| 摘要 |
PROBLEM TO BE SOLVED: To provide a developing roller which maintains electrification imparting performance and toner conveying performance at a fixed level even when printing many sheets by imparting durability to a covering layer, and stably forms a toner image having predetermined density and free from density irregularity. SOLUTION: In the developing roller 25 constituted by forming the covering layer 12 having conductivity on the outer periphery of a conductive shaft 11, the covering layer 12 has at least inorganic oxide particles and photosetting resin. COPYRIGHT: (C)2009,JPO&INPIT |
