| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a fixing apparatus always maintaining the uniformity of the heat of a fixing belt in its width direction, so as to recover the whole of the fixing belt to uniform temperature immediately, even when the temperature of the fixing belt in its width direction is partially decreased. <P>SOLUTION: The fixing apparatus according to an embodiment includes: a first roller 50; a second roller 60 that forms a nip between the second roller 60 and the first roller 50 and pressurizes a sheet passing through the nip against the first roller; a third roller 70 that is disposed in parallel with the first and the second rollers; a fixing belt 80 that is trained about the first and the third rollers; a heater 90 that uniformly heats the fixing belt in a direction of a width of the fixing belt; and a heat-uniformizing member that is a shaft-shaped heat-uniformizing member embedded in the third roller. An effective length in a longitudinal axial direction of the heat-uniformizing member is set to be the same or greater than a width of a prescribed maximum sheet so as to uniformly distribute heat of the fixing belt which is in contact with the third roller in the longitudinal axial direction. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
