Fixing apparatus and film unit

A fixing apparatus film unit comprising:

• a film that is tubular and configured to come into contact with a recording medium and rotate;
• a guide member disposed in an inside space of the film, elongated in a generatrix direction of the film, and configured to hold a heater and guide rotation of the film;
• a stay member disposed parallel to the generatrix direction of the film in the inside space of the film;
• and
• a restriction structure disposed at a position between opposite ends of the film in the generatrix direction, and configured to engage the guide member and the stay member,
• wherein the restriction structure is configured to restrict movement of the guide member in a direction orthogonal to the generatrix direction of the film and also in a direction in which the stay member and the guide member are separated from each other.

A fixing apparatus comprising:

• a film that is tubular and configured to come into contact with a recording medium and rotate;
• a guide member disposed in an inside space of the film, elongated in a generatrix direction of the film, and configured to hold a heater and guide rotation of the film;
• a stay member disposed parallel to the generatrix direction of the film in the inside space of the film;
• a roller disposed so as to be in contact with an outside surface of the film;
• a restriction structure disposed at a position between opposite ends of the film in the generatrix direction;
• and
• an engagement member configured to engage the guide member and the stay member,
• wherein the stay member is configured to reinforce the guide member, the film and the roller forms a fixing nip portion between the film and the roller, and the recording medium, having a toner image formed on the recording medium, is heated to fix the toner image onto the recording medium at the fixing nip portion while the recording medium passes through the fixing nip portion,
• wherein the restriction structure is configured to restrict movement of the guide member in a direction orthogonal to the generatrix direction of the film and also in a direction in which the stay member and the guide member are separated from each other,
• wherein one end of the engagement member is connected to the stay member, and an opposite end of the engagement member is connected to the guide member;
• and
• wherein the engagement member serves as the restriction structure.

A fixing apparatus comprising:

• a film that is tubular and configured to come into contact with a recording medium and rotate;
• a guide member disposed in an inside space of the film, elongated in a generatrix direction of the film, and configured to guide rotation of the film;
• a stay member disposed parallel to the generatrix direction of the film in the inside space of the film;
• a roller disposed so as to be in contact with an outside surface of the film;
• a restriction structure disposed at a position between opposite ends of the film in the generatrix direction;
• and
• an engagement member configured to engage the guide member and the stay member,
• wherein the stay member is configured to reinforce the guide member, the film and the roller forms a fixing nip portion between the film and the roller, and the recording medium, having a toner image formed on the recording medium, is heated to fix the toner image onto the recording medium at the fixing nip portion while the recording medium passes through the fixing nip portion,
• wherein the restriction structure is configured to restrict movement of the guide member in a direction orthogonal to the generatrix direction of the film and also in a direction in which the stay member and the guide member are separated from each other,
• wherein the engagement member serves as the restriction structure, and
• wherein the engagement member is a member configured to be in contact with an inside surface of the film.

A fixing apparatus film unit comprising:

• a film that is tubular and configured to come into contact with a recording medium and rotate;
• a guide member disposed in an inside space of the film, elongated in a generatrix direction of the film, and configured to hold a heater and guide rotation of the film;
• a stay member disposed parallel to the generatrix direction of the film in the inside space of the film;
• a restriction structure disposed at a position between opposite ends of the film in the generatrix direction;
• and
• an engagement member configured to engage the guide member and the stay member,
• wherein the restriction structure is configured to restrict movement of the guide member in a direction orthogonal to the generatrix direction of the film and also in a direction in which the stay member and the guide member are separated from each other,
• wherein one end of the engagement member is connected to the stay member, and an opposite end of the engagement member is connected to the guide member;
• and
• wherein the engagement member serves as the restriction structure.

A fixing apparatus film unit comprising:

• a film that is tubular and configured to come into contact with a recording medium and rotate;
• a guide member disposed in an inside space of the film, elongated in a generatrix direction of the film, and configured to guide rotation of the film;
• a stay member disposed parallel to the generatrix direction of the film in the inside space of the film;
• a restriction structure disposed at a position between opposite ends of the film in the generatrix direction;
• and
• an engagement member configured to engage the guide member and the stay member,
• wherein the restriction structure is configured to restrict movement of the guide member in a direction orthogonal to the generatrix direction of the film and also in a direction in which the stay member and the guide member are separated from each other,
• wherein the engagement member serves as the restriction structure, and
• wherein the engagement member is a member configured to be in contact with an inside surface of the film.