| 摘要 |
PROBLEM TO BE SOLVED: To hold the temperature of the hot air inside a roller as much as possible to prevent a reduction in heating efficiency, and prevent the deformation of the roller due to a change in pressure inside the roller.SOLUTION: A fixing roller 1 according to the present invention having a hollow structure heated by a heat source 6 provided on the outside, and includes a ventilation hole 8 that allows the ventilation in one direction and the other direction between the inside and outside of the roller when the difference in atmospheric pressure occurs between the inside and outside of the roller, and ventilation suppressing means 9 for closing the ventilation hole 8 to provide circulation resistance to the ventilation in both directions. |
