Fixing apparatus

Electrophotography – Image formation – Fixing

Reexamination Certificate

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Details

C219S619000, C399S328000

Reexamination Certificate

active

07424259

ABSTRACT:
A fixing apparatus that enables the calorific value of a heat-producing rotating element to be stabilized and the heat production efficiency of that heat-producing rotating element to be improved. A fixing apparatus (200) is equipped with a heat-producing sleeve (210), an induction heating apparatus (230), a magnetic field absorption member (233) that absorbs a magnetic field generated by the induction heating apparatus (230), and a fixing roller (240) and pressure roller (250) that grip and rotate the heat-producing sleeve (210). The magnetic field absorption member (233) is located in an area opposite an exciting coil (231) with the heat-producing sleeve (210) between, and absorbs a magnetic field generated by the induction heating apparatus (230). The heat-producing sleeve (210) is composed of a nonmagnetic metallic material of thickness in the range from 10 μm to 500 μm and specific resistance of 80×10−6Ωcm or less.

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English Language Abstract of JP 10-074007, Mar. 17, 1998.
English Language Abstract of JP 2004-145368, May 20, 2004.
English Language Abstract of JP 2002-148983, May 22, 2002.
English Language Abstract of JP 2002-328550, Nov. 15, 2002.
English Language Abstract of JP 7-319312, Dec. 8, 1995.
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English language Abstract of WO 03/039198, May 8, 2003.
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English langauge Abstract of JP 2000-268952, Sep. 29, 2000.
English lanuage Abstract of JP 62-150371, Jul. 04, 1987.

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