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    Image forming apparatus and developing device with improved self toner density control
    6.
    发明授权
    Image forming apparatus and developing device with improved self toner density control 有权
    具有改进的自身调色剂浓度控制的图像形成装置和显影装置

    公开(公告)号：US06337957B1

    公开(公告)日：2002-01-08

    申请号：US09597405

    申请日：2000-06-21

    申请人： Shinji Tamaki ,  Tsuyoshi Imamura ,  Hideo Yoshizawa ,  Junichi Terai ,  Masayuki Yamane ,  Kiyonori Tsuda ,  Kazuhisa Sudo ,  Shinichi Kawahara ,  Shunji Katoh ,  Mikio Ishibashi ,  Tokuya Ohjimi

    发明人： Shinji Tamaki ,  Tsuyoshi Imamura ,  Hideo Yoshizawa ,  Junichi Terai ,  Masayuki Yamane ,  Kiyonori Tsuda ,  Kazuhisa Sudo ,  Shinichi Kawahara ,  Shunji Katoh ,  Mikio Ishibashi ,  Tokuya Ohjimi

    IPC分类号： G03G1508

    CPC分类号： G03G15/09 ,  G03G15/081 ,  G03G2215/0634

    摘要： A developing device includes a developer bearing member including an internal magnetic field generating device and configured such that a surface thereof moves to carry and convey a developer including toner and carrier. A developer regulating member regulates a quantity of the developer carried and conveyed by the developer bearing member toward a developing area, and a developer accommodating unit accommodates the developer regulated to be conveyed toward the developing area by the developer regulating member. A toner accommodating unit includes a toner supplying opening opposing a surface of the developer bearing surface of the developer bearing member at a position adjacent to and upstream of the developer accommodating unit in a developer conveying direction. The toner in the toner accommodating unit is taken into the developer on the developer bearing member based on a toner density of the developer on the developer bearing member by a movement of the developer with a conveyance of the developer on the developer bearing member. The developing device further includes a peeling off member that opposes, without contacting, a surface of the developer bearing member in the developer accommodating unit so as to peel off an upper layer part of the developer carried and conveyed by the developer bearing member.

    摘要翻译： 显影装置包括显影剂承载构件，该显影剂承载构件包括内部磁场产生装置，并且构造成使得其表面移动以携带并传送包括调色剂和载体的显影剂。 显影剂调节构件调节由显影剂承载构件承载并运送到显影区域的显影剂的量，并且显影剂容纳单元容纳通过显影剂调节构件调节成朝向显影区域传送的显影剂。 调色剂容纳单元包括在显影剂输送方向上与显影剂容纳单元相邻并且在显影剂容纳单元的上游的位置处与显影剂承载构件的显影剂承载表面的表面相对的调色剂供给口。 基于显影剂承载部件上的显影剂的调色剂浓度，显影剂通过显影剂承载部件上的显影剂传送，调色剂容纳单元中的调色剂被引入显影剂承载部件上的显影剂中。 显影装置还包括剥离构件，其与显影剂承载构件的显影剂容纳单元的表面相对而不接触，从而剥离由显影剂承载构件承载和输送的显影剂的上层部分。

    Developing device with improved developer circulation and toner density control
    7.
    发明授权
    Developing device with improved developer circulation and toner density control 有权
    显影装置具有改进的显影剂循环和调色剂浓度控制

    公开(公告)号：US06198895B1

    公开(公告)日：2001-03-06

    申请号：US09500167

    申请日：2000-02-08

    申请人： Kiyonori Tsuda ,  Tsuyoshi Imamura ,  Shunji Katoh ,  Hideo Yoshizawa ,  Shinji Tamaki ,  Masayuki Yamane

    发明人： Kiyonori Tsuda ,  Tsuyoshi Imamura ,  Shunji Katoh ,  Hideo Yoshizawa ,  Shinji Tamaki ,  Masayuki Yamane

    IPC分类号： G03G1508

    CPC分类号： G03G15/09

    摘要： A developing device for an image forming apparatus includes a developer carrier such as a developing sleeve having a magnetic field generating device therein which carries and conveys a developer containing toner and magnetic carrier particles. The developing device also includes a first regulating member such as a blade which regulates the developer being carried and conveyed by the developer carrier, and a developer storing section stores developer scraped off the developer carrier by the first regulating member. The developer storing section includes a second regulating member arranged upstream of the first regulating member with respect to a direction in which the developer carrier conveys the developer. The developing device further includes a toner storing section provided adjacent to the developer storing section to supply toner to the developer carrier. A contact condition of the developer carried on the developer carrier with the toner supplied to the developer carrier from the toner storing section is varied in accordance with variation of a toner density in the developer carried on the developer carrier to thereby vary a condition of the developer on the developer carrier to attract the toner. The second regulating member is spaced from the developer carrier such that when a thickness of a layer of the developer on the developer carrier increases due to an increase of the toner density in the developer on the developer carrier, the second regulating member regulates an increased amount of the developer being carried and conveyed by the developer carrier. The magnetic fields, toner speeds, and distances of the regulating members to the developer carrier satisfy predetermined conditions in different embodiments.

    摘要翻译： 用于图像形成装置的显影装置包括显影剂载体，例如显影套筒，其中具有磁场产生装置，其中携带和传送含有调色剂和磁性载体颗粒的显影剂。 显影装置还包括第一调节构件，例如叶片，其调节由显影剂载体承载和输送的显影剂，并且显影剂储存部分存储由第一调节构件刮出显影剂载体的显影剂。 显影剂存储部分包括相对于显影剂载体传送显影剂的方向布置在第一调节构件的上游的第二调节构件。 显影装置还包括与显影剂存储部分相邻设置的调色剂存储部分，以向调色剂载体提供调色剂。 显影剂载体上携带有显影剂载体的显影剂与调色剂存储部分供应到显影剂载体的调色剂的接触状态根据显影剂载体上携带的显影剂中的调色剂浓度的变化而变化，从而改变显影剂的状态 在显影剂载体上吸引调色剂。 第二调节构件与显影剂载体间隔开，使得当显影剂载体上的显影剂中的调色剂密度增加时显影剂载体上的显影剂层的厚度增加时，第二调节构件调节增加的量 的显影剂由显影剂载体携带和传送。 在不同的实施例中，磁场，调色剂速度和调节构件到显影剂载体的距离满足预定条件。

    Image forming apparatus and developing apparatus preventing uneven image density
    8.
    发明授权
    Image forming apparatus and developing apparatus preventing uneven image density 有权
    防止图像浓度不均匀的图像形成装置和显影装置

    公开(公告)号：US06522855B1

    公开(公告)日：2003-02-18

    申请号：US09565539

    申请日：2000-05-05

    申请人： Shunji Katoh ,  Hideo Yoshizawa ,  Shinji Tamaki ,  Junichi Terai ,  Kiyonori Tsuda ,  Tsuyoshi Imamura ,  Masayuki Yamane ,  Kazuhisa Sudo ,  Shinichi Kawahara

    发明人： Shunji Katoh ,  Hideo Yoshizawa ,  Shinji Tamaki ,  Junichi Terai ,  Kiyonori Tsuda ,  Tsuyoshi Imamura ,  Masayuki Yamane ,  Kazuhisa Sudo ,  Shinichi Kawahara

    IPC分类号： G03G1508

    CPC分类号： G03G15/09

    摘要： A developing apparatus for use in an image forming apparatus includes a developer bearing member having a magnetic field generating device internally and configured to bear and convey two-component developer including toner and magnetic carrier, a first regulating member configured to regulate an amount of the developer born and conveyed by the developer bearing member, a developer container section for storing the developer scraped off by the first regulating member, a second regulating member arranged upstream of the first regulating member in a conveying direction of the developer on the developer bearing member, and a toner container section for supplying toner to the developer bearing member. The developing apparatus changes a toner take-in condition of the developer on the developer bearing member by changing a contact condition between the developer and the toner according to a change of a toner density of the developer on the developer bearing member. A surface of the second regulating member facing the developer bearing member has an area large enough to unify a layer thickness of the developer on the image bearing member in the axial direction of the developer bearing member.

    摘要翻译： 用于图像形成装置的显影装置包括：显影剂承载部件，其具有内部的磁场产生装置，并构造成承载和输送包括调色剂和磁性载体的双组分显影剂;第一调节部件，其构造成调节显影剂的量 由显影剂承载部件承载和传送的显影剂容器部分，用于存储由第一调节部件刮掉的显影剂的显影剂容器部分，在显影剂承载部件上的显影剂的输送方向上布置在第一调节部件的上游的第二调节部件， 用于向显影剂承载部件供应调色剂的调色剂容器部分。 根据显影剂承载部件上的显影剂的调色剂密度的变化，显影装置通过改变显影剂和调色剂之间的接触状态来改变显影剂承载部件上的显影剂的调色剂接收状态。 第二调节构件面向显影剂承载构件的表面具有足够大的面积以使图像承载构件上的显影剂的层厚度沿显影剂承载构件的轴向统一。

    Powder container and image forming apparatus incorporating same
    10.
    发明授权
    Powder container and image forming apparatus incorporating same 有权

    公开(公告)号：US09753401B2

    公开(公告)日：2017-09-05

    申请号：US15182088

    申请日：2016-06-14

    申请人： Masayuki Yamane ,  Takeroh Kurenuma ,  Masahiro Watanabe

    发明人： Masayuki Yamane ,  Takeroh Kurenuma ,  Masahiro Watanabe

    IPC分类号： G03G15/08

    CPC分类号： G03G15/0865 ,  G03G15/0872

    摘要： A powder container includes a rotatable powder storage to store powder for image formation, a conveyor to transport the powder inside the powder storage, and a scooping portion to scoop the powder inside the powder storage. The conveyor transports the powder in a powder conveyance direction parallel to a rotation axis of the powder storage toward an opening at one end of the powder storage. The scooping portion causes the powder to flow to the opening. The scooping portion includes a scooping face extending from an inner face of the powder storage toward the rotation axis of the powder storage, and a rim disposed along an inner end of the scooping face in a diameter direction of the powder storage, and at least a portion of the rim protruding downstream beyond the scooping face in a rotation direction of the powder storage.