Method of manufacturing a bleach composition for processing a color photographic material
AssigneeFuji Hunt Photographic Chemicals, Inc.
InventorHaixing Wan
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Abstract
The present invention relates to methods useful for processing a color photographic material. A method of manufacturing a ferric 1,3-PDTA complex is provided. The method includes reacting ferrous bromide with unchelated 1,3-PDTA, thereby forming a ferrous 1,3-PDTA complex; and conducting an oxidation process wherein the ferrous 1,3-PDTA complex is converted to the ferric 1,3-PDTA complex. Also provided is a method of processing a silver halide color photographic material.
Claims21
A method of manufacturing a ferric 1,3-PDTA complex, comprising:
- a) reacting ferrous bromide with unchelated 1,3-PDTA, thereby forming a ferrous 1,3-PDTA complex;
- and
- b) conducting an oxidation process wherein the ferrous 1,3-PDTA complex is converted to the ferric 1,3-PDTA complex.
A method of processing a silver halide color photographic material, comprising:
- a) forming a bleach composition containing a bleaching agent by a method comprising the steps of:
- i) reacting ferrous bromide with unchelated 1,3-PDTA, thereby forming a ferrous 1,3-PDTA complex;
- and
- ii) conducting an oxidation process wherein the ferrous 1,3-PDTA complex is converted to a ferric 1,3-PDTA complex;
- and
- b) contacting the bleach composition with the silver halide color photographic material.
Dependencies are inferred from the claim text.