Abstract: A transparency film assemblage for use with a camera includes a mount with an aperture therethrough. A film frame have a photosensitive layer is bonded to the mount in a position to cover the aperture. Secured to the mount is a foil sheet folded upon itself to form a moisture impermeable envelope. Within said envelope is a foraminous pad impregnated with developing liquid. Following exposure of the film frame the envelope is opened, the pad is laminated to the photosensitive layer of the film frame and the foil sheet is refolded to encompass the mount, pad and film frame in a light impermeable envelope suitable to be ejected from the camera while film developing continues.

Abstract: The present invention is directed to a color diffusion transfer film unit comprising a transparent support carrying on a first side at least a first photosensitive silver halide emulsion layer having dye image-providing material associated therewith, a substantially opaque layer, a reflective layer and a dye image-receiving layer; said transparent support carrying on a second side a layer initially transparent to radiation actinic to said silver halide emulsion, said initially transparent layer adapted to convert an opaque layer upon contact with alkali which prevents transmission of exposing radiation to said silver halide emulsion layer wherein said photosensitive silver halide emulsion layer is intermediate said initially transparent layer and said opaque layer.

Abstract: A photosensitive element comprising a support carrying a layer of photosensitive silver halide grains and a barrier polymer, said barrier polymer having a limited swell ratio in alkali; said barrier polymer being disposed substantially intermediate said silver halide grains and overlying said silver halide grains. In a preferred embodiment, the silver halide layer is a planar, spaced array of silver halide grains.