| 摘要 |
PROBLEM TO BE SOLVED: To prevent heat transfer in a nip-forming member from being hindered when the nip-forming member quickly dissipates the heat excessively increased at an end toward the inside thereof, the heat being generated when a recording medium smaller than a heat-generation distribution of a heat source passes in a row.SOLUTION: A fixing apparatus includes: a nip-forming member and a heater arranged in a fixing belt; a pressure roller which comes into contact with the nip-forming member via the fixing belt, to form a nip with the fixing belt; and a stay arranged on a surface of the nip-forming member, opposite the pressure roller, to support the nip-forming member which receives load of the pressure roller, from a rear surface. The nip-forming member is formed of a plurality of layers different in thermal conductivity. In the nip-forming member, thermal conductivity in a longitudinal direction of a fixing member is different from that in a direction orthogonal to a recording medium conveyance direction. The thermal conductivity in at least one of the layers is different in the longitudinal direction of the fixing member. A layer of the nip-forming member in contact with the stay has higher thermal conductivity than the stay. |
