Image Forming Device Including Regulation Member That Regulates Movement of Flapper When Rear Cover is Open

An image forming device comprising:

• a heat member that heats a toner image formed on a recording medium;
• a pressure member in pressed contact with the heat member, forming a nip part therebetween;
• a main casing accommodating the heat member and the pressure member, the main casing having a cover member that is movable between a first closed position for covering the pressure member and a first open position for exposing the pressure member;
• a flapper disposed between the nip part and the cover member so as to be movable between a second closed position for covering the pressure member and a second open position for exposing the pressure member, the flapper toggling between conveying paths;
• a regulating member capable of regulating movement of the flapper to the second open position when the cover member is in the first open position so as to maintain the pressure member covered by the flapper;
• and
• a releasing-operation part that a user operates to release the regulation of the regulating member to the movement of the flapper when the cover member is in the first open position.