IMAGE FORMING APPARATUS HAVING FIXING MEANS ERROR DETECTOR

摘要

An image forming apparatus includes image forming means for forming an unfixed image on a recording material; a fixing device for heat-fixing the unfixed image on the recording material, the fixing means including a heater for heating the unfixed image, the heater being controlled at a predetermined the temperature during fixing operation, and a temperature detecting element for detecting the temperature of the heater, wherein power supply to the heater is started after production of image formation start signal; a discriminating device for discriminating an error in the fixing device on the basis of the temperature of the heater a predetermined period after start of power supply to the heater.