Self developing-film unit
AssigneePolaroid Corporation
InventorsPhilip R. Norris, Harry R. Parsons, William T. Plummer, Donald W. Preissler, Robert J. Wadja
Life of this patent
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Abstract
There is described a self-developing film unit which has a photosensitive member and an image-receiving member and wherein one outermost surface of the film unit comprises a support layer carrying a layer of a releasable material and a layer of an adhesive material. After an image is formed in the film unit by photoexposure of the photosensitive element and photographic processing of the exposed photosensitive element, the support and releasable material layer can be removed and the film unit or the image-receiving element, as the case may be, adhered to a surface for viewing of the image.
Claims16
A self-developing diffusion transfer photographic film unit comprising
- a first support carrying at least one silver halide emulsion layer,
- a second sheet-like element which is in superposed relationship, or adapted to be placed in superposed relationship with said photosensitive element,
- an image-receiving element positioned in one of said photosensitive or second sheet-like elements,
- means providing an aqueous alkaline processing composition for distribution between predetermined layers of said elements;
- and arranged adjacent the surface of said first support remote from said silver halide emulsion layer or adjacent the surface of said second sheet-like element remote from said silver halide emulsion layer, in succession, a layer of an adhesive material, a first layer of a release material, a second support, and a second layer of a release material adjacent the surface of said second support remote from said first release material layer.
Dependencies are inferred from the claim text.