A heater is inserted into a roller through-hole of a heating roller body. An attached portion of a terminal plate is attached to a power supply terminal provided on one end of the heater. An engaging portion is a plate member extending from the attached portion in a first radial direction of the heating roller body and arranged in parallel with a longitudinal direction of the heater. The engaging portion is engaged with the fixing frame. An engaging terminal portion is a plate member extending from the attached portion in a second radial direction of the heating roller body and intersects with the longitudinal direction of the heater. The second radial direction is a direction the same as the first radial direction.