Radiation imagery chemistry: process – composition – or product th – Nonradiation sensitive image processing compositions or... – Fixer
Patent
1995-12-29
1997-05-13
Le, Hoa Van
Radiation imagery chemistry: process, composition, or product th
Nonradiation sensitive image processing compositions or...
Fixer
430453, 430459, G03C 538
Patent
active
056291388
ABSTRACT:
The present invention provides a fixer composition and a method of processing an exposed photographic silver halide element comprising the steps of developing by means of a developer comprising a silver halide developing agent and treating the developed element with a fixer composition, wherein the fixer composition comprises a silver halide solvent, a sulfite ion source, an aluminum salt hardening agent, a buffering agent, a sequestering agent and an .alpha.-ketocarboxylic acid compound in an amount of more than 2 grams per liter corresponding to the formula:
REFERENCES:
patent: 5298382 (1994-03-01), Toyoda et al.
patent: 5401621 (1995-03-01), Kojima et al.
"Reducing the Evolution of Sulphur Dioxide from Photographic Fixing Baths," Research Disclosure, Feb., 1977, p. 5, No. 15407.
Faranda Filippo
Marchesano Carlo
Moizo Elda
Evearitt Gregory A.
Imation Corp
Le Hoa Van
Litman Mark A.
Musser Arlene K.
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