Patent ID: 9213229
Filing Date: 2015-12-15
Classification: G03C,G03G

Abstract:
1. A positively chargeable electrophotographic photosensitive member comprising a photosensitive layer, wherein the photosensitive layer includes, layered in the stated order, the charge generating-and-transporting layer contains as the electron transport material one or more compounds represented by chemical formulas ET1, ET2, ET3, ET4, ET5, ET7, ET8, and ET9 below, the binder resin contained in the charge transport layer is different from the binder resin contained in the charge generating-and-transporting layer, and from among the binder resins contained in the charge transport layer and the charge generating-and-transporting layer, one of the binder resins contains a polyvinyl acetal resin and the other of the binder resins contains no polyvinyl acetal resin.