Patent ID: 6690906
Filing Date: 2004-02-10
Classification: G03G

Abstract:
A fixing apparatus for fixing a toner image formed on a transfer sheet comprising:a rotatable heating member comprised of a first thermo-conductive base material, a first heat-resistive resilient layer disposed over the outer surface of the first thermo-conductive base material, and a first heat-resistive releasing layer disposed over the first heat resistive resilient layer; a heat source provided at the interior of the first thermo-conductive base material to heat the rotatable heating member; and a rotatable pressure member to nip and transport the transfer sheet between the rotatable pressure member and the rotatable heating member, comprised of a second thermo-conductive base material, a second heat-resistive resilient layer disposed over the outer surface of the second thermo-conductive base material and a second heat-resistive releasing layer disposed over the second heat-resistive resilient layer; wherein, hardness of each of the surface of the first and the second heat-resistive releasing layers measured by a micro hardness meter is 55 to 75Â°, and surface roughness Rz of each of the surface of the first and the second heat-resistive releasing layers is 0.5 to 2.0 &mgr;m.