US 12,085,874 B2
Edge regulating member, belt rotation device, and image forming device
Shohtaroh Okamoto, Sakai (JP)
Assigned to SHARP KABUSHIKI KAISHA, Sakai (JP)
Filed by SHARP KABUSHIKI KAISHA, Sakai (JP)
Filed on Feb. 14, 2023, as Appl. No. 18/109,380.
Claims priority of application No. 2022-024030 (JP), filed on Feb. 18, 2022.
Prior Publication US 2023/0266698 A1, Aug. 24, 2023
Int. Cl. G03G 15/00 (2006.01); G03G 15/16 (2006.01)
CPC G03G 15/1615 (2013.01) [G03G 2215/00151 (2013.01); G03G 2215/00156 (2013.01)] 17 Claims
OG exemplary drawing
 
1. An edge regulating member included in a belt rotation device that tensions a belt via a belt tensioning roller and rotates the belt in a rotation direction, the edge regulating member being provided in a rotatable manner on a rotary shaft of the belt tensioning roller to regulate misaligned movements of the belt in a rotation axis direction of the belt tensioning roller, the edge regulating member comprising:
a body that comes into contact with an inner surface of the belt; and
a regulating portion that extends, at a position adjacent to the body, further outward in a radial direction of the belt tensioning roller than the body and comes into contact with an edge of the belt,
wherein tension of the belt acting on the body, while the inner surface of the belt is in contact with the body, causes the regulating portion to tilt and turn outward in the rotation axis direction from a fold-back portion of the belt toward an upstream side in the rotation direction, and
at an inner peripheral surface opposite the rotary shaft, a first inner diameter of an inner end of the edge regulating member in the rotation axis direction is greater than a second inner diameter of an outer end of the edge regulating member in the rotation axis direction.