Base drum of electrophotographic photoconductor and method for t

Details Base drum of electrophotographic photoconductor and method for t Base drum of electrophotographic photoconductor and method for t

1992-12-10

1994-06-21

Eley, Timothy V.

Metal working

Method of mechanical manufacture

Roller making

2989533, 72 52, B21D 3902

Patent

active

053218892

ABSTRACT:
A base drum of an electrophotographic photoconductor has a straightness of 0.04 mm or less, a roundness of 0.04 mm or less, a wall-thickness non-uniformity of .+-.0.015 mm or less and a maximum surface roughness (Rmax) in the range from 0.3 to 1.0 .mu.m. This base drum is produced by a method in which a metallic sheet in the form of a drum is welded by a high-frequency welder to form an electroseamed tube, and the electroseamed tube is subjected to the ironing or sinking-ironing process.

REFERENCES:
patent: 3858785 (1975-01-01), McLain
patent: 4480457 (1984-11-01), Moltner
patent: 4577481 (1986-03-01), Staat
patent: 4593550 (1986-06-01), Byrd
patent: 4660754 (1987-04-01), Byrd
patent: 4745787 (1988-05-01), Sansome et al.
patent: 4754908 (1988-07-01), Tanaka et al.
patent: 4796797 (1989-01-01), Nakako et al.
patent: 4805435 (1989-02-01), Sukimoto et al.
patent: 4987046 (1991-01-01), Kutami et al.
patent: 5076084 (1991-12-01), Furugen

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