Electrophotographic image bearer, process cartridge and image forming apparatus using the image bearer

摘要

An electrophotographic image bearing unit including a belt-form electrophotographic photoreceptor including an electroconductive substrate and a photosensitive layer located overlying the substrate and optionally a protective layer located overlying the photosensitive layer; and a pressing member which presses the photoreceptor while a surface of the pressing member contacts a surface of the photosensitive layer side of the photoreceptor such that the photoreceptor has a U-form portion, wherein the pressing member is rotated by the photoreceptor, wherein the surface of the photosensitive layer side of the photoreceptor has a static friction coefficient less than a static friction coefficient of the surface of the pressing member.