Dry silver systems

Details Dry silver systems Dry silver systems

G - Physics

03

C

G03C 1/498 (2006.01)

Patent

CA 2112247

2112247 9304398 PCTABS00020 Certain fluoran dyes have been found to be effective reducing agents for silver ion in dry silver constructions. The fluoran dyes have structure (a) wherein R1 represents methyl or n-butyl; R2 represents n-butyl or cyclohexyl; R3 represents hydrogen, methyl, or methoxy; and R4 represents (b) or (c) where X represents halogen (preferably chlorine); and (d) a binder.

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