Electrophotographic photoreceptor cylindrical extrusion original tube, and a method of manufacturing the same, and a method of manufacturing electrophotographic photoreceptor cylindrical substrate, and electrophotographic photosensitive drum

摘要

PPROBLEM TO BE SOLVED: To provide a cylindrical substrate for an electrophotographic photoreceptor, which is suitable for full-color image formation with high picture quality that requires high dimensional accuracy, and which can be inexpensively manufactured, and to provide a cylindrical extruded raw pipe for the electrophotographic photoreceptor, to be used for the manufacture of the cylindrical substrate. PSOLUTION: The cylindrical extruded raw pipe for the electrophotographic photoreceptor is obtained by extruding an aluminum billet, wherein at least one surface selected form the inner face and the outer face of the cylindrical extruded raw pipe for the electrophotographic photoreceptor has at least one concave part linearly formed in the longitudinal direction of the raw pipe for the electrophotographic photoreceptor or at least one convex part linearly formed in the longitudinal direction of the raw pipe for the electrophotographic photoreceptor. PCOPYRIGHT: (C)2010,JPO&INPIT