Fixing apparatus

Details Fixing apparatus Fixing apparatus

2004-10-05

2008-09-09

Lee, Susan S (Department: 2852)

Electrophotography

Image formation

Fixing

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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