Method of manfacturing substrate for electrophotographic photore

Details Method of manfacturing substrate for electrophotographic photore Method of manfacturing substrate for electrophotographic photore

1997-01-21

1998-03-17

Frahm, Eric

Facsimile and static presentation processing

Facsimile

Recording apparatus

399159, 296021, 298953, H04N 129, G03G 500, H01F 706

Patent

active

057293520

ABSTRACT:
When a metal strip continuously fed and made of stainless-steel, an aluminum alloy or a nickel alloy is bent followed by welding opposite ends of the metal strip to form a pipe and followed by grinding the pipe, the pipe is subjected to heat treatment after the pipe has been welded and before the pipe is ground. Annealing or normalizing adaptable to the type of the metal is selected as the heat treatment. As a result, work hardening can be relieved by the above processes. Moreover, generation of magnetism attributable to martensitic transformation generated in a portion, in which bending stress is concentrated, can be prevented. Thus, work hardening due to the bending operation during the process for forming the pipe can be relieved so that the following grinding operation is performed accurately. Therefore, generation of partial magnetism due to the bending operation can be prevented so that an excellent image can be formed.

REFERENCES:
patent: 5237746 (1993-08-01), Aoki et al.
patent: 5321889 (1994-06-01), Watanabe

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