| 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 f1 and the natural vibration frequency of the second rubber layer is represented by f2, has a natural vibration frequency ratio, f2/f1, of from 2.35 or more to 10.0 or less.
|
