| 摘要 |
PURPOSE:To stabilize the mixing rate of toner to carrier Tc and to eliminate the shortage of image density and image density inclination. CONSTITUTION:Bucket rollers 33 and in a developing device 3, and a developer flow controlling board 35 are formed in such a state where the developer flow is circulating flow in 8-shape, and an image density sensor AIDC is temporarily provided on the surface of a photosensitive drum 1 at a position corresponding to the crossing position Y of the developer on the 8-shaped circulating flow. |
