| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an image forming apparatus for obtaining stable image quality for a long time period even if a developer consumption is small. <P>SOLUTION: A control circuit section 31 determines a compulsory consumption time period based on an average printing rate calculated by a calculation section 35, rotates and drives a developer carrier one cycle or more so as to compulsorily consume the developer, and reduces a circumferential speed at first rotation to a circumferential speed when an image is formed. <P>COPYRIGHT: (C)2010,JPO&INPIT |
