Fixing device and image forming apparatus having a movable pressing unit

A fixing device comprising:

• a heating unit;
• an endless belt body that rotates by following rotation of the heating unit;
• and
• a pressing unit that faces the heating unit with the endless belt body interposed between the pressing unit and the heating unit, the pressing unit including
• a retaining body that retains the endless belt body while allowing the endless belt body to rotate;
• a first pressing-area-forming portion that is a part of the retaining body;
• a pressing member that is provided on an upstream side of the retaining body with respect to the first pressing-area-forming portion in a direction of rotation of the endless belt body, the pressing member being made of a metal plate that is bent along a line extending in a longitudinal direction of the plate;
• and
• a second pressing-area-forming portion that is provided on the upstream side of the retaining body with respect to the pressing member in a direction of rotation of the endless belt body,
• wherein the pressing unit is movable relative to the heating unit between two positions, including a position where a pressing area is formed when the pressing unit is pressed toward the heating unit by the first pressing-area-forming portion, second pressing-area-forming portion and the pressing member and a position where the pressing area is formed by the pressing member only.