| 摘要 |
PROBLEM TO BE SOLVED: To achieve a structure capable of obtaining stable development density without requiring high component accuracy and adjustment accuracy.SOLUTION: A developer rectifying surface 35a on a developing sleeve side of a developer rectifying part 35 is formed as follows. Firstly, a tangential plane A is defined which comes into contact with the surface of the developing sleeve 70 in a position where the surface of the developing sleeve 70 and a coating amount regulating surface 36a of a coating amount regulating part 36 become closest to each other. In this case, the developer rectifying surface 35a is formed in such a manner that a distance between the developer rectifying surface 35a and the tangential plane A becomes smaller toward the downstream in the developer conveyance direction, and a reduction change ratio of the interval with the tangential plane A increases toward the downstream. Thereby, an auxiliary flow component so as to push back a main flow Fm of the developer reduces, and also, an auxiliary flow Fs so as to supply the developer toward a gap between the coating amount regulating part 36 and the developing sleeve 70 is formed. |
