ROLLER-SUPPORTING BEARING FOR DEVELOPING DEVICE

摘要

PROBLEM TO BE SOLVED: To prevent the fluctuation in the rotating torque of a roller and the wear of bearings. SOLUTION: The roller-supporting bearings of a developing device which freely rotatably support one roller of at least either of a developing roller and agitating roller at the wall of a developing tank in which a developer is housed are formed by arranging a lubricant composition of a solid shape consisting of a mixture composed of lubricating grease or lubricating oil and an ultra-high molecular weight polyolefin resin tight contactably with the circumference of a supporting shaft.