Photographic film unit with taps on binding element

Claim 1

In a diffusion transfer photographic film unit adapted to be processed to form a visible image by moving the film unit between pressure applying members to distribute a processing composition from the leading end to the trailing end thereof, said film unit comprising: a photosensitive element; an image receiving element in face to face relationship with said photosensitive element thereby forming an assembly having a leading and trailing end joined by lateral edges; a quantity of processing composition releasably contained along the leading end of said assembly for distribution between said photosensitive and said image receiving elements in response to movement of said elements between a pair of pressure-applying members; a trap having a leading and trailing edge affixed along the trailing end of said assembly for retaining excess processing composition; and a binding element extending around at least the trailing end and lateral edges of the assembly and securing the photosensitive and image-receiving elements to one another in order to retain said sheets in superposition and prevent escape of processing composition from between the sheets wherein said binding element comprises an exposure aperture for exposing said photosensitive sheet therethrough, said exposure aperture comprising a leading and trailing edge; the improvement which comprises two tabs integral with said binding element, each of which is folded immediately adjacent a lateral edge of said film at a point adjacent and inboard the leading edge of the trap; and whereby an increase in thickness of the binder element of the film unit is achieved adjacent the leading edge of the trap.