Electrophotography – Image formation – Development
Reexamination Certificate
2004-10-08
2008-11-11
Gray, David M (Department: 2852)
Electrophotography
Image formation
Development
C399S279000
Reexamination Certificate
active
07450892
ABSTRACT:
An electrophotographic developing roller in which air tightness and electrical conductivity in a fit section between a cylindrical metal base body and a metal flange are satisfactory and outside diameter deflection accuracy is satisfactory; and an electrophotographic developing roller which is relatively inexpensive, excellent in mechanical rigidity, surface processability and plating film formation (corrosion resistance) and capable of being satisfied with a prescribed dimensional accuracy are provided. The electrophotographic developing roller is a developing roller having a cylindrical metal base body and a metal flange. The metal flange has a larger diameter section to be fitted in the opening end inner surface of the cylindrical metal base body and a smaller diameter section serving as a central shaft body coaxial with the cylindrical metal base body. The fit section surface of the larger diameter section before being press fitted has an uneven shape such that a maximum surface roughness Ry due to a circumferential groove formed by cutting processing is from 25 μm to 70 μm.
REFERENCES:
patent: 5842962 (1998-12-01), Yamada et al.
patent: 5970294 (1999-10-01), Narita et al.
patent: 6122473 (2000-09-01), Goseki et al.
patent: 6438841 (2002-08-01), Fuma et al.
patent: 57-086869 (1982-05-01), None
patent: 60-143605 (1985-07-01), None
patent: 02-054287 (1990-02-01), None
patent: 07-261438 (1995-10-01), None
patent: 08-074839 (1996-03-01), None
patent: 08-184977 (1996-07-01), None
patent: 11-216621 (1999-08-01), None
patent: 11-249416 (1999-09-01), None
patent: 2001-125370 (2001-05-01), None
patent: 2001-221227 (2001-08-01), None
patent: 2003-091198 (2003-03-01), None
patent: 2003-263019 (2003-09-01), None
patent: 2004-109525 (2004-04-01), None
Matsuzawa Shinji
Tsubota Toshio
Fuji Electric Imaging Device Co. Ltd.
Gray David M
Kanesaka Manabu
Roth Laura K
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