G - Physics – 03 – G
Patent
G - Physics
03
G
96/68
G03G 9/12 (2006.01) G03C 5/30 (2006.01)
Patent
CA 2026606
-0- PHOTOGRAPHIC DEVELOPING SOLUTION FOR USE WITH FORE-HARDENED X-RAY FILMS Abstract of the Disclosure An aqueous alkaline photographic developing solution that is especially adapted for use in the development of fore-hardened X-ray films has a pH in the range of 9 to 12, is substantially free of both aldehydic hardening agents and silver halide solvents, and comprises (1) a dihydroxybenzene developing agent, such as hydroquinone, (2) at least 3.5 grams per liter of developing solution of a 4,4-disubstituted-1-aryl- 3-pyrazolidinone, which functions as an auxiliary super-additive developing agent, such as 4-hydroxy- methyl-4-methyl-1-phenyl-3-pyrazolidinone, (3) an alkaline agent, (4) an organic antifoggant, and (5) a preservative. The developing solution is capable of being packaged as a single part formulation and provides a very short process time and excellent sensitometric results.
Brayer Franklin C.
Cumbo Peter E.
Fitterman Alan S.
Brayer Franklin C.
Cumbo Peter E.
Eastman Kodak Company
Fitterman Alan S.
Gowling Lafleur Henderson Llp
LandOfFree
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