Bleach bath
AssigneeAgfa-Gevaert
InventorsRalf Wichmann, Thomas Hübsch, Thomas Stetzer
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AssigneeAgfa-Gevaert
InventorsRalf Wichmann, Thomas Hübsch, Thomas Stetzer
Estimating the term…
A bleach or bleach/fixing solution for processing photographic silver halide materials which, relative to the silver halide content of the unprocessed material, exhibit prior to the bleaching step a content of silver arising from development of at least 65 mol %, in particular for processing color reversal materials, characterized in that the solution contains at least one iron complex of propylenediaminetetraacetic acid or of β-alaninediacetic acid or a mixture of these complexes and the total concentration of the stated iron complexes in the solution is at least 0.045 and at most 0.25 mol/l and a process for processing, in which such a solution is used, is characterized by a small introduced quantity of iron complexes, a low residual silver content, a low bleaching fog value, elevated resistance to precipitation and in that the bleach solution may be rejuvenated.
A color reversal process for processing silver halide materials comprising a bleaching step, wherein said bleaching step is performed using a solution which contains at least one iron complex of propylenediaminetetraacetic acid and the total concentration of the stated iron complex in the solution is at least 0.045 and at most 0.25 mol/l wherein prior to the bleaching step, the process comprises at least the steps:
Dependencies are inferred from the claim text.