Patent ID: 8331820

Claim:
A fixing device for fixing a toner image on a recording sheet, comprising: a first heat source; a second heat source; a rotatable fixing member heated by the first heat source and having a width greater than a maximum width of the recording sheet accommodated by the fixing device; a rotatable pressing member heated by the second heat source and contacting the fixing member to form a fixing nip therebetween at which a toner image on a recording sheet passing therethrough is fixed thereto, the pressing member having a width greater than the width of the fixing member; and at least first and second temperature detectors configured to determine temperatures of different surface portions of the pressing member, the first temperature detector determining a temperature of a first surface portion of the pressing member, which is contacted with the recording sheet when the recording sheet is fed to the fixing nip, and the second temperature detector determining a temperature of a second surface portion of the pressing member, which is not contacted with the fixing member even when the pressing member is rotated.