Processing color photographic materials
AssigneeAgfa-Gevaert
InventorsUdo Quilitzsch, Herbert Mitzinger
Life of this patent
Estimating the term…
Abstract
The processing of exposed colour photographic materials by at least the steps of colour developing and bleach-fixing, with electrolytic desilvering of the spent bleach fixative solution, results in better utilisation of the processing chemicals and in a reduced amount of liquid to be disposed of, when bleach-fixing is effected in 2 steps, wherein a pH of .gtoreq.7.4 is set in the 1st step and a pH of .ltoreq.7 is set in the 2nd step, the bleach fixative from the 1st step is electrolytically desilvered and acid for maintaining the pH is fed to the 2nd step.
Claims5
A method of processing exposed colour photographic materials by at least the steps of colour developing and bleach-fixing, characterised in that bleach-fixing is effected in 2 steps, wherein a pH of .gtoreq.7.4 is set in the 1st step and a pH of .ltoreq.7 is set in the 2nd step, the bleach fixative from the 1st step is regenerated and is electrolytically desilvered, and acid for maintaining the pH is fed to the 2nd step.
Dependencies are inferred from the claim text.