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    • 48. 发明申请
    • Image Forming Apparatus and Image Forming Method
    • 图像形成装置和图像形成方法
    • US20090110428A1
    • 2009-04-30
    • US12254166
    • 2008-10-20
    • Yoichi YAMADA
    • Yoichi YAMADA
    • G03G21/00
    • G03G15/0812G03G15/0818G03G2215/0844
    • An image forming apparatus, includes: an image carrier that carries an electrostatic latent image; a toner carrier roller that is provided, on a surface thereof, with a plurality of convex sections and a concave section which surrounds the convex sections, is shaped approximately like a cylinder, is arranged opposed to the image carrier, and rotates while carrying a toner layer of charged toner on the surface thereof; a bias applier that applies a developing bias voltage to the toner carrier roller; a toner collector that collects the toner carried on the surface of the toner carrier roller at a place downstream to an opposed position facing the image carrier in a rotation direction of the toner carrier roller; a seal member that is interposed between the toner carrier roller and the toner collector, and abuts on the surface of the toner carrier roller to prevent leakage of toner from the toner collector; and a controller that is adapted to perform a toner removal operation which removes toner adherent to the seal member by rotating the toner carrier roller while the toner carrier roller abuts on the seal member, in a condition that at least a part of respective surfaces of the convex sections do not carry toner so as to be exposed.
    • 一种图像形成装置,包括:承载静电潜像的图像载体; 在其表面上设置有多个凸部和围绕凸部的凹部的调色剂承载辊成形为大致像圆筒一样,与图像载体相对设置,并且在携带调色剂的同时旋转 其表面上带电的调色剂层; 偏置施加器,其将显影偏压施加到调色剂承载辊; 调色剂收集器,其在调色剂承载辊的旋转方向上在与图像载体相对的相对位置下游的位置处收集在调色剂承载辊的表面上承载的调色剂; 介于所述调色剂承载辊和所述调色剂收集器之间的密封构件,并邻接所述调色剂承载辊的表面以防止调色剂从所述调色剂收集器泄漏; 以及控制器,其适于执行调色剂去除操作,其在所述调色剂承载辊抵接在所述密封构件上的同时通过使所述调色剂承载辊旋转而去除附着于所述密封构件的调色剂,所述调色剂承载辊在所述调色剂承载辊的至少一部分 凸部不携带调色剂以露出。
    • 49. 发明申请
    • Image Formation Apparatus and Image Formation System
    • 图像形成装置和图像形成系统
    • US20080298851A1
    • 2008-12-04
    • US12121627
    • 2008-05-15
    • Yoichi YAMADAHiroshi KATOTomohiro ARUGATakatomo FUKUMOTO
    • Yoichi YAMADAHiroshi KATOTomohiro ARUGATakatomo FUKUMOTO
    • G03G15/08
    • G03G15/0818G03G2215/0634
    • The invention provides, as an aspect thereof, an image formation apparatus that includes: an image carrier that carries a latent image; a toner carrier that has, on a surface of the toner carrier, a concave portion arrayed in a regular pattern so as to carry toner, and develops the latent image that is carried on the image carrier by means of the toner carried in the concave portion; and a voltage application section that applies a development voltage to the toner carrier for the purpose of the development of the latent image. In the configuration of an image formation apparatus according to the above-described aspect of the invention, immediately after that the toner carrier has developed the latent image, which is carried on the image carrier, by means of the toner carried in the concave portion in response to the application of the development bias to the toner carrier by the voltage application section, at least one layer of the toner remains carried in the concave portion.
    • 本发明作为其一个方面提供了一种图像形成装置,其包括:承载潜像的图像载体; 在调色剂载体的表面上具有排列成规则图案的凹部以便携带调色剂的调色剂载体,并且借助于承载在凹部中的调色剂显影承载在图像载体上的潜像 ; 以及为了显影潜像的目的而向显影剂载体施加显影电压的电压施加部分。 在根据本发明的上述方面的图像形成装置的配置中,紧接着,调色剂载体已经通过在凹部中承载的调色剂显影载体在图像载体上的潜像 响应于通过电压施加部分将显影偏压施加到调色剂载体,至少一层调色剂保留在凹部中。
    • 50. 发明申请
    • Image Forming Apparatus
    • 图像形成装置
    • US20070177908A1
    • 2007-08-02
    • US11623669
    • 2007-01-16
    • Tomohiro ARUGAYoichi YAMADANoboru SAKURAITakatomo FUKUMOTO
    • Tomohiro ARUGAYoichi YAMADANoboru SAKURAITakatomo FUKUMOTO
    • G03G15/08
    • G03G15/0818
    • An image forming apparatus includes: an image bearing body that is rotatable about a central axis thereof, and that bears a dot-like latent image, on a surface of the image bearing body, in each of a plurality of divided regions that are arranged in rows along a direction that intersects an axial direction of the central axis at a predetermined intersection angle; and a developer bearing roller that is rotatable in order to make visible, as a developer image, the dot-like latent images borne by the image bearing body, using a developer borne on a surface of the developer bearing roller, the developer bearing roller opposing the image bearing body such that an axial direction of the developer bearing roller is parallel to the axial direction of the image bearing body, and that includes a helical groove portion on the surface of the developer bearing roller, the helical groove portion being inclined at a predetermined inclination angle with respect to the axial direction of the developer bearing roller and being formed having a uniform pitch in the axial direction, wherein a value that is a tangent of the inclination angle divided by a ratio of a moving speed of the surface of the developer bearing roller to a moving speed of the surface of the image bearing body is different from a tangent of the intersection angle.
    • 图像形成装置包括:图像承载体,其能够围绕其中心轴线旋转并且在图像承载体的表面上具有点状潜像,所述图像承载体分布在多个分割区域中 沿着与中心轴的轴向相交的方向以预定的交叉角度排列; 以及显影剂承载辊,其可旋转以使作为显影剂图像可见的由图像承载体承载的点状潜像,使用承载在显影剂承载辊的表面上的显影剂,显影剂承载辊相对于 所述图像承载体使得所述显影剂承载辊的轴向平行于所述图像承载体的轴向方向,并且所述图像承载体在所述显影剂承载辊的表面上包括螺旋槽部分,所述螺旋槽部分倾斜于 相对于显影剂承载辊的轴向的预定倾斜角度并且在轴向方向上具有均匀的间距,其中,倾斜角的切线值除以所述倾斜角度的表面的移动速度的比率 显影轴承辊与图像承载体的表面的移动速度不同于交叉角的切线。