| 摘要 |
PURPOSE:To obtain a laminated electrophotographic receptor which has high sensitivity and has less residual charge even after use by providing an undercoating layer, electric charge generating layer and electric charge transport layer respectively contg. electric charge transport materials on a conductive substrate. CONSTITUTION:Electric charge transport materials are incorporated in all of an undercoating layer, charge generating layer and charge transport layers in a laminated electrophotographic receptor having said undercoating layer, charge generating layer and charge transport layers on a conductive substrate. If the charge transport materials contained in said undercoating layer and charge generating layers are the same as the charge transport material used in the charge transport layer, the effect is much remarkable. The hole transport materials among the charge transport materials used for the charge transport layer are N- ethyl carbazole, P-diethyl aminobenzaldehyde, etc. The charge transport materials are 2,7-dinitrofluoren; 2,4,8-trinitrothioxanthon; tetracyanoethylene, etc. |
