Radiation imagery chemistry: process – composition – or product th – Nonradiation sensitive image processing compositions or... – Developer
Patent
1996-06-28
1997-12-30
Le, Hoa Van
Radiation imagery chemistry: process, composition, or product th
Nonradiation sensitive image processing compositions or...
Developer
430440, 430446, 430465, 430480, 430483, G03C 530
Patent
active
057028753
ABSTRACT:
A black-and-white developing composition includes as ascorbic acid developing agent, an auxiliary super-additive developing agent, borate buffer and a preservative. The composition pH is from 7 but less than 9. The composition can be formulated from two separately packaged parts that may be in dry or liquid form. The borate buffer is present to maintain the desired pH, and the two developing agents are present in desired molar ratios for optimal developing activity. Improved photographic properties are obtained while avoiding the use of environmentally unfriendly dihydroxybenzenes.
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Research Disclosure, pub. 37152, Mar., 1995.
Opitz Robert John
Zawadzki Silvia
Eastman Kodak Company
Le Hoa Van
Tucker J. Lanny
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