| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an image forming apparatus which can discharge deteriorated old toner by performing a toner discharge operation when an image is not formed, the image forming apparatus hardly causing density irregularities in the image formed just after toner is discharged. <P>SOLUTION: In a developing device having such a shape that it extends in the width direction of the image, the width W of a high-image-density area Ea in a toner discharge pattern E is set so that an area where a toner amount is reduced by the discharge of the toner is moved to a position out of a position facing a photoreceptor drum by the time of the first development after the toner is discharged. <P>COPYRIGHT: (C)2010,JPO&INPIT |
