Fixing device that regulates a position of an inner surface of a film

A fixing device comprising:

• a rotatable cylindrical film;
• a contact member contacting an inner surface of said film;
• a nip forming member configured to form a nip in cooperation with said contact member through said film, wherein, in the nip, a recording material on which an image is formed is heated while being fed, and the image is fixed on the recording material;
• and
• a regulating member provided at an inner space of an end portion of said film in a longitudinal direction of said film, and including an inner surface regulating surface that contacts the inner surface of said film and that is configured to regulate a position of the inner surface of said film, wherein, as viewed in the longitudinal direction of said film, with respect to a rotational direction of said film, said inner surface regulating surface includes a first region remotest from the nip and a second region closer to the nip than the first region, and the second region being positioned in a side upstream of a center of the nip with respect to a recording material feeding direction,
• wherein the first region of said inner surface regulating surface is inclined so as to be spaced from the inner surface of said film toward a longitudinal center of said film with respect to the longitudinal direction of said film, and, in the second region of said inner surface regulating surface, a distance from the inner surface of said film is the same over the longitudinal direction of said film.

A fixing device comprising:

• a rotatable cylindrical film;
• a contact member contacting an inner surface of said film;
• a nip forming member configured to form a nip in cooperation with said contact member through said film, wherein, in the nip, a recording material on which an image is formed is heated while being fed, and the image is fixed on the recording material;
• and
• a regulating member provided at an inner space of an end portion of said film in a longitudinal direction of said film, and including an inner surface regulating surface that contacts the inner surface of said film and that is configured to regulate a position of the inner surface of said film, wherein, as viewed in the longitudinal direction of said film, with respect to a rotational direction of said film, said inner surface regulating surface includes a first region remotest from the nip and a second region closer to the nip than the first region, and the second region being positioned in a side upstream of a center of the nip with respect to a recording material feeding direction,
• wherein the first region of said inner surface regulating surface is inclined so as to be spaced from the inner surface of said film toward a longitudinal center of said film with respect to the longitudinal direction of said film, and the second region of said inner surface regulating surface is not inclined.