Direct photographic bleach-fixing replenishment using ferrous bleach-fixing precursor composition

The present invention relates to a method of using a single-part photographic bleach-fixing precursor composition for direct replenishment of a photographic bleach-fixing solution in the processing of photographic silver halide materials. In particular, this invention relates to the use of a single-part bleach-fixing precursor composition comprising predominantly ferrous-ligand complexes. Photographic bleach-fixing solutions in a processing chamber can be directly replenished using a single-part photographic bleach-fixing "precursor" composition that comprises one or more iron-ligand complexes, one or more thiosulfates as the sole fixing agents, and optionally, a sulfite preservative. At least 50 mol % of the iron in the composition is in the form of Fe(II). Immediately prior to or during directly supplying the precursor composition to the processing chamber from an enclosed container, sufficient ferrous ions are converted to ferric ions to provide desired bleaching in the processing chamber.