Method of processing photographic silver dye bleach materials

Details Method of processing photographic silver dye bleach materials Method of processing photographic silver dye bleach materials

C - Chemistry, Metallurgy

07

F

96/54, 260/613,

C07F 9/50 (2006.01) C07F 9/54 (2006.01) G03C 7/02 (2006.01) G03C 7/28 (2006.01)

Patent

CA 1087629

Abstract of the Disclosure A method of processing photographic silver dye bleach materials which have been exposed imagewise is provided. The process steps are (1) silver developing, (2) dye bleaching, (3) silver bleach- ing and (4) fixing. The treatment baths for the process steps (2), (3) and (4), or the combined treatment baths useful for process step (3) with at least one the process steps (2) or (4) contain water-soluble tertiary phosphines as silver ligands. These phosphines effect an acceleration of the dye and silver bleaching and they are further suitable stabilizers and optionally antioxidants which yield stable treatment baths

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