Patent ID: 6783439
Filing Date: 2004-08-31
Classification: B24B,G03G,Y10S,Y10T

Abstract:
The method of manufacturing mirror surface tubes for an external surface of a photosensitive drum, comprising the steps of:preparing a long sized aluminium or aluminium alloy tube finished in a predetermined shape and dimension with a surface roughness of 10 microns or less; cutting the tube into a predetermined length; performing a centerless grinding process on the cut tube; polishing the centerless-ground tube, to form said external surface of the cylinder, with an electrolytic integrated polishing apparatus including a tool electrode mechanism having a special elastic grindstone so as to finish the surface roughness of 2.0 microns or less; and performing a roller burnishing process on the aluminium or aluminium alloy tube having the surface roughness of 2.0 microns or less, using a plurality of burnishing rollers arranged on a circle so as to finish the surface to a roughness of 0.5 microns or less.