| 摘要 |
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.
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