Patent ID: 7796908
Filing Date: 2010-09-14
Classification: G03G

Abstract:
1. An image forming apparatus comprising: a fixing device including a heater to which electric power is fed from a commercial power supply and a temperature sensor that detects temperature of the heater; an auxiliary power supply that is charged by the commercial power supply and discharges electricity to a specific load; and a control unit configured to control ON and OFF of the heater and ON and OFF of charging of the auxiliary power supply, wherein the control unit turns on the heater when a detected temperature of the temperature sensor descends and it becomes lower than a first set temperature and turns off the heater when the detected temperature rises and it becomes higher than the first set temperature, and, on the other hand, the control unit turns on the charging of the auxiliary power supply when the detected temperature rises and it becomes higher than a second set temperature, the second set temperature being higher than the first set temperature, and turns off the charging of the auxiliary power supply when the detected temperature descends and it becomes lower than the second set temperature.