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    • 2. 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。
    • 5. 发明授权
    • Image forming apparatus, process cartridge, image forming method and developer for electrophotography
    • 图像形成装置,处理盒,图像形成方法和用于电子照相的显影剂
    • US08213833B2
    • 2012-07-03
    • US12013108
    • 2008-01-11
    • Shinichiro YagiTomio KondouMasashi NagayamaHltoahi Iwatsuki
    • Shinichiro YagiTomio KondouMasashi NagayamaHltoahi Iwatsuki
    • G03G15/08
    • G03G9/1139G03G9/107G03G9/1075G03G9/1131G03G9/1133G03G9/1136G03G15/0872G03G15/0877G03G15/0879
    • An image forming apparatus including at least an image bearer; a charger charging the image bearer; an irradiator irradiating the image bearer to form an electrostatic latent image thereon; an image developer developing the electrostatic latent image with a developer comprising a toner and a carrier to form a toner image on the image bearer; a developer feeder feeding a supplemental developer including the toner and the carrier into the image developer; and a developer collector collecting the developer in the image developer, wherein the developer feeder includes a cylindrical supplemental developer container containing the supplemental developer, including a spiral developer guide race on the inner circumferential surface thereof; and a sub-hopper configured to store the supplemental developer, and wherein the carrier includes a core material; and a layer coated on the core material, including a binder resin and non-black or a non-color inorganic particulate material.
    • 一种图像形成装置,至少包括图像载体; 一个充电器对图像承载器充电; 照射所述图像载体以在其上形成静电潜像的照射器; 使用包含调色剂和载体的显影剂显影静电潜像的图像显影剂,以在图像载体上形成调色剂图像; 显影剂供给器,将包括调色剂和载体的补充显影剂进料到图像显影剂中; 以及显影剂收集器,其收集图像显影剂中的显影剂,其中显影剂供给器包括容纳补充显影剂的圆柱形补充显影剂容器,在其内圆周表面上包括螺旋显影剂引导座圈; 以及副料斗,其构造成存储所述补充显影剂,并且其中所述载体包括芯材料; 以及涂覆在芯材上的层,包括粘合剂树脂和非黑色或非彩色无机颗粒材料。