VARMEF¦LSOMT KOPIERINGSARK MED STORT EKSPONERINGSSPILLEROM OG FREMGANGSM}TE TIL DETS FREMSTILLING.

摘要

1358614 Wide latitude heat-sensitive material containing ferric and silver soaps MINNESOTA MINING & MFG CO 10 March 1972 [10 March 1971] 11435/72 Heading G2C A material has a visibly heat-sensitive layer comprising a mixture of ferric and silver soaps of fatty acids, the silver soap representing 10-80 per cent by weight of the mixture, at least one phenolic co-reactant for the soaps in the heat-sensitive or an adjacent layer and a toner for the silver image. The heat-sensitive layer may contain a polymeric film-forming binder and be coated on a transparent support. The ferric soap may be ferric stearate and the silver soap may be silver behenate. The phenolic co-reactant may be pyrogallic acid, catechol, protocathechuic acid, azelayl, pyrogallic acid, azelayl bis-pyrogallic acid, methyl gallate or behenoyl pyrogallol. The toner may be phthalazinone. The material has superior exposure latitude.