METHOD OF MANUFACTURING ELECTROPHOTOGRAPHIC MATERIAL FOR MICROFILMING Russian patent published in 1998 - IPC

FIELD: light-sensitive materials. SUBSTANCE: sensitive layer containing sensitizer and polyimide with general formula , where n= 10-500 and X is oxygen, carbonyl, sulfone group, or isopropyl, is applied on conducting support. Sensitive layer is then covered with fixed layer from solution of polymer, selected from the following group: butyl methacrylate/methacrylic acid copolymer, polyvinylbutyral, polyvinyl alcohol, in methyl ethyl ketone or ethanol at polymer to solvent weight ratio (3.0-9.5):(90.5-97.0) and viscosity of solution 3.1-34.0 centistoke. Finally, layer is dried at 60-65 C. EFFECT: improved quality of material because of reduced dark drop of potential and increased strength of image fixation. 2 tbl