| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a developing device which stably keeps image quality by effectively suppressing rotation with developer in a developer releasing position. <P>SOLUTION: The developing device 2 has: a developing roller 8 which has a magnet roller in which a plurality of magnetic poles including a magnetic pole for forming a magnetic field for scooping up the developer onto the surface of a developing sleeve 9 are arranged, inside the developing sleeve 9 conveying the developer including a magnetic carrier and a toner, and an area for releasing the developer conveyed on the surface of the developing sleeve; and a developer stirring area for supplying the developer to the developing roller 8. In the developing device 2, a developer guiding member 16 having an end portion f near the surface of the developing sleeve 9 is provided for the whole area in the axial direction of the developing sleeve between a position for releasing the developer and a scooping up position, in the circumferential direction of the developing roller 8, and the end portion g on a side far from the developing sleeve 9, of the developer guiding member 16 is placed under the powder surface of the developer in the direction of gravitational force. <P>COPYRIGHT: (C)2008,JPO&INPIT |
