| 摘要 |
PROBLEM TO BE SOLVED: To provide a developing device capable of extremely reducing faulty development caused by the mark of a screw pitch and the insufficiency of the filling amount of developer. SOLUTION: In this developing device, the inside of a case 53 is divided to a 1st space part 65 positioned on a side where the developer is supplied to an image carrier and a 2nd space part side 64 where replenishing toner is supplied, and stirring members 56 and 55 driven to be rotated so as to stir and carry the developer are arranged in the respective space parts, and n (n>=2)- threads screw members are used as the 1st stirring member arranged in the 1st space part and (n-x) (x>=0)-threads screw members are used as the 2nd member arranged in the 2nd space part. |
