Patent ID: 7937027
Filing Date: 2011-05-03
Classification: F16C,G03G

Abstract:
1. A developing device that supplies toner to and develops an electrostatic image formed on a latent-image carrier, the developing device comprising: a housing; a rotating shaft; a rotator that rotates with the rotating shaft; and a bearing element that supports the rotating shaft to the housing, the bearing element formed of a composite material, the composite material containing thermoplastic olefin resin as a base material and a lubricity enhancing material, the composite material having at least a ratio of numerical values of Rockwell hardness (based on R scale of JIS K7202)/bending elastic modulus in GPa (based on JIS K7171) in a range from 25 to 45, and the composite material having a frictional coefficient that is lower than that of the base material.