Fixing device for use in an image forming apparatus

Details Fixing device for use in an image forming apparatus Fixing device for use in an image forming apparatus

2007-10-16

2007-10-16

Ngo, Hoang (Department: 2852)

Electrophotography

Diagnostics

Fixing

C399S328000, C219S619000

Reexamination Certificate

active

11017660

ABSTRACT:
A fixing device has a fixing belt, a trembler coil for heating the fixing belt with magnetic flux, a ferrite core around which the trembler coil is wound, and a heater for heating the ferrite core. The ferrite core has a Curie temperature which is between a fixing temperature of the fixing belt and a smoking start temperature of the fixing belt. The heating of the ferrite core with the heater allows the temperature of the ferrite core to reach the Curie temperature before the temperature of the fixing belt reaches a smoking start temperature. Thereby, an excessive rise in temperature of the fixing belt is suppressed, which prevents the fixing belt from smoking and igniting.

REFERENCES:
patent: 08-286542 (1996-11-01), None
patent: 2001-023767 (2001-01-01), None
patent: 2001-318545 (2001-11-01), None
Official Action issued by the Japanese Patent Office on Aug. 22, 2006 in priority application No. 2004-309203, and English translation thereof.

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