Process for the preparation of colour images

Claim 1

A PHOTOGRAPHIC PROCESS FOR PREPARING A DIRECT POSITIVE COLOUR IMAGE WHICH COMPRISES THE STEPS OF: (1) EXPOSING TO A COLOURED OBJECT A PHOTOGRAPHIC ELEMENT CONTAINING A RED-SENSITIVE SILVER HALIDE EMULSION LAYER, A GREEN-SENSITIVE SILVER HALIDE EMULSION LAYER AND A BLUE-SENSITIVE SILVER HALIDE EMULSION LAYER, AND RED-SENSITIVE SILVER HALIDE EMULSION LAYER CONTAINING A COLOURLESS NAPHTHOL COLOUR COUPLER AND IN EFFECTIVE CONTACT THEREWITH A COLOURLESS QUINOLONE4 HYDRAZONE COMPOUND, THE GREEN-SENSITIVE SILVER HALIDE EMULSION LAYER CONTAINING A COLOURLESS NAPHTHOL COLOUR COUPLER AND IN EFFECTIVE CONTACT THEREWITH A COLOURLESS 4-METHYL-QUINOLENE-2-HYDRAZONE COMPOUND, THE BLUE-SENSITIVE EMULSION LAYER CONTAINING A COLOURLESS 3-ACYLAMINOPYRAZOLONE-5 COLOUR COUPLER AND IN EFFECTIVE CONTACT THEREWITH A COLOURLESS 4-METHYL-QUINOLONE-2 HYDRAZONE COMPOUND, (2) DEVELOPING THE PHOTOGRAPHIC ELEMENT WITH AN AROMATIC PRIMARY AMINO DEVELOPING AGENT, (3) TREATING THE PHOTOGRAPHIC ELEMENT IN AN ALKALINE OXIDATIVE BLEACHING BATH CONTAINING POTASSIUM FERRICYANIDE, (4) TREATING THE PHOTOGRAPHIC ELEMENT IN AN ACID SOLUTION HAVING A PH OF AT LEAST 1, (5) FIXING THE PHOTOGRAPHIC ELEMENT TO PRODUCE: COLOURLESS REACTION PRODUCTS AT THE PLACES WHERE DEVELOPMENT OCCURRED, AND A POSITIVE COLOUR IMAGE OF THE OBJECT TO BE REPRODUCED AS A RESULT OF OXIDATIVE COUPLING OF COLOUR COUPLER STILL PRESENT AFTER DEVELOPMENT WITH THE RESPECTIVE HYDRAZONE COMPOUND IN EFFECTIVE CONTACT THEREWITH.