Abstract: Heat-fixing apparatus including a heat roll and a pressure roll and a pressure roll which are rotatable in a pressed contact state for heat fixing of toner image carried on a continuous paper and defining a gap an introduction guide disposed upstream of the heat roll and the pressure roll for guiding the continuous paper into a gap between the heat roll and the pressure roll; and a pair of paper-discharging rolls disposed downstream of the heat roll and the pressure roll and rotatable in a pressed contact state and defining a gap for permitting the continuous paper to pass therethrough. The pressure roll is movable away from the heat roll, and the gap between the heat roll and the pressure roll is located above a plane including a downstream end of the introduction guide and the gap between the pair of paper-discharging rolls.