| 摘要 |
PURPOSE:To obtain an electrophotographic receptor having high initial acceptance potential, high photosensitivity, no induction development, high speed of drop of charged potential in the course of its drop after exposure, and stable characteristics for a long time, by attaching 2,5-bis(4'-diehtylaminophenyl)-1,3,4- oxadiazole (DEPO) to copper phthalocyanine through adsorption or vapor deposition, or the like to give a powder, dispersing this powder into a soln. contg. a polymer compd., such as polyvinylcarbazole, and a binder resin, and using this dispersion as a photosensive coating. CONSTITUTION:DEPO having formulaIand copper phthalocyanine are dispersed into ethanol using ultrasonic waves, this dispersion is filtered by suction and dried by substituting an atmosphere for nitrogen to give a copper phthalocyanine powder adsorbing DEPO. A phtosensitive coating liquid is prepared by adding this powder together with polyvinyl carbazole and polyester to tetrahydrofuran and mixing them with stirring. An electrophotographic receptor is prepared by coating this on a conductive substrate of an aluminum plate. |
