| 摘要 |
A charging member is provided which can not easily cause vibration and can stably charge a photosensitive member, even where a high-frequency alternating-current voltage is applied thereto. It is a charging member having an electrically conductive substrate, an electrically conductive elastic layer and a surface layer, and the elastic layer has, in the order from the substrate side, a first rubber layer and a second rubber layer laminated to the first rubber layer, and, where the natural vibration frequency of the first rubber layer is represented by f 1 and the natural vibration frequency of the second rubber layer is represented by f 2 , has a natural vibration frequency ratio, f 2 /f 1 , of from 2.35 or more to 10.0 or less. |
