| 摘要 |
PROBLEM TO BE SOLVED: To obtain an image of high definition being free from a density unevenness, ground fogging or the like, and to prevent deterioration of the image quality regardless of the use over a long term by means of this developing roller. SOLUTION: In this developing roller composed of a conductive elastic layer 3 formed on a periphery of a conductive shaft 2, feeding the one component developer, by carrying the developer, on the elastic layer surface and forming the thin layer of the developer, when the elastic layer 3 contains the resin property on the surface, and assuming the roller resistance as R1 in the case the resin property is not provided while assuming the roller resistance as R2 in the case the resin property is provided, the following relation is satisfied, log (R2 /R1 )<=3. |
