Diffusion transfer photographic materials with color developer scavenger

In a diffusion transfer color photographic process which comprises (1) imagewise exposing a photosensitive element comprising at least one silver halide emulsion layer having associated therewith a non-diffusible dye image forming material which by the oxidative reaction thereof with a primary aromatic amino color developing agent releases a diffusible dye, (2) developing said photosensitive element upon contact with a liquid processing composition in the presence of said color developing agent thereby to form the diffusible dye image and (3) transferring said diffusible dye image to an image receiving element superimposed with said photosensitive element, the improvement wherein said photosensitive element, said image receiving element or said liquid processing composition contains at least one N-.alpha.-sulfoalkylated amino acid represented by the following general formula:

• ##STR21## wherein A represents a hydrogen atom, a hydroxy group, a lower alkyl group having 1 to 5 carbon atoms, an alkyl group having 1 to 5 carbon atoms substituted with a hydroxy group or lower alkoxy group, an alicyclic hydrocarbon group, an aryl group or an aryl group substituted by a lower alkyl group, nitro group, cyano group, alkoxy group, sulfo group, allyloxy group, halogen atom, acyloxy group or alkoxycarbonyl group, B represents a hydrogen atom or the group ##STR22## represents a hydrogen atom, an alkyl group, an aryl group, an aryl group substituted with a sulfo group or carboxy group, R.sub.5 represents a hydrogen atom or a lower alkyl group, and D represents a hydrogen atom or a sulfo group, and Q represents a methylene group, a methylene group substituted with a lower alkyl group, hydroxyalkyl group, lower alkoxyalkyl group, aralkyl group or aryl group, an phenylene group, and a phenylene group substituted with a lower alkyl group, halogen atom, nitro group, lower alkoxy group, sulfo group or carboxy group.