Patent ID: 8819894

Claim:
An image forming apparatus comprising: an image forming apparatus main body; and a plurality of casters mounted to a bottom surface of the image forming apparatus main body so as to be rotatable parallel to the bottom surface, wherein at least one of the casters including: a retaining portion fixed to the bottom surface of the image forming apparatus main body; a caster main body rotatably retained by the retaining portion; a wheel rotatably retained by the caster main body; a first lock mechanism which is provided on a first engaged portion formed on the retaining portion and on the caster main body, which has a first engaging portion configured to be detachably engaged with the first engaged portion, and which is configured to fix the caster main body in position with the first engaging portion being engaged with the first engaged portion so as to be in phase with each other; a second lock mechanism which is provided on a second engaged portion formed on an inner peripheral surface of the wheel and on the caster main body, which has a second engaging portion configured to be detachably engaged with the second engaged portion, and which is configured to fix the wheel in position with the second engaging portion being engaged with the second engaged portion so as to be in phase with each other; an operation lever for fixing the caster main body in position by the first lock mechanism and releasing the fixation thereof and for fixing the wheel in position by the second lock mechanism and releasing the fixation thereof; and an elastic member which is provided between the operation lever and the second lock mechanism and which is configured to undergo deformation so as to enable the operation lever to move to a rotation lock position allowing engagement of the first engaging portion with the first engaged portion even when a fixing operation is performed on the operation lever in a state in which the second engaged portion and the second engaging portion are not in phase with each other.