Abstract: Method of treating a dye image in photographic material which dye image has been formed by the color coupling reaction of a primary aromatic amine color developing agent with a phenolic color coupler of the formula ##STR1## where T is hydroxy or amino, one of R.sub.1 and R.sub.3 is the coupling position and if it is the coupling position the substituent group is hydrogen or halogen, a nitrogen-linked heterocycle or a mercapto group, the other of R.sub.1 and R.sub.3 and R.sub.2 and R.sub.4 are each hydrogen or halogen or optionally substituted organic groups, or one or R.sub.1 and R.sub.2 together or R.sub.2 and R.sub.3 together may represent the atoms necessary to complete a benzannelated ring, which treatment method comprises treating the dye image with an aqueous solution which comprises a salt of a transition (b-sub group) metal, the concentration of the metal ion in the aqueous solution being at least 10.sup.-4 M.

Abstract: A process for the photographic development of a light sensitive system is provided wherein photographic material having a layer comprising a photosensitive silver salt is imagewise exposed and the silver salt is imagewise developed in an acid processing solution by use of a 1,4-diazine compound reduced at most to the dihydro stage, wherein the said reduced diazine compound is produced during the development process from a 1,4-diazine or a 1,4-diazine-N-oxide by electrolytic reduction.