Patent ID: 9599951
Date: 2017-03-21
CPC Classifications: B21D,B65H,G03G,Y10T

Claim:
1. A roller provided in a main assembly of an image forming apparatus or provided in a cartridge detachably mountable to the main assembly, the roller comprising: a cylindrical shaft supported by the main assembly or the cartridge, wherein the cylindrical shaft includes, in at least one location on a circumference of the cylindrical shaft, a separation region where a pair of end portions of the cylindrical shaft are located such that the end portions oppose each other or are in contact with each other with respect to a circumferential direction relative to the circumference of the cylindrical shaft, and wherein the separation region extends in an axial direction of the cylindrical shaft; and a rotatable cylindrical member mounted around an outer circumference of the cylindrical shaft, wherein the rotatable cylindrical member is rotatable about the cylindrical shaft while an inner peripheral surface of the rotatable cylindrical member is in contact with an outer peripheral surface of the cylindrical shaft in a region of the cylindrical shaft other than the separation region with respect to the circumferential direction.