blue-sensitive, silver halide emulsion layer,
- (b) a transparent cover sheet superposed over said blue-sensitive silver halide emulsion layer and comprising a transparent support having thereon, in sequence, a neutralizing layer and a timing layer;
- and
- (c) a rupturable container containing an alkaline processing composition and an opacifying agent, said container being so positioned during processing of said assemblage that a compressive force applied to said container will effect a discharge of the container's contents between said transparent cover sheet and said blue-sensitive silver halide emulsion layer;
- the improvement wherein said yellow dye image-providing material layer contains titanium dioxide, which is present at a concentration of from about 0.1 to about 0.75 gram per square meter of coated element.
Dependencies are inferred from the claim text.