Film units for photography of diffusive transfer process type

A film unit for photography of the diffusive transfer process type, which comprises a cover sheet and a photosensitive sheet, said photosensitive sheet including a plurality of laminated layers each taking part in a self-processing photographic function, said cover sheet and said photosensitive sheet having applied therebetween, a mask defining an image border definition with an aperture provided therein, a pod member containing therewith a processing liquid and being capable of releasing said processing liquid when subjected to pressure, a trap member capable of retaining therewith the surplus processing liquid after the diffusive transfer process, and a pair of spacers for use in regulating the thickness of the processing liquid to be discharged over said photosensitive sheet, the improvement wherein at least a partial portion of said photosensitive sheet underlying said image border definition comprises at least one dried dummy liquid layer extending inside or lying flush to a relative definition area corresponding to the image border definition which takes no part in the self-processing photographic function and which prevents the occurence of stripes, black dots or black dashes in the periphery of the image area.