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    Image forming apparatus that prevents conspicuous unevenness in image density
    2.
    发明授权
    Image forming apparatus that prevents conspicuous unevenness in image density 有权
    防止图像浓度显着不均匀的图像形成装置

    公开(公告)号：US07555252B2

    公开(公告)日：2009-06-30

    申请号：US11623669

    申请日：2007-01-16

    申请人： Tomohiro Aruga ,  Yoichi Yamada ,  Noboru Sakurai ,  Takatomo Fukumoto

    发明人： Tomohiro Aruga ,  Yoichi Yamada ,  Noboru Sakurai ,  Takatomo Fukumoto

    IPC分类号： G03G15/08

    CPC分类号： G03G15/0818

    摘要： 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.

    摘要翻译： 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。

    Developing agent carrier manufacturing method, developing agent carrier, developing device and image forming apparatus
    3.
    发明授权
    Developing agent carrier manufacturing method, developing agent carrier, developing device and image forming apparatus 有权
    显影剂载体制造方法，显影剂载体，显影装置和成像装置

    公开(公告)号：US08087170B2

    公开(公告)日：2012-01-03

    申请号：US11561213

    申请日：2006-11-17

    申请人： Noboru Sakurai ,  Yoichi Yamada ,  Junichi Nakahara ,  Masanao Kunugi ,  Tomohiro Aruga ,  Katsumi Okamoto

    发明人： Noboru Sakurai ,  Yoichi Yamada ,  Junichi Nakahara ,  Masanao Kunugi ,  Tomohiro Aruga ,  Katsumi Okamoto

    IPC分类号： A01B29/00

    CPC分类号： G03G15/0813 ,  G03G2215/0634 ,  Y10T29/49556 ,  Y10T29/4956 ,  Y10T29/49561

    摘要： A method for manufacturing a developing agent carrier of a hollow or solid cylindrical shape having an outer peripheral surface and an irregularity section formed on the outer peripheral surface to carry a developing agent is provided. The method comprises a step of preparing a base material of a hollow or solid cylindrical shape which is to become the developing agent carrier, the base material having an outer peripheral surface; and a step of forming the irregularity section by pressing dice for formation of the irregularity section against the outer peripheral surface of the base material. The irregularity section forming step comprises a first step of forming a plurality of first depression portions on the outer peripheral surface of the base material by use of a die and a second step of forming a plurality of second depression portions on the outer peripheral surface of the base material by use of a die identical with or different from the die used in forming the first depression portions, in such a manner that the second depression portions are dislocated from the first depression portions.

    摘要翻译： 提供一种制造中空或实心圆柱形状的显影剂载体的方法，其具有形成在外周表面上以承载显影剂的外周表面和不规则部分。 该方法包括制备中空或实心圆柱形状的基材作为显影剂载体的步骤，该基材具有外周表面; 以及通过将用于形成不规则部分的骰子压靠在基材的外周面上而形成不规则部分的步骤。 不规则部分形成步骤包括：通过使用模具在母材的外周面上形成多个第一凹部的第一工序;在第二工序中，在第二工序中， 使用与形成第一凹部的模具相同或不同的模具，使第二凹部从第一凹部脱位。

    Phase synchronization circuit
    6.
    发明授权
    Phase synchronization circuit 失效
    相位同步电路

    公开(公告)号：US5148334A

    公开(公告)日：1992-09-15

    申请号：US444764

    申请日：1989-12-01

    申请人： Takikazu Takeuchi ,  Hiroyuki Yokohara ,  Takuji Ogawa ,  Noboru Sakurai

    发明人： Takikazu Takeuchi ,  Hiroyuki Yokohara ,  Takuji Ogawa ,  Noboru Sakurai

    IPC分类号： G11B20/10 ,  G11B20/14 ,  H03L7/08

    CPC分类号： G11B20/10222 ,  G11B20/10009 ,  G11B20/1403

    摘要： Every other input pulse is extracted from an input signal containing alternate phase-advanced and phase-delayed pulses read out of a magnetic disk unit, a magnetic tape unit or the like. Output pulses in synchronism with the pulses thus extracted are produced. This extraction may be effected only during a predetermined length of time after staring application of the input pulses at the time of pull-in of a phase sync circuit. Whether phase synchronization is to be effected in accordance with advanced-phase or delayed-phase input pulses is determined from time to time as required.

    摘要翻译： 从包含从磁盘单元，磁带单元等读出的交替相位提前和相位延迟脉冲的输入信号中提取每个其它输入脉冲。 产生与这样提取的脉冲同步的输出脉冲。 该提取可以仅在相位同步电路的拉入时在施加输入脉冲之后的预定长度的时间内进行。 根据需要不时地确定是否根据高级相位或延迟相位输入脉冲实现相位同步。

    Developing roller, manufacturing method thereof, developing apparatus and image forming apparatus
    8.
    发明授权
    Developing roller, manufacturing method thereof, developing apparatus and image forming apparatus 有权
    显影辊及其制造方法，显影装置和图像形成装置

    公开(公告)号：US08192339B2

    公开(公告)日：2012-06-05

    申请号：US11935946

    申请日：2007-11-06

    申请人： Junichi Suzuki ,  Noboru Sakurai

    发明人： Junichi Suzuki ,  Noboru Sakurai

    IPC分类号： A01B29/00

    CPC分类号： G03G15/0818 ,  G03G2215/0177

    摘要： A developing roller on a circumferential surface of which toner is held is provided. In the developing roller, intersecting first and second grooves are formed. Protrusion portions are disposed in areas surrounded by the first and second grooves. The protrusion portions have minute projections.

    摘要翻译： 提供保持调色剂的圆周表面上的显影辊。 在显影辊中形成相交的第一和第二槽。 凸起部分设置在由第一和第二凹槽包围的区域中。 突出部分具有微小的突起。