Abstract: The sensitometric properties of multicolor diffusion transfer film units may be modified after the photosensitive element has been coated. Sensitometric modification is effected by a photoexposure through a layer of a color correction dye(s). In a preferred embodiment, the color correction dye(s) is bleachable and is contained in a layer over the image-receiving layer.

Abstract: Diffusion transfer films and processes are disclosed wherein the processing composition includes a light-reflecting pigment and a pH-sensitive optical filter agent, and the image-receiving element carries a layer containing a substantially non-diffusible agent adapted to decolorize optical filter agent immediately adjacent the interface between said processing composition and said layer containing said decolorizing agent.

Abstract: Diffusion transfer films and processes are disclosed wherein the processing composition includes a light-reflecting pigment and an optical filter agent, and the image-receiving layer carries over it a layer containing a substantially non-diffusible agent adapted to decolorize optical filter agent immediately adjacent the interface between said processing composition and said decolorizing layer.

Abstract: Diffusion transfer color processes employing dye developers have been found to give improved results by the inclusion in the processing composition of a 5- or 6-membered aromatic unsaturated diazole free of imino nitrogen atoms.

Abstract: Diffusion transfer color processes and products are disclosed employing image-dye providing materials providing magenta image dyes having the chromophoric system represented by the formula ##STR1## wherein each R is the same or different and is an alkyl group, and each X is the same or different and is hydrogen or an alkyl group (including substituted alkyl). The dye image-providing material includes a diffusion control moiety, such as a hydroquinonyl group, and may be diffusible or nondiffusible as a function of the diffusion control moiety.

Abstract: A relatively thin, flat or planar battery is disclosed which includes one or more cells in series relationship each comprising a planar anode in superposed relationship with a planar cathode and a separator disposed intermediate and extending substantially coextensive the facing surfaces of the anode and cathode possessing marginal portions and an aqueous electrolyte permeable central portion. Each cell includes an aqueous electrolyte disposed in the central portion of the separator and in contact with the facing surfaces of both the anode and the cathode and an electrically nonconducting polyacrylate sealant extending intermediate and providing adhesive contact between the marginal portions of the separator and next adjacent facing surfaces.

Abstract: Volume dielectric holograms are prepared by methods which have in common the intra-emulsion diffusion transfer of silver atoms within the emulsion by a process of dissolving undeveloped silver halide, and diffusing and precipitating said dissolved silver on precipitation sites provided by the development of the exposed silver halide. The resulting metallic silver is then rehalogenated to substantially reconstitute the original silver halide volume of the emulsion.

Abstract: Translucent screens are provided comprising a dispersion of starch particles in a continuous polymeric phase.

Abstract: Photosensitive substituted-halide silver halide emulsions are prepared by substituting bromide and/or iodide anions for part of the chloride anions of a silver iodochloride emulsion. These substituted-halide silver halide emulsions are particularly useful as negative working silver halide emulsions in diffusion transfer processes.

Abstract: Translucent screens are provided comprising a dispersion of low index of refraction particles dispersed in a continuous polymeric phase of a higher index of refraction material.

Abstract: Spectacles are provided which comprise lenses having a transparent substrate upon which a continuous transparent metallic layer is vapor deposited. Coated thereover is a continuous layer of a dielectric material which is an odd multiple of one-quarter wavelength of a reference color in thickness.

Abstract: Benzoyl peroxide compounds containing reactive substituents are used to initiate the formation of telechelic polymers.

Abstract: A planar primary battery particularly suited for photographic application characterized in exhibiting high current drain capacities and improved manufacturability. The battery structure incorporates at least one electrode present in aqueous slurry form as a particulate dispersion of active material and poly(2-acrylamido-2-methylpropanesulfonic acid) in combination with electrolyte.

Abstract: Diffusion transfer photographic products and processes involving film units having an anti-light piping capability so that the film units can be exposed in a dark chamber of a camera, withdrawn from the dark chamber while distributing an opaque processing composition between elements of the unit to protect the unit from further exposure and transported into light before distribution of the opaque processing composition is complete.

Abstract: Microscopic capsules comprising a nucleus surrounded by a film-forming polymeric layer having a substantially continuous light-reflecting metallic coating thereover.

Abstract: Color diffusion transfer products and processes are provided incorporating light-sensitive photographic emulsions comprising silver halide grains having an iodide content of about 0.2 to 1.5 mole percent and a mean volume diameter of about 0.05 to 2 .mu., the grain size distribution thereof exhibiting a coefficient of variatin of less than about 35 percent. Preferably, the iodide content of the halide emulsion is about 0.625 percent, the mean volume diameter is about 0.9 to 1.2 .mu., and the coefficient of variation is less than 30 percent. The reamining halides in the grains may be bromide or bromide and chloride. The silver halide emulsions are prepared by single jet techniques.

Abstract: An ophthalmic device comprising superposed pairs of light polarizing elements, one pair of such elements being fixed and the other pair being rotatable with respect to the fixed pair to provide a variable light transmission feature. The fixed pair of elements is retained by a frame member having an arcuate peripheral portion which engages a rotatable light polarizing element biasing means which is fixedly attached to each rotatable light polarizing element and prevents substantial axial movement of the rotatable light polarizing element.

Abstract: An ophthalmic device comprising superposed pairs of light polarizing elements, one pair of such elements being fixed and the other pair being rotatable with respect to the fixed pair to provide a variable light transmission feature, both immediately adjacent surfaces of the superposed elements comprising a continuous coating of a hydrophobic material.

Abstract: Diffusion transfer integral film units are provided having a flare-reducing layer adjacent or contiguous the photosensitive silver halide layer(s).

Abstract: Transparent elements useful as supports for photographic image-carrying and/or image-recording layers are provided comprising a polyester film base having an anti-reflection coating on one surface. Image-carrying and/or image-recording layers may be coated on the opposed surface.The polyester film base of the transparent element has an index of refraction of at least 1.6, and the anti-reflection coating comprises a fluorinated polymer and has an optical thickness of a quarter wave. An isocyanate in the anti-reflection coating or between said coating and the polyester film base increases the abrasion resistance of the fluorinated polymer anti-reflection coating.