Regeneration of photographic silver bleach solution

Claim 1

IN THE PROCESS OF BLEACHING A SILVER IMAGE CONTAINED IN A PHOTOGRAPHIC EMULSION LAYER WHICH ALSO CONTAINS A DYE IMAGE, SAID PROCESS COMPRISING TREATING THE SILVER IMAGE WITH A SOLUTION CONTAINING ABOUT 50 TO 150 GRAMS PER LITER OF FERRICYANIDE AND A SOLUBLE HALIDE WHEREBY THE SILVER IN THE SILVER IMAGE IS OXIDIZED TO SILVER IONS WHICH COMBINE WITH THE HALIDE IONS OF THE SOLUTION AND FORM A SILVER HALIDE IN THE EMULSION AND A RELATIVELY SMALL AMOUNT OF THE FERRICYANIDE IS REDUCED TO FERROCYANIDE, AND THEN TREATING THE PARTIALLY SPENT BLEACHING SOLUTION WHICH CONTAINS FERRICYANIDE, FERROCYANIDE AND A HALIDE WITH A REGENERATING AGENT, THE IMPROVEMENT WHICH CONSISTS IN ADDING, AS SAID REGENERATING AGENT, A SUBSTANTIALLY WATER FREE HALOGEN SELECTED FROM THE GROUP CONSISTING OF BROMINE AND CHLORINE, TO THE SOLUTION IN SUBSTANTIALLY THE AMOUNT REQUIRED TO CONVERT THE FERROCYANIDE CONTENT OF THE SOLUTION INTO FERRICYANIDE AND TO INCREASE THE SOLUABLE HALIDE IN THE SOLUTION TO SUBSTANTIALLY ITS ORIGINAL CONTENT WITHOUT GIVING THE REGENERATED SOLUTION A FREE HALOGEN CONTENT.