| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a developing device having a composition which prevents occurrence of oscillation or an abnormal image due to magnetic interference in developer exfoliation using a magnet and performs sure exfoliation of a developer to prevent the occurrence of a ghost and improve image reproducibility. <P>SOLUTION: A rotatable magnetic field-generating means 82, which is provided with a magnetic pole which naps a developer to make it conveyed, is arranged in the internal part of a developer carrier 81. The magnetic field-generating means 82 is arranged by decentering the center P' of its own cross-section to the center P of the cross-section of the developer carrier 81, in an approaching direction to an image carrier 1. Furthermore, a developer-exfoliating means 90 is arranged, by the decentering, in the vicinity of a position which is farthest away from the image carrier 1, in the magnetic field-generating means 82, the developer-exfoliating means 90 being provided with: an exfoliating magnet 90B having a plurality of magnetic poles and a magnetic pole arrangement which exfoliates the developer which is not fed to the image carrier and remains on the surface of the developer carrier; and a conveying member 90A which conveys the exfoliated developer. <P>COPYRIGHT: (C)2011,JPO&INPIT |
