Electrophotographic photosensitive member, and electrophotographic apparatus, device unit, and facsimile machine employing the same.

摘要

The present invention relates to an electrophotographic photosensitive member whose photosensitive layer contains specified oxytitanium phthalocyanine and a polyvinyl acetal resin having a structural unit represented by Formula: <CHEM> wherein X is a hydrogen atom, a fluorine atom, a chlorine atom, a bromine atom, a nitro group, or a cyano group; and Y is a fluorine atom, a chlorine atom, a bromine atom, a nitro group, or a cyano group. The photosensitive member maintains a low residual potential without deterioration of the sensitivity during repeated use. <IMAGE>