A fixing device comprising: a heating body formed in a tube-like shape and, while rotating, heating a medium (S) conveyed after a toner image is formed on the medium (S); a pressurizing body formed in a tube-like shape and, while rotating, forming a nip (N) in cooperation with the heating body and pressurizing the medium (S) by sandwiching the medium (S) in cooperation with the heating body at the nip (N); a heating source supplying the heating body heat used when the heating body heats the medium (S), and a guiding part positioned at an upstream side in a conveying direction of the medium (S) with respect to the nip (N) and guiding the medium (S) being conveyed to the nip (N); characterized by a temperature sensing part positioned to face to the heating body and sensing a temperature of the heating body ; and a charging part positioned at an opposite side to the guiding part across the temperature sensing part , being configured as a corotron type charging part electrically discharging to electrically charge the heating body with the same polarity as polarity of toner, and including: a discharging electrode electrically discharging toward the heating body facing to the discharging electrode ; and an enclosure wall supporting the discharging electrode , enclosing the discharging electrode and producing an electric field in cooperation with the discharging electrode , wherein the heating source includes an induction coil facing to a portion at a downstream side with respect to the nip (N) and at an upstream side with respect to the charging part on an outer circumference of the heating body in a rotating direction of the heating body . a heating body formed in a tube-like shape and, while rotating, heating a medium (S) conveyed after a toner image is formed on the medium (S); a pressurizing body formed in a tube-like shape and, while rotating, forming a nip (N) in cooperation with the heating body and pressurizing the medium (S) by sandwiching the medium (S) in cooperation with the heating body at the nip (N); a heating source supplying the heating body heat used when the heating body heats the medium (S), and a guiding part positioned at an upstream side in a conveying direction of the medium (S) with respect to the nip (N) and guiding the medium (S) being conveyed to the nip (N); characterized by a temperature sensing part positioned to face to the heating body and sensing a temperature of the heating body ; and a charging part positioned at an opposite side to the guiding part across the temperature sensing part , being configured as a corotron type charging part electrically discharging to electrically charge the heating body with the same polarity as polarity of toner, and including: a discharging electrode electrically discharging toward the heating body facing to the discharging electrode ; and an enclosure wall supporting the discharging electrode , enclosing the discharging electrode and producing an electric field in cooperation with the discharging electrode , wherein the heating source includes an induction coil facing to a portion at a downstream side with respect to the nip (N) and at an upstream side with respect to the charging part on an outer circumference of the heating body in a rotating direction of the heating body . <EOS>