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    • 1. 发明授权
    • Mechanism to prevent toner leakage from an image forming unit
    • 防止调色剂从图像形成单元泄漏的机构
    • US5592268A
    • 1997-01-07
    • US494558
    • 1995-06-22
    • Mitsuyoshi UeharaHideo YoshiharaTsutomu SuzukiFumio MoritaHiroshi Igarashi
    • Mitsuyoshi UeharaHideo YoshiharaTsutomu SuzukiFumio MoritaHiroshi Igarashi
    • G03G15/09
    • G03G15/0942
    • An image forming unit includes structure to prevent leakage of initial developer containing magnetic carrier and magnetic toner from a case. The image forming unit includes a photoconductive drum, a developing sleeve, and a trimming blade. Auxiliary sealing members are attached to the opposite ends of the trimming blade to stop up gaps between side sealing members in sliding contact with the opposite ends of the developing sleeve, and a protective sheet is removably inserted in the gap between the developing sleeve and the trimming blade. Ferromagnetic strips capable of being magnetized by the magnet roller are attached to the reverse side of the protective sheet at the opposite sides of one end of the protective sheet. The ferromagnetic strips magnetically attract the developer that is about to leak through the gaps to completely prevent leakage of the developer.
    • 图像形成单元包括防止从壳体泄漏包含磁性载体的初始显影剂和磁性调色剂的结构。 图像形成单元包括感光鼓,显影套筒和修剪刀片。 辅助密封构件附接到修剪刀片的相对端,以阻止侧密封构件与显影套筒的相对端滑动接触的间隙,并且保护片可移除地插入显影套筒和修整件之间的间隙中 刀。 能够被磁性辊磁化的铁磁条在保护片的一端的相对侧附着在保护片的背面。 铁磁条磁吸引将要通过间隙泄漏的显影剂,以完全防止显影剂的泄漏。