Patent ID: 6136516
Filing Date: 2000-10-24
Classification: G03C,Y10S

Abstract:
Process for processing exposed photographic silver halide materials at least comprising the stages color development, stopping, bleaching and fixing using a bleaching bath with hydrogen peroxide as the active substance, and the stop bath contains as a buffer agent at least one carboxylic acid of the formulae I to VIII in whichR.sub.1 to R.sub.5 mutually independently mean hydrogen, --OH, --COOM, --SO.sub.3 M, --PO(OM).sub.2, an optionally substituted alkyl residue, an optionally substituted aryl residue, an optionally substituted amino residue or a heterocyclic residue andM means hydrogen or an alkyli metal atom and wherein at least one further acid group is present in the molecule,HOOC--CH.sub.2 --COOH, (II)HOOC--CH.dbd.CH--COOH, (III) ##STR9## and at least one agent which stops development.