Method of manufacturing a bleach composition for processing...

Radiation imagery chemistry: process – composition – or product th – Nonradiation sensitive image processing compositions or... – Process of preparing composition from plural preformed...

Reexamination Certificate

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C430S393000, C430S430000

Reexamination Certificate

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06919170

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.

REFERENCES:
patent: 5093228 (1992-03-01), Nakamura
patent: 6534253 (2003-03-01), Kuykendall et al.
patent: 6582893 (2003-06-01), Vincent et al.
patent: 2004/0185390 (2004-09-01), Vincent et al.
patent: 3800270 (1989-07-01), None
Research Disclosure, Sep. 1997, pp. 613-650.

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