Patent ID: 8351831

Claim:
An displacement correcting device comprising: an endless belt-shaped member; a rotation supporting member that includes a rotation shaft the axial direction of which is parallel to a width direction of the endless belt-shaped member and rotates to support the endless belt-shaped member; a rotation shaft supporting body that includes a one-end supporting portion rotatably supporting one end of the rotation shaft and an opposite-end supporting portion rotatably supporting the other end of the rotation shaft; a shaft supporting frame that supports the one-end supporting portion movably relative to the opposite-end supporting portion and supports the one end of the rotation shaft so that the one end of the rotation shaft can be tilted with respect to the other end of the rotation shaft; a movement detecting member that detects movement of the endless belt-shaped member to the one end of the rotation shaft; and a shaft displacing member that includes a rotation center which is disposed at a position displaced from the rotation shaft and closer to the one end of the rotation shaft than the rotation shaft supporting body and which intersects an axial direction of the rotation shaft, and that further includes a rotation shaft contact portion which contacts with the one end of the rotation shaft, wherein the movement detecting member detects the movement of the endless belt-shaped member to the one end of the rotation shaft, the rotation shaft contact portion rotates about the rotation center to move the one end of the rotation shaft relative to the other end of the rotation shaft so that the rotation shaft is tilted in a tilt direction in which the endless belt-shaped member moves to the other end of the rotation shaft.