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    Magnetic roller, developer carrier, developing device, process cartridge, and image forming apparatus
    4.
    发明公开
    Magnetic roller, developer carrier, developing device, process cartridge, and image forming apparatus 审中-公开
    Magnetwalze，Entwicklerträger，Entwicklungsvorrichtung，Prozesskartusche und Bilderzeugungsvorrichtung

    公开(公告)号：EP2101225A1

    公开(公告)日：2009-09-16

    申请号：EP09154651.5

    申请日：2009-03-09

    申请人： Ricoh Company, Ltd.

    发明人： Innami, Takashi ,  Koetsuka, Kyohta ,  Takano, Yoshiyuki ,  Hattori, Tadaaki ,  Kamiya, Noriyuki ,  Ohsawa, Masayuki ,  Terashima, Mieko ,  Suzuki, Rei ,  Abe, Hiroya

    IPC分类号： G03G15/09

    CPC分类号： G03G15/0921 ,  G03G2215/0634

    摘要： A magnetic roller includes a cylindrical magnetic field generation part (140), a cylindrical support part (143) that contacts both of the edges of the magnetic field generation part (140), further has a smaller diameter than the magnetic field generation part (140), and which is installed upon a common axis thereof as an axis of the cylindrical support part (143), and a depression part (140c) that is installed upon an obverse surface of the cylindrical magnetic field generation part (140), extends in a direction of the axis of the magnetic field generation part (140), and wherein a lengthwise magnet formation is inserted. The cylindrical magnetic field generation part (140) is configured of a main body portion (140a), which is installed upon a central portion of the cylindrical magnetic field generation part (140), and a reinforcing portion (140b), which is installed upon each of both ends, wherein the depression part (140c) is installed across the main body portion (140a) of the magnetic field generation part (140) overall, and the reinforcing portion (140b) is installed between both ends of the depression part (140c) and both ends of the support part.

    摘要翻译： 磁性辊包括圆柱形磁场产生部分（140），与磁场产生部分（140）的两个边缘接触的圆柱形支撑部分（143），还具有比磁场产生部分（140）更小的直径 ），并且其安装在作为圆柱形支撑部件（143）的轴线的共同轴线上，并且安装在圆柱形磁场产生部件（140）的正面上的凹陷部分（140c）延伸在 磁场产生部分（140）的轴线方向，并且其中纵向磁体形成被插入。 圆柱形磁场产生部分（140）由安装在圆柱形磁场产生部分（140）的中心部分上的主体部分（140a）和加强部分（140b）构成，该加强部分安装在 其中，所述凹部（140c）整体地安装在所述磁场产生部（140）的主体部（140a）上，所述加强部（140b）安装在所述凹部（140c）的两端 140c）和支撑部分的两端。

    Magnetic field generating member and manufacturing method thereof
    5.
    发明公开
    Magnetic field generating member and manufacturing method thereof 有权
    Magnetfelderzeugendes元素和Herstellungsverfahrendafür

    公开(公告)号：EP2077470A1

    公开(公告)日：2009-07-08

    申请号：EP09150003.3

    申请日：2009-01-02

    申请人： Ricoh Company, Ltd.

    发明人： Takano, Yoshiyuki ,  Koetsuka, Kyohta ,  Kamiya, Noriyuki ,  Ohsawa, Masayuki ,  Terashima, Mieko ,  Suzuki, Rei ,  Abe, Hiroya ,  Innami, Takashi ,  Hattori, Tadaaki

    IPC分类号： G03G15/09

    CPC分类号： G03G15/0921 ,  Y10T29/49075

    摘要： A magnetic field generating member with high stiffness and small size, an image development device, a process cartridge and an image forming apparatus including the magnetic field generating member as well as a manufacturing method of the magnetic field generating member are provided where the magnetic field generating member includes a main body (140), a groove (144) provided in the main body (140), an interposition member (142) configured to be fitted in the groove (144) of the main body (140) and including a concave portion (1423) and a magnetic member as a long magnetic compact (141) fixed into the concave portion (1423) of the interposition member (142).

    摘要翻译： 提供具有高刚度和小尺寸的磁场产生部件，图像显影装置，处理盒和包括磁场产生部件的图像形成装置以及磁场产生部件的制造方法，其中产生磁场 构件包括主体（140），设置在主体（140）中的凹槽（144），构造成嵌入主体（140）的凹槽（144）中的插入构件（142） 部分（1423）和固定到插入部件（142）的凹部（1423）中的长磁性体（141）的磁性部件。

    Development roller, surface treatment device and wire member
    8.
    发明公开
    Development roller, surface treatment device and wire member 有权
    Entwicklungswalze und Vorrichtung zurOberflächenbehandlung

    公开(公告)号：EP1762907A1

    公开(公告)日：2007-03-14

    申请号：EP06019142.6

    申请日：2006-09-13

    申请人： Ricoh Company, Ltd.

    发明人： Kamiya, Noriyuki ,  Imamura, Tsuyoshi ,  Kamoi, Sumio ,  Koetsuka, Kyohta ,  Takano, Yoshiyuki ,  Terashima, Mieko ,  Terashima, Satoshi ,  Abe, Hiroya ,  Nakamura, Shigeharu ,  Watanabe, Masaki

    IPC分类号： G03G15/09 ,  B24B31/10

    CPC分类号： B24B31/102 ,  G03G15/0928 ,  G03G2215/0609 ,  Y10T29/49544

    摘要： A development roller, including a development sleeve disposed near a photo conductive drum, a magnetic roller disposed in the development sleeve, and a supplying device configured to supply a developer including a toner and a magnetic carrier to the photo conductive drum uniformly, the development sleeve having an outer surface on which the developer including the toner and the magnetic carrier is attached by a magnetic force of the magnetic roller.
    The development sleeve is roughened with cylindrical abrasive particles to control toner density variations over time.
    The roughness along the sleeve length can be varied to provide uniform toner density along the length of the sleeve.

    摘要翻译： 一种显影辊，包括设置在光导体鼓附近的显影套筒，设置在显影套筒中的磁性辊，以及供应装置，其被配置为将包括调色剂和磁性载体的显影剂均匀地供应到光导鼓上，显影套筒 具有外表面，包含调色剂的显影剂和磁性载体通过磁辊的磁力附着在该外表面上。 显影套筒用圆柱形磨料颗粒进行粗糙化，以控制随着时间的变化。 可以改变沿着套管长度的粗糙度以提供沿着套筒长度的均匀调色剂密度。