a controller which causes the sheet to move toward {TAIL ~ the heat roller} and thus causes heating to be carried out when an image forming side detected by the scanner faces the heat roller, and causes the reverse mechanism to reverse {HEAD ~ the sheet} and then causes heating to be carried out by the heat roller when the image forming side does not face the heat roller 
a controller which causes the sheet to move toward { TAIL ~ the heat roller } and thus causes heating to be carried out when an image forming side detected by the scanner faces the heat roller , and causes the reverse mechanism to reverse { HEAD ~ the sheet } and then causes heating to be carried out by the heat roller when the image forming side does not face the heat roller
OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH