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    Developing devices for use in electrophotographic apparatus
    2.
    发明公开
    Developing devices for use in electrophotographic apparatus 失效
    Geräte电子照相机。

    公开(公告)号：EP0613065A1

    公开(公告)日：1994-08-31

    申请号：EP94107536.8

    申请日：1990-05-31

    申请人： FUJITSU LIMITED

    发明人： Nishino, Yukio ,  Hirose, Kazunori

    IPC分类号： G03G15/08

    CPC分类号： G03G15/0896 ,  G03G15/0806 ,  G03G15/0812 ,  G03G15/0817 ,  G03G15/0855 ,  G03G15/0856 ,  G03G15/0889 ,  G03G2215/0617 ,  G03G2215/0636

    摘要： A developing device, for use with a one-component developer composed of coloured fine synthetic resin toner particles, comprises a vessel (118), supported so as to be movable towards and away from a photosensitive drum (126), for holding the developer, and a developing roller rotatably provided within the vessel (118), a portion of the roller being exposed from the vessel and resiliently pressed against a surface of the photosensitive drum (126) when the device is in use. The toner particles are entrained by the developing roller to form a developer layer therearound, and are carried to the surface of the photosensitive drum (126) for development of an electrostatic latent image formed thereon. An electric motor (130) for rotating the developing roller is attached to the vessel so as to move therewith relative to the photosensitive drum. In this way, the developing roller can be pressed stably and uniformly against the drum even when the motor is working.

    摘要翻译： 与由有色合成树脂调色剂颗粒组成的单组分显影剂一起使用的显影装置包括一个可以朝向和远离感光鼓（126）被支撑以容纳显影剂的容器（118） 以及可旋转地设置在所述容器（118）内的显影辊，当所述装置在使用时，所述辊的一部分从所述容器暴露并弹性地压靠在所述感光鼓（126）的表面上。 调色剂颗粒被显影辊夹带以在其周围形成显影剂层，并被携带到感光鼓（126）的表面，用于显影形成在其上的静电潜像。 用于旋转显影辊的电动机（130）被附接到容器以便相对于感光鼓与其一起移动。 以这种方式，即使在电动机工作时，也可以将显影辊稳定地均匀地压向滚筒。

    Electrostatic latent image developing devices
    3.
    发明公开
    Electrostatic latent image developing devices 失效
    静电图像显影装置

    公开(公告)号：EP0389241A3

    公开(公告)日：1992-04-15

    申请号：EP90302971.8

    申请日：1990-03-20

    申请人： FUJITSU LIMITED

    发明人： Nishio, Yukio ,  Hirose, Kazunori

    IPC分类号： G03G15/08

    CPC分类号： G03G15/0812 ,  G03G2215/0614 ,  G03G2215/0636

    摘要： An electrostatic latent image developing device (28) of the type having a regulating member (28c) urged resiliently towards a surface portion of a developing roller (28b) of the device (28) so that an edge (28c₃) of the regulating member (28c) nearest to the said surface portion and parallel thereto serves to regulate the thickness of layer of toner particles carried on the roller (28b) when the device (28) is in use is characterised in that the angle of the cross-section of the said regulating member (28c) at the said edge (28c₃) is in the range from 90° to 180°. Alternatively, the edge (28c₃) may have a rounded cross-section. In each case, the edge is less susceptible to damage and correct regulation of the thickness of the toner layer can be achieved more reliably. A pivotally-mounted regulating member, and a regulating member provided with a guard element for deflecting toner particles, are also disclosed, as is a foam rubber developing roller whose surface has pores, each pore being in diameter no more than twice the average diameter of the toner particles.

    Developing device used in electrophotographic field
    4.
    发明公开
    Developing device used in electrophotographic field 失效
    电子显示领域中使用的开发设备

    公开(公告)号：EP0388191A3

    公开(公告)日：1992-04-15

    申请号：EP90302748.0

    申请日：1990-03-15

    申请人： FUJITSU LIMITED

    发明人： Hirose, Kazunori ,  Nishio, Yukio

    IPC分类号： G03G15/08

    CPC分类号： G03G15/0815 ,  G03G2215/0617 ,  G03G2215/0636

    摘要： A developing device (28) using a one-component developer composed of colored fine synthetic resin stoner particles, which device comprises a vessel (28a) for holding the developer, and a developing roller (28b) rotatably provided within the vessel (28a), a portion thereof being exposed therefrom and resiliently pressed against a surface of an electrostatic latent image formation drum (24). The toner particles are held by the surface of the developing roller (28b) to form a developer layer therearound, and are carried to the surface of the image formation drum (24) for development of an electrostatic latent image formed thereon. THe developing device further comprises a toner-removing roller (28d) rotatably provided within the vessel to be in contact with the developing roller (28b) for mechanically removing the remaining toner particles not used for the development of the image from the developing roller, and a blade or roller member (28c) provided within the vessel and resiliently engaged with the developing roller (28b), for regulating a thickness of the developer layer formed around the developing roller. The toner-removing roller (28d) is formed of a conductive porous rubber material so that pore openings appear over a surface of the toner-removing roller, and the pore openings have a diameter which is at most twice an average diameter of the toner particles, whereby a penetration of the toner particles into the toner-removing roller (28b) is prevented.

    Electrophotographic developing apparatus
    5.
    发明公开
    Electrophotographic developing apparatus 失效
    电子照相机（Entwicklungsgerät）

    公开(公告)号：EP0404561A2

    公开(公告)日：1990-12-27

    申请号：EP90306778.3

    申请日：1990-06-21

    申请人： FUJITSU LIMITED

    发明人： Nishio, Yukio ,  Kera, Hiroshi ,  Tonomoto, Yoshihiro ,  Hirose, Kazunori

    IPC分类号： G03G15/08 ,  G03G15/06

    CPC分类号： G03G15/065 ,  G03G15/0806 ,  G03G15/0812 ,  G03G2215/0614 ,  G03G2215/0636

    摘要： Image developing apparatus, for developing a latent electrostatic image, includes a container (12), for holding a supply of toner particles (D), and a developing roller (18) made of an electrically-conductive elastomeric material and supported for rotation in contact with toner particles in the container so as to entrain a layer of such particles and carry them to a location at which the roller engages a surface bearing such an image. A blade member (22) is pressed against the developing roller for regulating the thickness of the said layer, and respective bias voltages are applied to the developing roller and to the blade member for ensuring that the toner particles of the said layer are electrically charged in a desired manner and/or for preventing electrostatic adhesion of such particles to the blade member.
    Danger of localised damage due to electrical current flow between the blade member and the developing roller, prior to attainment of its normal speed of rotation, is reduced by delaying application of the bias voltages for a preset period of time after initiation of the said rotation.
    When such rotation is to be stopped, by termination of a drive signal (DS) maintaining that rotation, the application of the bias voltage to the blade member is terminated at a first instant. The drive signal is then terminated at a second instant, a predetermined short period of time after the said first instant, the application of the bias voltage to the developing roller being maintained until the said second instant, thereby to encourage separation of toner particles from the roller during that predetermined short period.

    摘要翻译： 用于显影静电潜像的图像显影装置包括用于保持调色剂颗粒（D）供应的容器（12）和由导电弹性体材料制成并被支撑以接触旋转的显影辊（18） 在容器中具有调色剂颗粒，以便夹带一层这样的颗粒并将它们带到辊子与承载这种图像的表面接合的位置。 叶片构件（22）被压靠在显影辊上用于调节所述层的厚度，并且将相应的偏置电压施加到显影辊和叶片构件，以确保所述层的调色剂颗粒带电 期望的方式和/或用于防止这些颗粒对叶片构件的静电附着。 在达到其正常转速之前，由于叶片构件和显影辊之间的电流流动导致的局部损坏的危险通过在所述旋转开始之后延迟施加偏置电压达预设的时间来减少。 当这样的旋转停止时，通过维持该旋转的驱动信号（DS）的终止，施加到叶片构件的偏置电压在第一时刻终止。 然后，驱动信号在第二时刻终止，在所述第一时刻之后的预定的短时间段内，向显影辊施加偏置电压直到所述第二时刻，从而促使调色剂颗粒从 在预定的短时间内滚动。

    Developing device used in electrophotographic field
    6.
    发明公开
    Developing device used in electrophotographic field 失效
    Entwicklungsvorrichtung，nutzbar auf elektrophotographischem Gebiet。

    公开(公告)号：EP0388191A2

    公开(公告)日：1990-09-19

    申请号：EP90302748.0

    申请日：1990-03-15

    申请人： FUJITSU LIMITED

    发明人： Hirose, Kazunori ,  Nishio, Yukio

    IPC分类号： G03G15/08

    CPC分类号： G03G15/0815 ,  G03G2215/0617 ,  G03G2215/0636

    摘要： A developing device (28) using a one-component developer composed of colored fine synthetic resin stoner particles, which device comprises a vessel (28a) for holding the developer, and a developing roller (28b) rotatably provided within the vessel (28a), a portion thereof being exposed therefrom and resiliently pressed against a surface of an electrostatic latent image formation drum (24). The toner particles are held by the surface of the developing roller (28b) to form a developer layer therearound, and are carried to the surface of the image formation drum (24) for development of an electrostatic latent image formed thereon. THe developing device further comprises a toner-removing roller (28d) rotatably provided within the vessel to be in contact with the developing roller (28b) for mechanically removing the remaining toner particles not used for the development of the image from the developing roller, and a blade or roller member (28c) provided within the vessel and resiliently engaged with the developing roller (28b), for regulating a thickness of the developer layer formed around the developing roller. The toner-removing roller (28d) is formed of a conductive porous rubber material so that pore openings appear over a surface of the toner-removing roller, and the pore openings have a diameter which is at most twice an average diameter of the toner particles, whereby a penetration of the toner particles into the toner-removing roller (28b) is prevented.

    摘要翻译： 一种显影装置（28），其使用由有色精细合成树脂石英颗粒组成的单组分显影剂，该装置包括用于保持显影剂的容器（28a）和可旋转地设置在容器（28a）内的显影辊（28b） 其一部分从其暴露并弹性压靠静电潜像形成鼓（24）的表面。 调色剂颗粒由显影辊（28b）的表面保持以在其周围形成显影剂层，并且被携带到图像形成鼓（24）的表面，用于显影形成在其上的静电潜像。 该显影装置还包括可旋转地设置在容器内以与显影辊（28b）接触的调色剂去除辊（28d），用于机械地从显影辊中除去不用于显影图像的剩余调色剂颗粒，以及 设置在容器内并与显影辊（28b）弹性接合的刀片或辊构件（28c），用于调节在显影辊周围形成的显影剂层的厚度。 调色剂除去辊（28d）由导电多孔橡胶材料形成，使得孔隙出现在调色剂去除辊的表面上，并且孔口的直径为调色剂颗粒的平均直径的至多两倍 从而防止调色剂颗粒穿透调色剂去除辊（28b）。