Film unit comprising an image receiving element and light intercepting

Abstract

A silver salt diffusion transfer photographic film unit suitable for exposing a photosensitive element in a camera and processing the exposed photosensitive element in a bright place outside the camera. The film unit includes a photosensitive element having a silver halide emulsion layer, an image-receiving element having an image-receiving layer containing silver precipitating nuclei, a light-shielding element to protect the silver halide emulsion layer from ambient light during the development of the film unit in a bright place outside the camera, a container retaining an alkaline processing solution which is rupturable by means of a pressure applying member and positioned to allow the processing solution to spread into a clearance between the emulsion layer of the photosensitive element and the image-receiving layer of the image-receiving element in the form of a layer, a light-reflecting material in an amount sufficient to form a white background for a transferred silver image which is positioned between the image-receiving layer and the emulsion layer or is introduced between the image-receiving layer and the emulsion layer when the processing solution is spread, and a silver halide developer. The image-receiving element and the light-shielding element are juxtaposed in such a manner that the image-receiving layer is faced inward and are fixed at at least one edge thereof to form a composite structure having an opening through which the photosensitive element is introduced between the image-receiving element and the light-shielding element in such a manner that the emulsion layer faces the image-receiving layer. The photosensitive element is imagewise exposed in the camera, introduced through the opening into the composite structure, and passed through a pressure applying member for rupturing the alkaline processing solution container.