Patent ID: 7236733

Claim:
A heat generating apparatus for use in a heating apparatus, comprising: coil members arranged along an axis extending in a longitudinal direction of a heat generating member, and located outward of the heat generating member; a central shaft in which core materials are made from ferrite and an outer circumference is coated with resin or non-ferrous metal, the central shaft being provided to extend along the axis, the core materials being arranged in positions corresponding to gaps between the coil members; an elastic body formed to be a predetermined thickness at a circumference of the central shaft; a conductor layer formed to be a predetermined thickness at a circumference of the elastic body; and a second elastic body formed to be a predetermined thickness at a circumference of the conductor layer wherein the ferrite material of the central shaft is divided into a plurality of portions in a longitudinal direction, a first subset of said plurality of divided portions being ferrous (Fe), a second subset of said plurality of divided portions being ferrite.