ELECTROPHOTOGRAPHIC MATERIAL PHOTOCONDUCTIVE LAYER Russian patent published in 1996 - IPC

FIELD: photographic materials. SUBSTANCE: photoconductive layer of electrophotographic material consists of low-molecular organic photoconducting agent, organic electron acceptor and binding agent. Organic photoconducting agent is a compound of the formula where X - NR (R - alkyl, aryl, aralkyl), O, S, CH₂. Electron acceptor and binding agent is at least one organic solvent-soluble polyimide of the formula where - tetravalent residue of aromatic hydrocarbon, aromatic heterocycle, aromatic compound containing not above 4-th aromatic rings involving fused one; - one of divalent card groups of the following structure: (X - O, NR′; R′ - H, aryl); ; (X - O, S, CO); (R″′ - aryl); (X - S, NR″; R″ - H, aryl); at the following ratio of components, wt.-%: organic photoconducting agent 20-70, and soluble polyimide 30-80. EFFECT: enhanced photosensitivity, strength and film-forming properties.