摘要:
ELECTROPHOTOGRAPHIC ELEMENTS COMPRISED OF A SUPPORT, AN ELECTRICALLY CONDUCTING LAYER, A NOVEL BARRIER LAYER AND A PHOTOCONDUCTIVE INSULATING LAYER. THE NOVEL BARRIER LAYERS ARE FORMED OF BLOCK COPOLYCARBONATES HAVE ONE RECURRING UNIT CONTAINING AN ALKYLIDENE DIARYLENE MOIETY AND ANOTHER RECURRING UNIT CONTAINING AN OXYTETRAMETHYLENE MOIETY THESE BARRIER LAYERS HAVE IMPROVED ADHESION WITH CONTIGUOUS LAYERS.
摘要:
A substantially protein free receiving layer for use in a photographic diffusion transfer process comprises silver precipitants and a colloid binder comprising at least 90 percent, by weight, of a copolymer of (1) about 90 percent to about 98 percent, by weight, of at least one haloalkyl methacrylate in which the haloalkyl group contains 1 to 10 carbon atoms with (2) about 2 percent to about 10 percent, by weight, of an unsaturated polymerizable organic acid having three to six carbon atoms. The layer can also contain toning and/or processing compounds.