| 摘要 |
This invention provides an image forming apparatus which forms an image more safely even when an abnormality occurs in a fixing device. The image forming apparatus of this invention includes two fixing devices and a fixing controller. Each fixing device includes a switch which supplies power to a fixing heater, a temperature sensor which measures the temperature of the fixing heater, and a comparator which determines from the measured temperature whether or not the fixing heater is normally operating, and outputs an error signal when an abnormality occurs. With this arrangement, when at least one comparator outputs an abnormality signal, the fixing controller can control the switches to stop the supply of power to all the fixing devices, thereby forming an image more safely. |
