Image forming apparatus having removable fixing device

An image forming apparatus, comprising:

• a main housing;
• and
• a fixing device comprising a heating member and a pressure member, the fixing device being installable into the main housing in a first direction that is perpendicular to a longitudinal direction of the fixing device, from one side in the first direction to another side in the first direction, wherein
• the main housing has a groove extending in the first direction,
• the fixing device further comprises a pivot boss protruding therefrom in the longitudinal direction, and the pivot boss is configured to enter the groove in a process of the fixing device being installed into the main housing and to be located in the groove in a state where the fixing device is installed in the main housing,
• the pivot boss has a shape that is elongated in the first direction, and
• the pivot boss has a first end on the another side in the first direction and a second end on the one side in the first direction, the first end of the pivot boss has a tapered shape with a dimension in a second direction that is perpendicular to the longitudinal direction and to the first direction, and the dimension of the tapered shape in the second direction decreases as the first end of the pivot boss is elongated from the one side in the first direction to the another side in the first direction.

An image forming apparatus, comprising:

• a main housing;
• and
• a fixing device comprising a heating member and a pressure member, the heating member extending in a longitudinal direction, and the fixing device being installable into the main housing in a first direction that is perpendicular to the longitudinal direction, from one side in the first direction to another side in the first direction, wherein
• the main housing has a recess that is recessed toward one side in a second direction that is perpendicular to the longitudinal direction and to the first direction,
• the fixing device further comprises a positioning boss extending in the longitudinal direction, the positioning boss located in the recess in a state where the fixing device is installed in the main housing, and
• the image forming apparatus further comprises a restriction element attachable to the main housing and to the fixing device, from the one side in the first direction from outside of the main housing and the fixing device, and removable from the main housing and the fixing device in a state where the fixing device is installed in the main housing, a portion of the restriction element is held between the main housing and the fixing device to thereby restrain the fixing device from moving relative to the main housing toward another side in the second direction.