Patent ID: 8509641

Claim:
An electrophotographic printing device comprising: a fixing unit; and a temperature sensor, wherein the fixing unit includes a fixing member; a pressing member pressed against the fixing member; and a heater configured to heat at least the fixing member of the fixing unit and the pressing member, the fixing unit configured to fix a toner image on a recording material to the recording material while carrying the recording material through a fixing nip formed between the fixing member and the pressing member, wherein the temperature sensor is attached to a recording material supplying unit, and is configured to detect a temperature of a recording material stored in the recording material supplying unit, and a fixing temperature is controlled based on the detected temperature, and wherein the recording material supplying unit is configured to include a heat source, and if there is a large difference between an environmental temperature of the printing device and the temperature of the recording material in the recording material supplying unit, the heat source heats the recording material.