| 摘要 |
A fixing device having an endless fixing belt configured to convey a sheet-like medium on which a toner image is to be fixed, heating and fixing rollers having the fixing belt wound thereon, and a pressing roller disposed opposite to the fixing roller having fixing belt wound thereon to form a nip portion between the fixing belt and pressing roller. The fixing device also including first to third heaters provided in the heating, pressure and fixing rollers respectively, and first to third voltage applying devices configured to apply voltages to the first to third heaters respectively. The nip portion is configured to perform the fixing only by pressure contact between said fixing and pressing rollers via said fixing belt.
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