Patent ID: 9488950
Filing Date: 2016-11-08
CPC Classification: G03G

Claim Text:
1. A contact member that comes in contact with an inner surface of a cylindrical member being rotated to press against the inner surface, is supported within the cylindrical member, is provided along the inner surface when viewed in an axial direction of the cylindrical member while being supported by the cylindrical member, has an arc shape in which both ends thereof face each other across an opening, and has first thin-wall regions which are respectively formed at both ends thereof in a circumferential direction to have thicknesses lower than thicknesses of other regions of the contact member, wherein the first thin-wall regions is a single piece and has a first thickness in the radial direction for a length starting at the opening and steps up to a second thickness in the radial direction, where the second thickness is greater than the first thickness.