Patent ID: 7636527

Claim:
A fuser apparatus comprising: a fuser member having an endless contact surface to be brought into contact with each of successively transported recording media and a non-contact surface so as not to be brought into contact with the recording medium, the fuser member being arranged to apply heat to the recording medium from the contact surface to fix a toner on the recording medium; a heating member which is energized to supply heat to the contact surface; a contact surface temperature detecting member for detecting a temperature of the contact surface; a non-contact surface temperature detecting member for detecting a temperature of the non-contact surface which is increased by heat conduction from the contact surface; and an energization controlling member for controling energization power of the heating member; wherein, when the contact surface temperature rises toward a predetermined temperature, the energization controlling member controls the heating member energization power so that the heating member energization power is reduced as a difference between the non-contact surface temperature and the contact surface temperature decreases.