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    • 5. 发明申请
    • Developing Device, Image Forming Apparatus, and Method of Manufacturing Developing Device
    • 显影装置,图像形成装置以及制造显影装置的制造方法
    • US20090290900A1
    • 2009-11-26
    • US12429084
    • 2009-04-23
    • Masahiro MAEDATomohiro ARUGAYoichi YAMADATakatomo FUKUMOTO
    • Masahiro MAEDATomohiro ARUGAYoichi YAMADATakatomo FUKUMOTO
    • G03G15/08
    • G03G15/0818G03G15/0898
    • A developing device includes: a housing that stores toner therein; a toner carrying roller that is attached to the housing by a shaft and is rotated in a predetermined rotation direction while carrying charged toner on a surface of the toner carrying roller to transport the toner to the outside of the housing; and a seal member that extends in a direction of a rotation axis of the toner carrying roller and has one end fixed to the housing and the other end in contact with the surface of the toner carrying roller to prevent the toner from leaking out of the housing, wherein a plurality of convex portions having top surfaces constituting a part of the same cylindrical surface are formed on the surface of the toner carrying roller, and at least a part of the seal member in contact with the surface of the toner carrying roller is made of a material having a contact angle of 105° or more with respect to water.
    • 显影装置包括:在其中存储调色剂的壳体; 调色剂承载辊,其通过轴附接到壳体并且在将带电调色剂携带在调色剂承载辊的表面上以预定的旋转方向旋转以将调色剂输送到壳体的外部; 以及密封构件,其沿着调色剂承载辊的旋转轴线的方向延伸,并且一端固定到壳体,另一端与调色剂承载辊的表面接触,以防止调色剂从壳体泄漏 其中,在调色剂承载辊的表面上形成有多个凸起部分,其具有构成同一圆柱形表面的一部分的顶表面,并且与该调色剂承载辊的表面接触的密封件的至少一部分被制成 相对于水的接触角为105°以上的材料。