Image fusing apparatus using carbon nano-tube heater

摘要

An image fusing apparatus includes a heating belt including a resistance heating layer, an insulating layer formed on an inner surface of the resistance heating layer, and a release layer formed on an outer surface of the resistance heating layer; a heating supporting roller disposed (positioned) inside the heating belt and rotating with the heating belt; a pressing roller disposed (positioned) parallel to the heating supporting roller and in contact with the outer surface of the heating belt to form a nip; and an electricity supplying member to supply electricity to the resistance heating layer of the heating belt. A thickness of paper non-contact areas of opposite side end portions of the resistance heating layer of the heating belt is the same as or thicker than the thickness of a paper contact area of a middle portion of the resistance heating layer thereof.

主权项

1. An image fusing apparatus comprising:
a heating belt including a resistance heating layer, an insulating layer formed on an inner surface of the resistance heating layer, and a release layer formed on an outer surface of the resistance heating layer; a heating supporting roller positioned inside the heating belt and rotating with the heating belt; a pressing roller positioned parallel to the heating supporting roller and to be in contact with the outer surface of the heating belt to form a nip; and an electricity supplying member to supply electricity to the resistance heating layer of the heating belt, wherein a thickness of paper non-contact areas of opposite side end portions of the resistance heating layer of the heating belt is the same as or thicker than the thickness of a paper contact area of a middle portion of the resistance heating layer thereof, wherein the resistance heating layer is formed so that carbon nano-tubes on which metal as a conductive filler is doped are dispersed in a silicon rubber or a polyamide of an elastic member, wherein the electricity supplying member is positioned on opposite ends of the heating supporting roller to supply electricity to the resistance heating layer, wherein the electricity supplying member is formed in a cap shape to wrap one end of the heating supporting roller, and wherein the cap shape electricity supplying member is supplied with electricity by a brush that is positioned in contact with the cap shape electricity supplying member in an axial direction of the heating supporting roller.