Alkaline black-and-white developer for silver halide...

Details Alkaline black-and-white developer for silver halide... Alkaline black-and-white developer for silver halide...

G - Physics

03

C

G03C 5/30 (2006.01) G03C 5/305 (2006.01) G03C 5/46 (2006.01)

Patent

CA 2064934

Alkaline Black and White Developer for Silver Halide Photographic Material ABSTRACT OF THE DISCLOSURE The present invention relates to an alkaline aqueous black-and-white photographic developer composition com- prising: (1) at least one black-and-white developing agent, (2) at least one black-and-white auxiliary developing agent, (3) at least one antifoggant, (4) at least one sequestering agent, (5) a sulfite antioxidant, (6) at least one buffering agent, (7) a tone agent, and (8) at least one tone promoting agent, wherein said tone agent is a primary organic amine compound and said tone promoting agent is a silver halide solvent.

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