Abstract:
DIFFUSION OF UNDESIRABLE IMAGE-FORMING MATERIALS TO THE IMAGE-RECEIVING ELEMENT OF A MULTICOLOR DIFFUSION TRANSFER PHOTOGRAPHIC PRODUCT IS INHIBITED BY INCORPORATING IN SUCH PRODUCT AN IMAGE-FORMING MATERIAL IMPERMEABLE LAYER BETWEEN THE IMAGE-RECEIVING ELEMENT AND THE NEXT ADJACENT SILVER HALIDE EMULSION LAYER SUBSEQUENT TO SUBSTANTIAL IMAGE FORMATION.
Abstract:
The present invention relates, in general, to a permanently structured composite photographic film unit, adapted to provide a color diffusion transfer image, which includes an opaque layer; a photosensitive silver halide layer having associated dye transfer image-forming material; a processing composition permeable layer comprising a particulate dispersion of visible light-reflecting inorganic pigment possessing a first mean particle size, which transmits actinic radiation incident on the layer effective to expose the photosensitive silver halide layer, and which dispersion upon contact with alkaline processing composition provides a dispersion of the pigment possessing a second mean particle size, effective to reflect incident actinic radiation and to thereby mask dye transfer image-forming material associated with the photosensitive silver halide layer; a polymeric layer dyeable by the dye transfer image-forming material; a transparent layer; and a rupturable container retaining alkaline processing composition for distribution between the dyeable polymeric layer and next adjacent photosensitive silver halide layer.
Abstract:
Tertiary organic phosphines containing a hydroxyl and/or an amino-substituted phenyl group are used as silver halide developing agents in photographic processing compositions which find particular utility in diffusion transfer photographic techniques.