Radiation imagery chemistry: process – composition – or product th – Nonradiation sensitive image processing compositions or... – Hardener
Patent
1991-04-12
1994-01-11
Le, Hoa Van
Radiation imagery chemistry: process, composition, or product th
Nonradiation sensitive image processing compositions or...
Hardener
430436, 430441, 430451, 430464, 430478, 430486, G03C 5305
Patent
active
052780350
ABSTRACT:
A non-hydroquinone and non-alkali metal hydroxide containing developer composition for radiographic materials and a method of use thereof are provided. The developer composition comprises a developer selected from the group consisting of ascorbic acid and sugar-type derivatives thereof, stereoisomers and diastereoisomers of ascorbic acid and its sugar-type derivatives, their salts and mixtures thereof, together with a sulfite, a 3-pyrazolidone compound, and an anti-swelling agent selected from the group consisting of sodium sulfate, glutaraldehyde or mixtures thereof, said composition having a pH of from 9.5 to 10.6, and said developer being present in an amount of at least about 15 grams, said sulfite being present in an amount of from 2 to 50 grams, said swelling control agent being present in an amount of from 35 to 90 grams, and water to 1.0 liter.
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