System for removing foreign matter on photosensitive body or developer
carrying body in image forming apparatus
    1.
    发明授权
    System for removing foreign matter on photosensitive body or developer carrying body in image forming apparatus 失效
    用于在图像形成装置中去除感光体或显影剂携带体上的异物的系统

    公开(公告)号:US5278621A

    公开(公告)日:1994-01-11

    申请号:US881966

    申请日:1992-05-12

    CPC分类号: G03G21/0047 G03G15/169

    摘要: A system for removing foreign matter on a photosensitive body or a developer carrying body in an image forming apparatus, in which a foreign matter removing unit 11 is arranged between a discharge lamp 7 and a transfer drum 9, the foreign matter removing unit 11 having a rotatable cylindrical electrode 11a that closely confronts a photosensitive body 2 at a predetermined distance. A high-voltage sinusoidal wave generator 12 whose frequency, dc component potential, and effective potential are variable is connected to the cylindrical electrode 11a. An ac electric field is generated between the cylindrical electrode 11a and the photosensitive body 2 by the high-voltage sinusoidal wave generator 12 and aggregates of toner particles whose size is larger than that of toner particles are resonated by the ac electric field. Application of a very weak dc electric field under this condition causes the aggregates of toner particles to move toward the cylindrical electrode 11a. As a result of the above construction, small foreign matter such as an aggregate of toner particles whose size is about 100 .mu.m or a carrier adhering to the surface of the photosensitive body, or foreign matter contained in a developer on the developer carrying body can be removed surely without disturbing normal toner particles.

    摘要翻译: 一种用于在图像形成装置中的感光体或显影剂携带体上除去异物的系统,其中在放电灯7和转印鼓9之间布置有异物去除单元11,异物除去单元11具有 可旋转的圆柱形电极11a以预定距离紧密地面对感光体2。 其频率,直流分量电位和有效电位可变的高压正弦波发生器12连接到圆柱形电极11a。 通过高压正弦波发生器12在圆柱形电极11a和感光体2之间产生交流电场,其尺寸大于调色剂颗粒的调色剂颗粒的聚集体由交流电场共振。 在该条件下施加非常弱的直流电场使得调色剂颗粒的聚集体朝向圆柱形电极11a移动。 作为上述结构的结果,小的异物例如尺寸为约100(μm)的调色剂颗粒的聚集体或附着在感光体表面上的载体,或携带着显影剂的显影剂中包含的异物 身体可以被确实地移除,而不会干扰正常的调色剂颗粒。

    Magnetic brush developer device
    4.
    发明授权
    Magnetic brush developer device 失效
    磁刷显影装置

    公开(公告)号:US4194465A

    公开(公告)日:1980-03-25

    申请号:US846655

    申请日:1977-10-28

    IPC分类号: G03G15/08 G03G15/09 G03G13/09

    CPC分类号: G03G15/0942 G03G15/0898

    摘要: A magnetic brush developing device for a xerographic copying machine is constructed to prevent toner from being leaked out of the developer housing. A magnetic brush roll is provided opposite to a photosensitive member, and at least one air current blade is provided along the lower outer periphery of the surface of the magnetic brush roll. One end of the air current blade is closely adjacent the surface of the photosensitive member, and the other end of the air current blade projects back toward the interior of the developer housing. An air circulating path is defined between the air current blade and the lower outer wall of the developer housing. This air circulating path is effective to conduct entrained air carrying excess toner back into the developer housing.

    摘要翻译: 用于静电复印机的磁刷显影装置被构造成防止调色剂从显影剂外壳泄漏出来。 与感光构件相对设置磁刷辊,沿着磁刷辊的表面的下外周设置至少一个气流刀片。 气流叶片的一端与感光构件的表面紧密相邻,并且气流刀片的另一端向显影器壳体的内部向后突出。 空气循环路径被限定在气流叶片和显影剂壳体的下外壁之间。 这种空气循环路径有效地将携带多余的调色剂的夹带的空气带回显影剂外壳。

    Developing unit
    5.
    发明授权
    Developing unit 失效
    开发单位

    公开(公告)号:US5529628A

    公开(公告)日:1996-06-25

    申请号:US531068

    申请日:1995-09-20

    IPC分类号: G03G15/08 G03G15/09 H01F7/02

    CPC分类号: G03G15/0921

    摘要: A developing roll includes a tubular sleeve driven for turn, and a magnet roll fixedly supported. An intensively magnetized block, shaped like U in cross section, is buried in the magnet roll at a location thereof where the magnet roll faces the latent electrostatic image bearing member. In this case, one side of the intensively magnetized block having a groove formed therein is directed toward the axis of the magnet roll, while the other side thereof is flush with the outer surface of the magnet roll. A material of the intensively magnetized block is more intensively magnetized, by its nature, than a material of the magnet roll. The intensively magnetized block is magnetized to form a single magnetic pole or a developing magnetic pole.

    摘要翻译: 显影辊包括用于转动的管状套筒和固定地支撑的磁辊。 横截面为U形的集中磁化的块被埋在磁辊中,磁体辊的磁性辊面对静电潜像承载部件的位置。 在这种情况下,其中形成有凹槽的集中磁化块的一侧指向磁体辊的轴线,而另一侧与磁体辊的外表面齐平。 强磁化块的材料本质上比磁辊的材料更强烈地磁化。 强磁化块被磁化以形成单个磁极或显影磁极。

    Image forming apparatus and intermediate transfer belt module to efficiently accommodate additional image forming unit
    6.
    发明授权
    Image forming apparatus and intermediate transfer belt module to efficiently accommodate additional image forming unit 失效
    图像形成装置和中间转印带模块,以有效地容纳附加的图像形成单元

    公开(公告)号:US06678493B2

    公开(公告)日:2004-01-13

    申请号:US10097410

    申请日:2002-03-15

    IPC分类号: G03G1501

    摘要: The specification discloses an image forming apparatus which forms a visual image on a belt transfer member by at least one of image forming units and transfers the formed visual image onto a recording medium with the aid of the belt transfer member. In the image forming apparatus, the belt transfer member includes an endless belt wound on a plurality of tension rolls. A bending member, which bends the endless belt toward the inside of a tangential line connecting points on the outer circumferences of a couple of tension rolls, and locates the bent endless belt inside the tangential line, is additionally provided outside the endless belt located between at least the couple of adjacent tension rolls. An image forming unit may be additionally provided within an outside bending concave region of the endless belt, which is bent by the bending member and the tension rolls adjacent to the bending member.

    摘要翻译: 本说明书公开了一种图像形成装置,其通过图像形成单元中的至少一个在带传送构件上形成视觉图像,并且借助于带传送构件将形成的视觉图像转印到记录介质上。 在图像形成装置中,带传送构件包括卷绕在多个张力辊上的环形带。 弯曲构件将环形带朝向连接在一对张力辊的外周上的点的切线的内部弯曲,并且将弯曲的环形带定位在切线内部,另外设置在位于 最少两个相邻的张力辊。 图像形成单元可以附加地设置在环形带的外部弯曲凹入区域中,弯曲构件和与弯曲构件相邻的张紧辊弯曲。

    Developing apparatus
    7.
    发明授权
    Developing apparatus 失效
    开发设备

    公开(公告)号:US5270483A

    公开(公告)日:1993-12-14

    申请号:US034415

    申请日:1993-03-19

    IPC分类号: G03G15/06 G03G15/08 G03G15/09

    摘要: A developing apparatus for developing a latent image on a surface of a photosensitive body by forming a toner cloud in a developing region through electrode wire, in which movably supporting units for supporting electrode supporting unit movably between operative positions and inoperative positions are provided so that the electrode wire supported by the electrode supporting units can be kept in an operative position near to a surface of a developing roll when the electrode supporting units are in their operative positions and, on the other hand, the electrode wire can be kept in an inoperative position far from the surface of the developing roll when the electrode supporting units are in their inoperative positions. Thereby, foreign matters trapped in the electrode wire or accumulated on the electrode wire can be removed easily.

    摘要翻译: 一种显影装置,用于通过在显影区域中通过电极线形成调色剂云来显影感光体表面上的潜像,其中可动支撑单元用于在可操作位置和不工作位置之间可移动地支撑电极支撑单元, 当电极支撑单元处于其操作位置时,由电极支撑单元支撑的电极线可以保持在显影辊表面附近的操作位置,另一方面,电极线可以保持在不工作位置 当电极支撑单元处于其不工作位置时远离显影辊的表面。 由此,能够容易地除去捕获在电极线中或积聚在电极线上的异物。

    Method of developing an electrostatic latent image uses magnetic
developer
    8.
    发明授权
    Method of developing an electrostatic latent image uses magnetic developer 失效
    显影静电潜像的方法使用磁性显影剂

    公开(公告)号:US4499166A

    公开(公告)日:1985-02-12

    申请号:US273283

    申请日:1981-06-15

    申请人: Yoshikazu Okamoto

    发明人: Yoshikazu Okamoto

    CPC分类号: B82Y15/00 G03G13/09

    摘要: A developer mixture used in an electrophotographic printing machine to develop an electrostatic latent image recorded on the photoconductive member includes weakly magnetically attractable toner particles and strongly magnetically attractable carrier granules adhering triboelectrically to one another. The toner particles and carrier granules are substantially the same size. During development, the toner particles are deposited on the latent image forming a toner powder image. Subsequently, the toner powder image is transferred to a copy sheet and permanently fixed thereto.

    摘要翻译: 在电子照相印刷机中用于显影记录在感光体上的静电潜像的显影剂混合物包括弱磁性吸引的调色剂颗粒和摩擦地彼此粘附的强磁吸引载体颗粒。 调色剂颗粒和载体颗粒的尺寸基本相同。 在显影期间,调色剂颗粒沉积在形成调色剂粉末图像的潜像上。 随后,将调色剂粉末图像转印到复印纸上并永久固定。

    Positioning apparatus for magnetic brush developing device
    9.
    发明授权
    Positioning apparatus for magnetic brush developing device 失效
    磁刷显影装置定位装置

    公开(公告)号:US4084542A

    公开(公告)日:1978-04-18

    申请号:US804217

    申请日:1977-06-07

    IPC分类号: G03G15/09

    CPC分类号: G03G15/09

    摘要: An improved magnetic brush developing device mounted adjacent to a photosensitive member has a magnet and a cylinder mounted to rotate around the periphery of the magnet. The magnet is stationary during operation of the device, but the magnet is mounted so that its position relative to the photosensitive member can be changed each time a predetermined number of copies has been made. This arrangement solves two problems caused by developer which has deteriorated from use, the problems being (1) poor reproduction of a low contrast image, and (2) staining the background of an image.

    摘要翻译: 安装在感光构件附近的改进的磁刷显影装置具有安装成围绕磁体周边旋转的磁体和气缸。 在设备的操作期间,磁体是静止的,但是磁体被安装成使得它们相对于感光部件的位置可以在每次进行预定数量的拷贝时被改变。 这种布置解决了由使用恶化的显影剂引起的两个问题,问题是(1)低对比度图像的再现不良,(2)染色图像的背景。