Image fixing appratus for fixing a toner image on a recording material by heating the toner image while feeding the recording material through a nip

An image fixing apparatus for fixing the toner image on a recording material by heating the toner image while feeding the recording material through a nip, said apparatus comprising:

• a cylindrical film;
• a nip forming member contacting an inner surface of said film;
• a pressing rotatable member forming the nip in cooperation with the nip forming member with said film interposed therebetween;
• and
• a regulating member,
• wherein said regulating member has a first surface opposing an end surface of said film in a generatrix direction of said film and a second surface opposing the inner surface of said film at an end portion of said film in the generatrix direction, and
• wherein the first surface has a regulation region contactable by the end surface of said film when said film moves in the generatrix direction, the regulation region being formed only in an upstream side of a center portion of the nip with respect to a feeding direction.

An image fixing apparatus for fixing the toner image on a recording material by heating the toner image while feeding the recording material through a nip, said apparatus comprising:

• a cylindrical film;
• a nip forming member contacting an inner surface of said film;
• a pressing rotatable member forming the nip in cooperation with the nip forming member with said film interposed therebetween;
• and
• a regulating member configured to regulate movement of said film,
• wherein said regulating member has a first surface opposing an end surface of said film in a generatrix direction of said film and a second surface opposing the inner surface of said film at an end portion of said film in the generatrix direction,
• wherein the first surface has a regulation region contactable by the end surface of said film when said film moves in the generatrix direction,
• wherein the regulation region is narrower along the entire downstream side of a center portion of the nip than in an upstream side thereof with respect to a feeding direction of the recording material, and
• wherein the regulation region at the upstream side comprises a surface parallel with the end surface of said film while the end surface of said film contacts the first surface of said regulation member.