Fixing apparatus and image forming apparatus using it

Details Fixing apparatus and image forming apparatus using it Fixing apparatus and image forming apparatus using it

2007-09-28

2010-11-30

Porta, David P (Department: 2884)

Electrophotography

Image formation

Fixing

Reexamination Certificate

active

07844210

ABSTRACT:
According to an aspect of the present invention, there is provided a fixing apparatus including: a heat roller that includes: a heat source that generates heat to be supplied on a toner image formed on a recording medium; a cylindrical core; a rubber layer that is formed on the cylindrical core and includes a thermal-conductivity-enhanced rubber, the rubber layer having a thickness of Tg that satisfies 200 μm≦Tg≦600 μm and having a rubber hardness defined by JIS-A hardness of Hg that satisfies 40 degrees≦Hg≦80 degrees; and a fluororesin layer that is formed on the rubber layer, the fluororesin layer having a thickness of Tj that satisfies 80 μm≦Tj≦300 μm and 2 Tj≦Tg≦10 Tj; and a pressure roller that presses the recording medium against the heat roller.

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patent: 2006-18075 (2006-01-01), None
German Office Action dated Oct. 30, 2008 with English-Language Translation.

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