| 摘要 |
PROBLEM TO BE SOLVED: To provide a fixing device that performs control on the basis of an output from a contact type temperature sensor, the fixing device preventing an increase in standby time and excessive heating of members due to incorrect detection.SOLUTION: There is provided a fixing device including: a rotatable endless fixing member; a nip forming member that is disposed inside the fixing member; an opposing rotor that is in contact with the nip forming member with the fixing member therebetween to form a nip part with the fixing member; and a heating source that directly heats the fixing member at a portion other than the nip part; and conveying a recording medium carrying an unfixed image to the nip part to fix the unfixed image to the recording medium. The fixing device has temperature detection means in contact with the opposing rotor to measure the temperature of the rotor, and a control part that controls driving means for driving conveying means for conveying the recording medium to the nip part on the basis of a measurement by the temperature detection means, where the control part drivably controls the driving means when the amount of change per unit time of the measurement by the temperature detection means reaches a predetermined threshold.SELECTED DRAWING: Figure 7 |
