| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an image forming apparatus equipped with a developing apparatus which achieves reduction in running cost by eliminating unnecessary carrier replacement and which provides image quality with stable density over a long period of time. <P>SOLUTION: A developer replenished from a replenishing apparatus has a higher ratio of the carriers to the developer at a later period of use than at an early period of use. <P>COPYRIGHT: (C)2010,JPO&INPIT |
