BLACK SOLUTION FOR SILVER EDUCATION AND PROCEDURES

摘要

PCT No. PCT/EP92/01883 Sec. 371 Date Apr. 20, 1993 Sec. 102(e) Date Apr. 20, 1993 PCT Filed Aug. 18, 1992 PCT Pub. No. WO93/04401 PCT Pub. Date Mar. 4, 1993.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.