An electrophotographic apparatus for providing a thermally fixed toner image on a recording medium and wherein the fixing temperature can be selectively canceled. The apparatus is of the type including: an image forming unit for forming a toner image to be printed and for then transferring the toner image onto a recording medium, a feed mechanism for feeding a recording medium supplied via one of at least two guide paths to the image forming unit, a fixing unit for thermally fixing the transferred toner image on the recording medium, and a temperature control unit for setting a fixing temperature for the fixing unit. A controller is provided to determine the particular guide paths used to supply the recording medium and to command the temperature control unit to set a fixing temperature in accordance with the determined guide path. Preferably, one of the guide path is supplied by a sheet feeder and the other guide path is a horizontal path permitting manual insertion, and the controller causes a lower fixing temperature to be set when the recording medium is supplied by the feeder and a higher fixing temperature when the recording mechanism is supplied via the horizontal guide path.