Developer compositions for silver halide photographic materials

Details Developer compositions for silver halide photographic materials Developer compositions for silver halide photographic materials

G - Physics

03

C

96/61

G03C 5/26 (2006.01) G03C 5/305 (2006.01)

Patent

CA 1264976

Abstract of the Disclosure Developer compositions for silver halide photographic materials having an improved resistance to air oxidation, even if in the presence of metal ion traces, comprise the following principal constituents: a) hydroquinone or a substituted hydro- quinone; b) an auxiliary superadditive developing agent; c) an alkali metal sulfite; d) an organic antifoggant agent; e) inorganic alkali agents; f) an alkanolamine; and g) a sequestering agent selected in the group of diethylenetriaminepentacetic acid, 1,3-diamino-2-propanoltetracetic acid and 1-hydroxyethylidene- 1,1'-diphosphonic acid.

463575

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