| 摘要 |
PROBLEM TO BE SOLVED: To reduce, in a developer conveying device including a developer conveying member formed in a hollow shape, probability of cylindrical aggregation of developer in the hollow part.SOLUTION: A developing device 70 includes a first conveying screw 72 and a second conveying screw 73 in order to convey and circulate developer. The first conveying screw 72 includes a first screw 721, and first break-down members 721J. The first screw 721 includes a hollow part, and is provided to extend in a spiral shape along a conveyance direction of the developer. The first break-down members 721J are disposed to cross inside the hollow part in the first screw 721 in a direction intersecting with the conveyance direction of the developer. |
