Fusing device and image forming apparatus using the same

Details Fusing device and image forming apparatus using the same Fusing device and image forming apparatus using the same

2007-10-02

2010-12-28

Tran, Hoan (Department: 2884)

Electrophotography

Image formation

Fixing

Reexamination Certificate

active

07860443

ABSTRACT:
A fusing unit provided in a printing path of an image forming apparatus to fuse an image transferred onto a printable medium, the fusing unit including a heat source; a heating roller of which a surface is heated by heat generated by the heat source; a plurality of pressing rollers which is provided opposite to the heating roller and presses a supplied printable medium in cooperation with the heating roller; a fusing pressing belt which is wound on the plurality of pressing rollers and forms a fusing nip contacting with the heating roller; and a supporting unit which rotatably supports the plurality of pressing rollers and guides the fusing pressing belt, a surface hardness hPof at least one of the plurality of pressing rollers is greater than or equal to a surface hardness hHof the heating roller.

REFERENCES:
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patent: 6975829 (2005-12-01), Aruga
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Office Action issued Aug. 14, 2009 in corresponding Chinese Patent Application No. 200710161935.8.

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