Electrophotography – Having particular structure – Modular or displaceable
Reexamination Certificate
2007-08-01
2010-02-02
Gray, David M (Department: 2852)
Electrophotography
Having particular structure
Modular or displaceable
C399S162000, C399S164000, C399S165000, C399S302000, C399S303000, C399S308000, C399S312000, C399S313000
Reexamination Certificate
active
07657207
ABSTRACT:
An image forming apparatus includes a developing unit which develops toner to form an image, a transfer unit which transfers the image onto a printing medium, and a fusing unit to fuse the image transferred onto the printing medium, wherein the transfer unit includes a belt, a plurality of rollers which rotatably supports the belt, and a belt tension applying unit which moves a first roller of the plurality of rollers between a belt tension release position at which a tension of the belt releases and a belt tension applying position at which the tension of the belt applies by the interlocking motion between the belt tension applying unit and a second roller of the plurality of rollers.
REFERENCES:
patent: 5991575 (1999-11-01), Okiyama et al.
patent: 6269231 (2001-07-01), Castelli et al.
patent: 2002/0094213 (2002-07-01), Yamamoto et al.
patent: 2001-022188 (2001-01-01), None
patent: 2003-173090 (2003-06-01), None
patent: 2005-4507 (2005-01-01), None
European Search Report mailed on Mar. 4, 2008.
Bonnette Rodney
Gray David M
Samsung Electronics Co,. Ltd.
Stein McEwen, LLP
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