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    • 3. 发明申请
    • IMAGE FORMING APPARATUS
    • 图像形成装置
    • US20090074450A1
    • 2009-03-19
    • US12209607
    • 2008-09-12
    • Masashi NAGAYAMATomio KondouShinichiro YagiHitoshi Iwatsuki
    • Masashi NAGAYAMATomio KondouShinichiro YagiHitoshi Iwatsuki
    • G03G21/18G03G15/08
    • G03G15/0893G03G15/0874G03G15/0877G03G15/0879G03G2215/0822G03G2215/0838
    • An image forming apparatus including an image bearing member; and a developing device including a developer bearing member, a developer containing portion, a developer supplying passage supplying the developer to the developer bearing member while feeding the developer in a direction, and a developer agitating passage feeding a mixture of the developer fed through the developer supplying passage without used for developing, and the developer used for developing, in the opposite direction. The developer supplying passage, and developer agitating passage are separated from each other except for at least both the end portions. The developer includes a toner and a carrier having a cover layer thereon, which includes a binder resin and a particulate material. The ratio of the volume average particle diameter of the particulate material to the average thickness of the resinous portion of the cover layer is greater than 1 and less than 10.
    • 一种图像形成装置,包括图像承载部件; 以及显影装置,其包括显影剂承载部件,显影剂容纳部分,在将显影剂沿方向供给显影剂的同时将显影剂供应到显影剂承载部件的显影剂供给通道,以及供给通过显影剂的显影剂的混合物的显影剂搅拌通道 不用于显影的供给通道和用于显影的显影剂在相反方向上。 显影剂供给通道和显影剂搅拌通道彼此分开,至少至少两个端部。 显影剂包括调色剂和其上具有覆盖层的载体,其包括粘合剂树脂和颗粒材料。 颗粒材料的体积平均粒径与覆盖层的树脂部分的平均厚度之比大于1且小于10。
    • 5. 发明授权
    • Image forming apparatus for use with carrier including a core and cover layer
    • 用于与包括芯和覆盖层的载体一起使用的图像形成装置
    • US08086143B2
    • 2011-12-27
    • US12209607
    • 2008-09-12
    • Masashi NagayamaTomio KondouShinichiro YagiHitoshi Iwatsuki
    • Masashi NagayamaTomio KondouShinichiro YagiHitoshi Iwatsuki
    • G03G15/08
    • G03G15/0893G03G15/0874G03G15/0877G03G15/0879G03G2215/0822G03G2215/0838
    • An image forming apparatus including an image bearing member; and a developing device including a developer bearing member, a developer containing portion, a developer supplying passage supplying the developer to the developer bearing member while feeding the developer in a direction, and a developer agitating passage feeding a mixture of the developer fed through the developer supplying passage without used for developing, and the developer used for developing, in the opposite direction. The developer supplying passage, and developer agitating passage are separated from each other except for at least both the end portions. The developer includes a toner and a carrier having a cover layer thereon, which includes a binder resin and a particulate material. The ratio of the volume average particle diameter of the particulate material to the average thickness of the resinous portion of the cover layer is greater than 1 and less than 10.
    • 一种图像形成装置,包括图像承载部件; 以及显影装置,其包括显影剂承载部件,显影剂容纳部分,在将显影剂沿方向供给显影剂的同时将显影剂供应到显影剂承载部件的显影剂供给通道,以及供给通过显影剂的显影剂的混合物的显影剂搅拌通道 不用于显影的供给通道和用于显影的显影剂在相反方向上。 显影剂供给通道和显影剂搅拌通道彼此分开,至少至少两个端部。 显影剂包括调色剂和其上具有覆盖层的载体,其包括粘合剂树脂和颗粒材料。 颗粒材料的体积平均粒径与覆盖层的树脂部分的平均厚度之比大于1且小于10。