The fixing apparatus includes: a fixing member having base and conductive
layers and fixing a toner onto a recording medium when the conductive
layer is heated by electromagnetic induction; a magnetic field generating
member generating an alternating-current magnetic field crossing the
conductive layer; and a magnetic field inducing member arranged so as to
face the magnetic field generating member across the fixing member, and
inducing the magnetic field into itself or allowing the magnetic field to
go through the member. The base layer and the magnetic field inducing
member each contain a material having a magnetic permeability change
onset temperature in a range from not less than a heating preset
temperature of the fixing member to not more than a heatproof temperature
of the fixing member. A thickness of the base layer is smaller than a
skin depth of the layer at the heating preset temperature of the fixing
member.