A method of disassembling an image forming apparatus comprising a first member having a first face, a first protrusion projecting from the first face, a second protrusion formed in a position apart from the first protrusion and projecting from the first face, and a groove portion formed in the first face, and a second member having a second face provided with a first hole and a second hole, wherein the image forming apparatus includes a frame formed by inserting the second protrusion into the second hole, superposing the second face on the first face, and fixing the second member to the first member so that the second face is sandwiched between a part of the first protrusion inserted in the first hole and the first face in a state in which the groove portion located between the first member and the second member is in a visible state, and wherein the second hole in which the second protrusion has been inserted has a gap between the second hole and the second protrusion in an extending direction of the groove portion, the method comprising:
- inserting a tool into the groove;
- and
- moving the tool in a direction of separating the second face away from the first face so that the first member and the second member are separated from each other.