| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a developing device which does not cause developing hysteresis phenomenon while preventing developer from being retained by appropriately forming a magnetic brush, and to provide an image forming apparatus. <P>SOLUTION: The developing device 2 includes a developing roller 20 which is arranged facing a photoreceptor drum 11a and supplies toner to the photoreceptor drum 11a, and a magnetic roller 21 which is arranged facing the developing roller 20 and supplies the toner to the developing roller, wherein magnet members M are arranged facing each other on the roller shafts 20a and 21a inside the sleeves 20b and 21b of the developing roller 20 and of the magnetic roller 21 so that the polarities thereof may be different from each other, the magnet member MS of the developing roller 20 and/or the magnet member MN1 of the magnetic roller are supported while inclining the peak of a magnetic force more than a straight line linking the center of the roller shaft 20a of the developing roller 20 with the center of the roller shaft 21a of the magnetic roller 21. Consequently, the magnetic brush is appropriately formed. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
