Patent ID: 8165511

Claim:
An offset correcting device comprising: an endless belt-like member having an endless belt-like shape; a rotation supporting member that has a rotation shaft in which an axial direction extends along a width direction of the endless belt-like member, and that is rotated while supporting the endless belt-like member; an interlocking member that is supported by one end portion of the rotation shaft to be movable along the axial direction, and that is capable of being contacted with a width direction edge of the endless belt-like member; and a shaft displacing member that has: a swing center that is placed at a position deviated from the rotation shaft and that intersects with the axial direction; a rotation shaft contacting portion that is contacted with the one end portion of the rotation shaft of the rotation supporting member; and an interlocking member contacting portion that is contacted with the interlocking member and that is movable integrally with the rotation shaft contacting portion, wherein, when the interlocking member is pressed against the width direction edge of the endless belt-like member that is moved to one end side of the rotation shaft, the interlocking member contacting portion and the rotation shaft contacting portion are swung about the swing center, and the rotation shaft contacting portion tilts the rotation shaft in a tilting direction coincident with a direction along which the endless belt-like member is moved toward another end of the rotation shaft.