| 摘要 |
PURPOSE:To enhance jumping efficiency of a devloper remarkably and stably, to enable development at low potential, and to obtain a high-quality image by illuminating the surface layer of the photosensitive body of a developing roller with a destaticizing lamp. CONSTITUTION:The layer (a') of a developer triboelectrified with a blade 35 is formed on a developing roller 33, and the photosensitive face 29 of a photosensitive body 13 is developed. At that time, bias voltage Vb is applied to control image quality. The roller 33 faces a destaticizing lamp 37, the photosensitive layer 32 of the roller 33 is made conductive with the light incident throught the layer (a'), and electrostatic charge induced on the surface in advance or caused there by friction is removed. In this case, when Se is used, it can be fully erased by irradiating the layer (a') with a light of about 50-100lux.sec. |
