In a fixing device for an image forming apparatus, a heat roller includes a hollow cylindrical base, a heating layer formed of strip-like fibers implementing desired power consumption, and a parting layer provided on the outer periphery of the heating layer with the intermediary of an electrical insulating...http://www.google.com/patents/US6122479?utm_source=gb-gplus-sharePatent US6122479 - Fixing device for an image forming apparatus and fixing roller for the same
