| 摘要 |
PROBLEM TO BE SOLVED: To provide an image forming apparatus and a process cartridge which satisfy miniaturization of the apparatus and enhancement of image quality, and in which occurrence of carrier adhesion to a solid portion as well as carrier adhesion to an edge portion is suppressed and occurrence of an abnormal image and an adverse effect such as toner flying-off is also suppressed. SOLUTION: There are optimized the outside diameter of a photoreceptor drum 1 and the thickness of a CTL layer, the outside diameter of a developing sleeve 51, a developing bias applied to the developing sleeve 51, the scoop amount of a developer on the developing sleeve 51, normal magnetic flux densities of a main pole and a P2 magnetic pole formed on the developing sleeve 51, a gap between the photoreceptor drum 1 and the developing sleeve 51, the linear velocity ratio of the developing sleeve 51 to the photoreceptor drum 1, the toner concentration of the two-component developer, the particle diameter of the toner, and the weight average particle diameter, static resistance and saturation magnetization of the carrier. COPYRIGHT: (C)2006,JPO&NCIPI |
