Electrophotography – Having particular structure – Modular or displaceable
Reexamination Certificate
2009-01-08
2010-12-07
Gray, David M (Department: 2852)
Electrophotography
Having particular structure
Modular or displaceable
C399S315000
Reexamination Certificate
active
07848677
ABSTRACT:
The image forming apparatus according to the present invention has: a transfer unit including an intermediate transfer medium that circularly moves; plural image forming sections provided in parallel with each other from an upstream side to a downstream side along a circulation direction of the intermediate transfer medium, the plural image forming sections each having a photosensitive drum; plural transfer rollers provided in the transfer unit so as to face the photosensitive drums of the plural image forming sections, respectively; and a charge removal means including plural charge removal members respectively provided adjacent to the transfer rollers, to remove electric charges charged on the intermediate transfer medium, with a clearance maintained between the intermediate transfer medium and the plural charge removal members, the clearance being narrowed gradually from the upstream side toward the downstream side along the circulation direction.
REFERENCES:
patent: 6243555 (2001-06-01), Herrick et al.
patent: 11-237794 (1999-08-01), None
patent: 2002-072615 (2002-03-01), None
patent: 2005-308784 (2005-11-01), None
Do Andrew V
Gray David M
Kabushiki Kaisha Toshiba
Toshiba Tec Kabushiki Kaisha
Turocy & Watson LLP
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