Develop unit, process cartridge, and image formation apparatus
    1.
    发明公开
    Develop unit, process cartridge, and image formation apparatus 有权
    Entwicklungseinheit,Prozesskartusche und Bilderzeugungsvorrichtung

    公开(公告)号:EP2071413A1

    公开(公告)日:2009-06-17

    申请号:EP08170649.1

    申请日:2008-12-04

    IPC分类号: G03G15/09

    CPC分类号: G03G15/0921

    摘要: A develop unit (4) is configured to include a developer roller (5) having a developer sleeve (5c) and a magnetic roller (5b) with a magnetic pole (13), a supply path (9) formed in parallel with an axial direction of the developer roller (5), a supply screw (8) supplying the developer to the developer roller (5), and a first bulkhead (133) forming the supply path (9). In the developer unit (4), the magnetic pole (13) is disposed so that a normal line (K) through a maximum magnetic flux density point (P) in a circumferential direction coincides with a tangent line to an upper portion of the supply screw (8) in a rotary direction, the maximum magnetic flux density point (P) being a point at which a density of a magnetic flux from the magnetic pole is maximum on an outer surface of the developer sleeve (5c).

    摘要翻译: 显影单元(4)被构造成包括具有显影剂套筒(5c)的显影辊(5)和具有磁极(13)的磁性辊(5b),与轴向平行形成的供应路径(9) 显影辊(5)的方向,将显影剂供给到显影辊(5)的供给螺杆(8)和形成供给路径(9)的第一隔板(133)。 在显影剂单元(4)中,设置磁极(13),使得通过周向上的最大磁通密度点(P)的法线(K)与供给的上部的切线一致 旋转方向上的螺杆(8),最大磁通密度点(P)是显影套筒(5c)的外表面上来自磁极的磁通密度最大的点。