Developing unit having ceramic donor roll
    4.
    发明授权
    Developing unit having ceramic donor roll 失效
    具有陶瓷供体辊的显影单元

    公开(公告)号:US5384627A

    公开(公告)日:1995-01-24

    申请号:US215449

    申请日:1994-03-21

    IPC分类号: G03G15/06 G03G15/08

    摘要: A developer unit adapted to develop a latent image with toner particles. The unit includes a housing defining a chamber for storing a supply of toner particles in the chamber. The unit also includes a donor roll including an electrically non-conductive circumferential surface having a conductivity less than 10.sup.-8 (ohm-cm).sup.-1 and having a central region and opposed marginal regions disposed on either side of the central region with the diameter of the central region being less than the diameter of the opposed marginal regions. The donor roll is spaced from the latent image to form a development zone. The unit further includes an electrode member which is positioned in the development zone adjacent opposed marginal regions and spaced from the central regions of the donor roll. The electrode member is electrically biased to detach toner particles from the donor roll to form a toner powder cloud in the development zone with toner particles from the toner cloud developing the latent image.

    摘要翻译: 适于用调色剂颗粒显影潜像的显影剂单元。 该单元包括限定用于在腔室中存储调色剂颗粒供应的室的壳体。 该单元还包括供体辊,其包括具有小于10-8(ohm-cm)-1的导电性的非导电圆周表面,并且具有中心区域和设置在中心区域的任一侧上的相对边缘区域, 的中心区域小于相对的边缘区域的直径。 供体辊与潜像间隔开以形成显影区。 该单元还包括电极构件,该电极构件邻近相对的边缘区域定位在显影区域中并与供体辊的中心区域间隔开。 电极构件被电偏压以从供体辊分离调色剂颗粒,以在显影区中形成调色剂粉末,调色剂颗粒从调色剂云显影出潜像。

    Hybrid scavengeless development system
    7.
    发明授权
    Hybrid scavengeless development system 有权
    混合开发系统

    公开(公告)号:US6026264A

    公开(公告)日:2000-02-15

    申请号:US292201

    申请日:1999-04-15

    IPC分类号: G03G15/08

    摘要: An apparatus for developing a latent image recorded on an imaging surface, including a housing defining a reservoir storing a supply of developer material including toner. A mag roll loads a toner layer onto a region of said outer surface of said donor member. A donor member, spaced from the imaging surface, moves toner on an outer surface of said donor member to a development zone opposed from the imaging surface. A shield, adjacent to said donor member and said development zone, said shield being electrical biased to generate a toner cloud between said shield and said donor member which said toner cloud releases to the development zone to develop the latent image, in response to the movement of toner on the outer surface of said donor member.

    摘要翻译: 一种用于显影记录在成像表面上的潜像的装置,包括限定存储包含调色剂的显影剂材料供应的储存器的壳体。 磁辊将调色剂层装载到所述供体构件的所述外表面的区域上。 与成像表面间隔开的施主构件将所述施主构件的外表面上的调色剂移动到与成像表面相对的显影区。 与所述供体构件和所述显影区相邻的屏蔽件,所述屏蔽件被电偏置以在所述屏蔽和所述供体构件之间产生调色剂云,所述调色剂云响应于所述移动而释放到显影区以显影潜像 的调色剂在所述供体构件的外表面上。

    Donor roll with electrode spacer for scavengeless development in a
xerographic apparatus
    8.
    发明授权
    Donor roll with electrode spacer for scavengeless development in a xerographic apparatus 失效
    具有电极间隔物的供体辊,用于在静电印刷设备中无清除发展

    公开(公告)号:US5338893A

    公开(公告)日:1994-08-16

    申请号:US106744

    申请日:1993-08-16

    IPC分类号: G03G15/08

    摘要: In a scavengeless development apparatus, an electrode wire is disposed between a donor roll and a latent image to form a powder cloud of toner to develop the latent image. The donor roll includes a section of increased diameter spaced away from the latent image, and the electrode wire is disposed in sliding contact with the section of increased diameter to obtain a consistent spacing from the main length of the donor roll.

    摘要翻译: 在无扫描显影装置中,电极线设置在供体辊和潜像之间以形成调色剂的粉末云以显影潜像。 供体辊包括与潜像间隔开的直径增加的部分,并且电极丝设置成与增加直径的部分滑动接触以获得与供体辊的主长度的一致的间隔。