| 摘要 |
PROBLEM TO BE SOLVED: To provide a developing device capable of coating toner on a developing sleeve in a good manner and uniformly and stably forming images. SOLUTION: A developer control member 2 composed of round bars as magnetic bodies place as specified intervals W is arranged in a developing sleeve 1a having a permanent magnet 1a fixed inside and developer carrying means 3a and 3b are provided in a developer canister 4. The carrying means 3a is arranged in a position in a magnetic field formed between the permanent magnet 1a and the round bar 2 by a equal distance from these where the density of magnetic toner is nearly constant and the density of a magnetic line is rough. |
