G - Physics – 03 – G
Patent
G - Physics
03
G
G03G 5/02 (2006.01) B24B 1/00 (2006.01) B24B 5/22 (2006.01) B24B 11/00 (2006.01) B24B 29/04 (2006.01) B24B 39/04 (2006.01) G03G 5/00 (2006.01) G03G 5/10 (2006.01) G03G 15/00 (2006.01)
Patent
CA 2285170
An object of the present invention is to provide a method for manufacturing a mirror surface tube for a photosensitive drum of a copying machine or the like, by which an external surface of an aluminium or aluminium alloy tube can be mirror-processed in a high accuracy without surface defects, and in such a way that good quality required for a photosensitive drum is ensured and dimension accuracy such as roundness and yield in production is improved. In a first step, an aluminium or aluminium alloy tube finished in a predetermined shape and dimension with surface roughness of 10 microns or less is processed by centerless grinding process. In a second step, grinding process is performed using an electrolytic integrated polishing apparatus including a tool electrode mechanism having an elastic grindstone so as to make a mirror surface tube having t:he surface roughness of 2.0 microns or less. Further, preferably, in a third stage, roller burnishing process is performed to finish the surface roughness of 0.5 microns or less.
Akagi Kazuo
Hashimoto Akira
Nakashima Yoshimitu
Kirby Eades Gale Baker
Nissin Unyu Kogyo Co. Ltd.
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