An apparatus includes: an image forming portion that forms an image on a medium; a fixing device removably mounted to an apparatus body to fix the image to the medium, the fixing device including a first rotator that contacts the medium, a second rotator that contacts the first rotator, a movable member movable in first and second directions in which the first and second rotators are moved closer to and away from each other, respectively, an urging member, a first end of which is mounted to the movable member and which urges the movable member in the first direction, and a first support portion that supports a second end of the urging member; a cam member that moves the movable member in the second direction; a shaft member to which the cam member is mounted; and a second support portion that supports the shaft member and the first support portion.