METHOD OF DEVELOPMENT AND DEVELOPMENT APPARATUS
    2.
    发明公开
    METHOD OF DEVELOPMENT AND DEVELOPMENT APPARATUS 审中-公开
    VERFAHREN ZUR ENTWICKLUNG UND ENTWICKLUNGSVORRICHTUNG

    公开(公告)号:EP2009509A1

    公开(公告)日:2008-12-31

    申请号:EP06780777.6

    申请日:2006-06-28

    IPC分类号: G03G15/08 G03G9/08 G03G9/083

    摘要: A developing method is provided in which a developer is carried on a developer carrying member, a thin layer of the developer is formed thereon and a latent image on a latent image bearing member is developed with a developer. The developer is composed of magnetic toner particles containing a binder resin and a magnetic powder. The magnetic powder has a saturation magnetization of 67.0 Am 2 /kg to 75.0 Am 2 /kg in a magnetic field of 79.6 kA/m (1,000 oersteds) and has a residual magnetization of 4.5 Am 2 /kg or less. In the surface profile of the conductive resin coat layer of the developer carrying member, the relationship 1.00 ≤ S/A ≤ 1.65 is satisfied where S is a surface area of regions zoned by an area A of microscopic unevenness regions from which parts exceeding a reference plane by 0.5 × r (r: weight average particle diameter (µm) of a toner used) or more have been excluded.

    摘要翻译: 提供了一种显影剂,其中显影剂被承载在显影剂承载构件上,在其上形成显影剂的薄层,潜像承载构件上的潜像用显影剂显影。 显影剂由含有粘合剂树脂和磁性粉末的磁性调色剂颗粒组成。 磁性粉末在79.6kA / m(1,000奥斯特)的磁场中具有67.0Am 2 / kg至75.0Am 2 / kg的饱和磁化强度,并且具有4.5Am 2 / kg或更小的剩余磁化强度。 在显影剂承载构件的导电树脂涂层的表面轮廓中,满足1.00‰¤S/ A‰¤1.65,其中S是由微观不均匀区域A区域划分的区域的表面积,其中零件超过 已经排除了0.5×r(r:调色剂的重均粒径(μm))以上的基准面以上。