| 摘要 |
<P>PROBLEM TO BE SOLVED: To suppress leakage of developer or unevenness in image density by achieving stable developer discharge property even in the case where developer discharge property has been changed because of a change in fluidity of developer. <P>SOLUTION: An image forming apparatus includes control means for controlling a rotation speed of a developing sleeve 28 to be reduced to a predetermined rotation speed (rotation speed detection unit, CPU, and control circuit) when a rotation speed detected by conveying screw rotation speed detection means Z for detecting a rotation speed of a first conveying screw 25 or a second conveying screw 26 is at a predetermined rotation speed or lower. <P>COPYRIGHT: (C)2013,JPO&INPIT |
