Patent ID: 8160482

Claim:
A belt device comprising: a belt member that is supported by a plurality of roller members including a first roller member and moves in a predetermined direction of movement; a coupling member that is coupled with the first roller member; and an abutting member that makes contact with the coupling member by changing tilting of a rotational axis of the first roller member and moves the coupling member in a forward direction and a reverse direction to correct meandering of the belt member, wherein an abutting position of the coupling member with respect to the abutting member when moving the coupling member in the forward direction and an abutting position of the coupling member with respect to the abutting member when moving the coupling member in the reverse direction are variable to support respective movement directions, one end of the coupling member is coupled to a shaft of the first roller member, and other end of the coupling member is formed to sandwich the abutting member in the forward direction and the reverse direction, so that a central section constitutes a center of swinging.