Roller, developing unit and image forming apparatus having the same, and method of manufacturing roller

摘要

A roller (67) for use in a developing unit (60) of an image forming apparatus may include a non-conductive shaft member (68) and a non-conductive member (69) to surround at least a part of an outer periphery of the shaft member (68). The shaft member (68) may include a cylindrical rolling part (68a) and a pair of support parts (68b) formed to project from both ends of the rolling part (68a) in a lengthwise direction. The rolling part (68a) of the shaft member (68) may be arranged opposite a charge roller (63) in a developing unit (60) and may rotate in contact with the charge roller (63) to absorb and remove foreign substances adhered to a surface of the charge roller (63).