HEATING APPARATUS HAVING A CYLINDRICAL FILM AND A PRESSING ELEMENT TO FORM A NIP

A heating apparatus includes a cylindrical film and a pressing element that rotates with the cylindrical film and forms a nip with the cylindrical film. A medium is conveyed along a conveyance path from an upstream side to a downstream side through the nip. The heating apparatus includes a heater inside the cylindrical film and a guide member inside the cylindrical film and including a first guide portion including a first end portion that is located closer to the pressing element than the heater in a direction perpendicular to the conveyance path, and a second guide portion located downstream of a downstream end of the heater. The nip is formed along the conveyance path between a first position corresponding to the first end portion and a second position corresponding to the downstream end of the heater.