Patent ID: 8892017

Claim:
A fixing device comprising: a magnetic-field generating unit that generates a magnetic field; a substantially cylindrical fixing rotational body that is arranged to face the magnetic-field generating unit, generates heat by electromagnetic induction of the magnetic field, melts a developer image, and fixes the developer image to a recording medium; a temperature-sensitive contact part that contacts an inner side of the fixing rotational body, and is arranged to face the magnetic-field generating unit, a permeability of the temperature-sensitive contact part decreasing if a temperature of the temperature-sensitive contact part becomes a permeability-change start temperature or higher; and a temperature-sensitive non-contact part that is arranged at the inner side of the fixing rotational body to face the magnetic-field generating unit in a range different from a range of the temperature-sensitive contact part, and is spaced from the fixing rotational body, a permeability of the temperature-sensitive non-contact part decreasing if a temperature of the temperature-sensitive non-contact part becomes a permeability-change start temperature or higher, wherein an angle defined by the temperature-sensitive contact part and the center of the fixing rotational body is 60° or larger, wherein the temperature-sensitive contact part includes a plurality temperature-sensitive contact portions, and wherein the temperature-sensitive non-contact part is disposed between two of the lurality of temperature-sensitive contact portions.