Patent attributes
The present invention realizes a fixing device and an image forming apparatus in each of which (i) the amount of power consumption is small and (ii) a wait time from when a command for starting printing is inputted until when printing is started is short. The fixing device of the present invention includes (i) a fixing roller (250) and a pressure roller (251) which are provided so as to contact each other, (ii) a thermal heater (252) for heating the fixing roller (250), (iii) a thermistor (254) for detecting the temperature of the fixing roller (250), and (iv) a heating control section (255) for controlling a drive start or drive stop of the thermal heater (252). The heating control section (255) carries out control of the thermal heater (252) for a predetermined time, and restarts the control of the thermal heater (252) based on a difference between (i) the temperature of the fixing roller (250) when the control of the thermal heater (252) is stopped and (ii) the temperature of the fixing roller (250) after a certain time has elapsed since the control of the thermal heater (252) is stopped.
