| 摘要 |
PROBLEM TO BE SOLVED: To provide a developing device for forming a satisfactory image without image contamination, screw unevenness and density unevenness due to scattering and falling of toner, and to provide an image forming apparatus including the developing device.SOLUTION: The developing device includes: a first conveying screw disposed parallel to a developer support and conveying a developer in the direction of a rotation axis of the developer support; a second conveying screw; and a stirring auxiliary member. The first conveying screw and the second conveying screw have a plate-like blade members parallel to the rotation axis of the conveying screw, and the spiral blade member of the first conveying screw is provided in two or more lines. |
