| 摘要 |
A fixing device of the present invention includes a pressure roller and a peeling roller both of which press a heat roller. The pressure roller is disposed upstream to the peeling roller in a transport direction of a recording paper. An outer diameter of the heat roller, an outer diameter of the pressure roller, and an outer diameter of the peeling roller decrease in this order. With this arrangement, it is possible to realize a fixing device which achieves a reduced size and reduced power requirements, while ensuring a fixing property and a peeling property with respect to a recording medium. Further, with an arrangement in which the pressure roller and the peeling roller which press the heat roller are disposed so that, in a cross section orthogonal to central axes of the heat roller, the pressure roller, and the peeling roller, a first orthogonal line being orthogonal to a first line that connects a center of the heat roller and a center of the pressure roller and passing through a nip portion between both of the rollers, comes into contact with a contact area in a predetermined area on a peripheral surface of the peeling roller, a fixing device of the present invention can transport the recording paper without causing a paper jam when plural pieces of recording paper stacked are transported. |
