ELECTROPHTOGRAPHIC MATERIALS Russian patent published in 1996 - IPC

FIELD: photographic materials. SUBSTANCE: invention relates to a material comprising electroconducting carrier and polymer photosensitive layer applied onto this carrier and consisting of a soluble polyimide of general formula where n = 10-500, X is CO or O, and sensibilizer. Higher sensibility to incandescent lamp light and to monochromatic light with a wavelength in the range 550 to 700 nm is achieved when sensibilizer is a dye selected from the group of triarylmethane, phthalocyanine, indigoid, nitro, azo, and tiazine dyes, and amount of sensibilizer is 1-6 mol % in respect to monomer unit of polyimide. In particular, the following dyes were approved: rhodamine 6G, Bengal rose, fluoresceine, malachite green, phthalocyanine vanadyl, etioporhyrin, 5,7,5', 7'-tetrabromoindigo, 2,4,6-trinitrophenol, methyl red, Congo red, methylene blue. EFFECT: increased sensitivity.