| 摘要 |
PROBLEM TO BE SOLVED: To provide a fixing device that can blow cooling air uniformly to a pressure member irrespective of the performance of air blowers constituting cooling means for the pressure member, and can suppress an ununiform change in the outer dimension of the pressure member.SOLUTION: A fixing device includes at least a fixing member, a pressure member 4, cooling means for cooling the pressure member 4, and temperature measurement means 7 for measuring the surface temperature of the pressure member 4, and passes a recording medium through a nip part formed between the fixing member and the pressure member 4 to fix an unfixed toner image. The cooling means comprises a plurality of air blowers 6 arranged in the longitudinal direction of the pressure member 4, and an air blowing duct 5 having channels of the cooling air blown from the air blowers 6 defined therein. The amount of air blown from the air blowers 6 is adjusted according to the surface temperature of the pressure member 4 measured by the temperature measurement means 7, and the opening area of an air outlet port 50 of the air blowing duct 5 is smaller than the opening area of a connection part 60 between the air blowing duct 5 and the air blowers 6. |
