Silver image bleaching solution and process
AssigneeEastman Kodak Company
InventorsAnthony M. Barnett, Colin J. Gray, Jeffrey K. Green, David A. Hallbery, Julie Baker
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Abstract
A deletion fluid for use with lithographic printing plates comprising a silver image formed by the silver salt diffusion transfer process is comprised of an aqueous solution containing iodine, an iodide salt and a surfactant which comprises both polyalkyleneoxy units and a quaternary ammonium group.
Claims6
A deletion fluid for lithographic printing plates comprising a silver image formed by the silver salt diffusion transfer process, said deletion fluid comprising an aqueous solution containing 2 to 50 grams per liter of iodine, 50 to 250 grams per liter of iodide ions and from 1 to 10% by weight of a surfactant which comprises both polyalkyleneoxy units selected from ethylenoxy and propyleneoxy units and a quaternary ammonium group.
Dependencies are inferred from the claim text.