Photographic direct-positive color process

Claim 1

A PHOTOGRAPHIC DIRECT POSITIVE COLOR PROCESS FOR TREATING AN IMAGE EXPOSED PHOTOGRAPHIC ELEMENT HAVING A SUPPORT WITH SUPERPOSED RED, GREEN AND BLUE LIGHTSENSITIVE SILVER HALIDE EMULSION LAYERS CONTAINING A CYANFORMING COUPLER, A MAGENTA-FORMING COUPLER AND A YELLOW-FORMING COUPLER RESPECTIVELY, AS WELL AS PHYSICAL DEVELOPMENT NUCLEI ADDENDA AND A BLACK-AND-WHITE DEVELOPING AGENT SELECTED FROM THE GROUP CONSISTING OF (A) AA DIFFUSIBLE HYDROQUINONE HAVING AT LEAST ONE AMINO-SUBSTITUTED LOWER ALKYL GROUP, (B) A DIFFUSIBLE CATECHOL HAVING AT LEAST ONE AMINOISUBSTITUTED LOWER ALKYL GROUP, AND (C) A COMBINATION OF (1) A DIFFUSIBLE 3-PYRAZOLIDONE, AND (2) A NONDIFFUSIBLE HYDROQUINONE CONTAINING A PHOTOGRAPHICALLY INERT ORGANIC BALLASTING GROUP OF SUCH MOLECULAR SIZE AND CONFIGURATION AS TO RENDER THE HYDROQUINONE NONDIFFUSIBLE, SAID COUPLERS BEING NONDIFFUSIBLE, CAPABLE OF FORMING DIFFUSIBLE DYES ON REACTION WITH OXIDIZED AROMATIC PRIMARY AMINO COLOR DEVELOPING AGENT, AND HAVING A FORMULA SELECTED FROM THE GROUP CONSISTING OF