Belt rotating device, transfer device, and image forming apparatus

A belt rotating device comprising:

• a meandering correction roller that is rotatably supported within a support frame and is one of a plurality of rollers that stretch an endless belt;
• a supporting portion that is provided at the support frame and supports a rotating shaft of the meandering correction roller so as to be able to incline the rotating shaft of the meandering correction roller in one direction;
• a first collar member that is provided on the rotating shaft of the meandering correction roller, contacts an end of the endless belt in which meandering has occurred, and moves in an axial direction;
• a second collar member that is provided adjacent to the first collar member on the rotating shaft of the meandering correction roller and configured to move in the axial direction, and includes:
• an annular portion;
• and
• a contact portion that is protruded from a portion in a circumferential direction of the annular portion to a radial direction;
• and
• a contact member that is supported by the support frame and contacts the contact portion of the second collar member, wherein:
• the second collar member is restricted from rotating with respect to the rotating shaft;
• and
• the rotating shaft of the meandering correction roller is inclined in the one direction when the second collar member contacts the contact member and moves in the axial direction.