Preparation of photographic direct positive color images

Claim 1

A COLOR PHOTOGRAPHIC DIFFUSION TRANSFER PROCESS WHICH COMPRISES EXPOSING TO A VISIBLE SUBJECT A PHOTOGRAPHIC ELEMENT COMPRISING A SUPPORT WITH SUPERPOSED RED, GREEN AND BLUE LIGHT-SENSITIVE DIRECT POSITIVE HYDROPHILIC COLLOID SILVER HALIDE EMULSION LAYERS WHEREIN THE SILVER HALIDE FORMS LATENT IMAGES PREDOMINANTLY INSIDE THE SILVER HALIDE GRAINS AND HAVING DISPOSED INTEGRAL WITH SAID ELEMENT AND CONTIGUOUS TO SAID EMULSIONS A CYAN-FORMING COUPLER, A MAGNETA-FORMING COUPLER AND A YELLOW-FORMING COUPLER, SAID COUPLERS BEING NONDIFFUSIBLE DURING DEVELOPMENT IN THE PRESENCE OF AN ALKALINE COLOR DEVELOPING COMPOSITION CONTAINING AN AROMATIC PRIMARY AMINO COLOR DEVELOPING AGENT, CAPABLE OF FORMING DIFFUSIBLE ACID DYES SUBSTANTIALLY COMPLEMENTARY TO THE COLOR OF THE SPECTRAL SENSITIVITY OF THE RESPECTIVE CONTIGUOUS LIGHT-SENSITIVE LAYERS IN SAID ALKALINE COLOR DEVELOPING COMPOSITION BY REACTION WITH COLOR DEVELOPMENT OXIDATION PRODUCT OF SAID COLOR DEVELOPING AGENT AND HAVING A FORMULA SELECTED FROM THE GROUP CONSISTING OF DYE-LINK-(COUP-BALL)N AND BALL-LINK-(COUPSOL) N WHEREIN: (1) DYE IS A DYE RADICAL EXHIBITING SELECTED ABSORPTION IN THE VISIBLE SPECTRUM AND CONTAINING AN ACIDIC SOLUBILIZING GROUP; (2) LINK IS CONNECTING RADICAL SELECTED FROM THE GROUP CONSISTING OF AN AZO RADICAL, A MERCURI RADICAL, AN OXY RADICAL, AN ALKYLIDENE RADICAL, A THIO RADICAL, A DITHIO RADICAL AND AN AZOXY RADICAL; (3) COUP IS A COUPLER RADICAL SELECTED FROM THE GROUP CONSISTING OF A 5-PYRAZOLONE COUPLER RADICAL, A PHENOLIC COUPLER RADICAL AND AN OPEN-CHAIN KETOMETHYLENE COUPLER RADICAL, SAID COUP BEING SUBSTITUTED IN THE COUPLING POSITION WITH SAID LINK; (4) BALL IS A PHOTOGRAPHICALLY INERT ORGANIC BALLASTING RADICAL OF SUCH MOLECULAR SIZE AND CONFIGURATION AS TO RENDER SAID COUPLERS NONDIFFUSIBLE DURING DEVELOPMENT IS SAID ALKALINE COLOR DEVELOPING SOLUTION; (5) SOL IS SELECTED FROM THE GROUP CONSISTING OF A HYDROGEN ATOM AND AN ACIDIC SOLUBILIZING GROUP WHEN SAID COLOR DEVELOPING AGENT CONTAINS AN ACIDIC SOLUBILIZING GROUP, AND SOL IS AN ACIDIC SOLUBLIZING GROUP WHEN SAID COLOR DEVELOPING AGENT IS FREE OF AN ACIDIC SOLUBILIZING GROUP; AND (6) N IS AN INTEGER OF 1 TO 2 WHEN SAID LINK IS AN ALKYLIDENE RADICAL, AND N IS 1 WHEN SAID LINK IS A RADICAL, SELECTED FROM THE GROUP CONSISTING OF AN AZO RADICAL, A MERCURI RADICAL, AN OXY RADICAL, A THIO RADICAL, A DITHIO RADICAL AND AN AZOXY RADICAL; WETTING SAID ELEMENT WITH SAID ALKALINE COLOR DEVELOPING COMPOSITION AND REVERSAL DEVELOPING SAID EMULSIONS IN THE PRESENCE OF A FOGGING COMPOSITION, SAID COUPLERS COUPLING WITH OXIDATION PRODUCT OF SAID COLOR DEVELOPING AGENT DURING SAID COLOR DEVELOPMENT AND THEREBY CLEAVING SAID LINK IN SAID COUPLERS RELEASING DIFFUSIBLE ACID DYE IMAGES IN AREAS OF THE SAID DEVELOPMENT, DURING THE COURSE OF SAID COLOR DEVELOPMENT SAID DYE IMAGES DIFFUSING IMAGEWISE IN REGISTER TO A JUXAPOSED RECEPTION LAYER CONTAINING A MORDANT FOR ACID DYES AND THEREBY PRODUCING A POSITIVE COLOR REPRODUCTION OF SAID SUBJECT, SAID FOGGING COMPOSITION COMPRISING AN ETHYLENE BIS (PYRIDINIUM) SALT AND A NITROGEN-CONTAINING COMPOUND SELECTED FROM THE GROUP CONSISTING OF A HYDRAZINE, A 3-HYDROXY TETRONIMIDE AND A 3,4,5-TRIHYDROXY-5,6-DIHYDRO-2-PYRONIMIDE.