Fixing device and image forming apparatus

Details Fixing device and image forming apparatus Fixing device and image forming apparatus

2006-03-21

2009-02-10

Gray, David M (Department: 2852)

Electrophotography

Image formation

Fixing

C399S330000

Reexamination Certificate

active

07489896

ABSTRACT:
A fixing device (30) has a fixing member (30) adapted to be heated by induction heating based on a magnetic field from an induction coil (34). A pressing member (40) is disposed in contact with the fixing member (30) to define therebetween a nip zone (N) for passing a sheet (P) therethrough. The fixing member includes a heating layer (32). The heating layer (32) has a temperature-sensitive metal layer (321) and formed on the side of the induction coil (34), and a nonmagnetic metal layer (322) laminated onto the temperature-sensitive metal layer (321). The nonmagnetic metal layer is made of aluminum as a metal having a low specific resistance, and formed to have a thickness (50 μm) allowing the nonmagnetic metal layer to be substantially free from a temperature rise due to the induction heating.

REFERENCES:
patent: 6605802 (2003-08-01), Nagahira
patent: 6795679 (2004-09-01), Shimizu et al.
patent: 2004/0105708 (2004-06-01), Imai et al.
patent: 9-127810 (1997-05-01), None
patent: 2004-151470 (2004-05-01), None

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