Electrophotography – Image formation – Transfer
Reexamination Certificate
2006-07-10
2009-06-09
Royer, William J (Department: 2852)
Electrophotography
Image formation
Transfer
Reexamination Certificate
active
07546073
ABSTRACT:
There is provided an image forming apparatus including: a photoconductor drum; an intermediate transfer belt that is wrapped around and stretched between the photoconductor drum and a plurality of support rolls and is driven by the photoconductor drum; and a contact member that contacts the intermediate transfer belt, wherein the image forming apparatus satisfies the following expression (1)in-line-formulae description="In-line Formulae" end="lead"?2T(eμθ−1)/(eμθ+1)>Fand T≦396.9 N (1),in-line-formulae description="In-line Formulae" end="tail"?wherein μ represents a coefficient of friction between the photoconductor drum and the intermediate transfer belt, T represents an initial tension of the intermediate transfer belt, θ represents a wrap angle of the intermediate transfer belt on the photoconductor drum, and F represents a load in a tangential direction applied from the contact member to the photoconductor drum via the intermediate transfer belt.
REFERENCES:
patent: 6980760 (2005-12-01), Okamoto et al.
patent: 6980761 (2005-12-01), Yamada
patent: 7313345 (2007-12-01), Inaba et al.
patent: 2003-107843 (2003-04-01), None
Kuriki Iwao
Saeki Tomoya
Saito Kazuhiro
Sato Noribumi
Tanaka Toru
Fuji 'Xerox Co., Ltd.
Royer William J
Sughrue & Mion, PLLC
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