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    Method and device for developing electrostatic latent images
    1.
    发明授权
    Method and device for developing electrostatic latent images 有权
    用于显影静电潜像的方法和装置

    公开(公告)号：US06489073B2

    公开(公告)日：2002-12-03

    申请号：US09758196

    申请日：2001-01-12

    申请人： Akihiro Kotsugai ,  Kimitoshi Yamaguchi ,  Hiroshi Ikuno

    发明人： Akihiro Kotsugai ,  Kimitoshi Yamaguchi ,  Hiroshi Ikuno

    IPC分类号： G03G1306

    CPC分类号： G03G13/09

    摘要： Electrostatic latent images are developed with a toner in such a configuration that an electrostatic-latent-image-bearing member is disposed to face a developer-bearing member which bears thereon a developer consisting of a magnetic carrier and a toner by relatively moving the developer-bearing member and the electrostatic-latent-image-bearing member at different velocities, with the development being carried out under conditions represented by formula (1): 0.1 ⁢   ⁢ mm ≤ k = L · [ ( Vr / Vp ) - 1 ] ≤ 2 ⁢   ⁢ mm ( 1 ) wherein Vp is a transporting velocity (mm/sec) of the surface of the electrostatic-latent-image-bearing member, Vr is a transporting velocity (mm/sec) of the surface of the developer-bearing member, and L is a width (mm) of a contact portion between the developer and the electrostatic-latent-image-bearing member.

    摘要翻译： 静电潜像用调色剂显影，使得静电潜像承载部件设置成面对带负载部件的显影剂承载部件，所述显影剂承载部件承载由磁性载体和调色剂组成的显影剂， 承载构件和静电潜像承载构件的不同速度，显影在由式（1）表示的条件下进行：其中Vp是静电潜像表面的传输速度（mm / sec） 图像承载部件，Vr是显影剂承载部件的表面的传送速度（mm / sec），L是显影剂和静电潜像承载部件的接触部分的宽度（mm） 会员。

    Carrier for electrophotographic developer
    2.
    发明授权
    Carrier for electrophotographic developer 有权
    电子照相显影剂载体

    公开(公告)号：US06743558B2

    公开(公告)日：2004-06-01

    申请号：US10135377

    申请日：2002-05-01

    申请人： Kimitoshi Yamaguchi ,  Masahide Yamashita ,  Akihiro Kotsugai ,  Hiroaki Takahashi

    发明人： Kimitoshi Yamaguchi ,  Masahide Yamashita ,  Akihiro Kotsugai ,  Hiroaki Takahashi

    IPC分类号： G03G900

    CPC分类号： G03G9/107 ,  G03G9/0836 ,  G03G9/0838

    摘要： A carrier for electrophotographic developer essentially consisting of a core material of magnetic particles and thereon provided a resinous coating layer, wherein a weight-average particle-diameter(Dw) of the carrier ranges from 25 to 45 &mgr;m, the content of particles having diameter less than 44 &mgr;m is more than or equal to 75% by weight, the content of particles having diameter more than or equal to 62 &mgr;m is less than one percent by weight, the content of particles having diameter less than 22 &mgr;m is less than or equal to 7.0% by weight, the magnetic moment of the carrier at 1 kilo Oe of magnetic field is more than or equal to 76 emu/g. The carrier shows high optical density of image with no smearing of background area, good reproducibility in developing of small dots in image with no carrier deposition.

    摘要翻译： 一种电子照相显影剂载体，其基本上由磁性颗粒的芯材料组成，其上提供了树脂涂层，其中载体的重均粒径（Dw）为25-45μm，颗粒的含量为 44重量％以上为75重量％以上，直径大于等于62μm的颗粒的含量小于1重量％，直径小于22μm的颗粒的含量小于或等于 至7.0重量％，载流子在1千欧磁场的磁矩大于或等于76emu / g。 载体显示高的图像光密度，没有背景区域的污迹，在没有载体沉积的图像中小点的显影中具有良好的再现性。

    Method of developing a latent electrostatic image
    3.
    发明授权
    Method of developing a latent electrostatic image 有权
    显影静电潜像的方法

    公开(公告)号：US06696213B2

    公开(公告)日：2004-02-24

    申请号：US10091498

    申请日：2002-03-07

    申请人： Kimitoshi Yamaguchi ,  Akihiro Kotsugai

    发明人： Kimitoshi Yamaguchi ,  Akihiro Kotsugai

    IPC分类号： G03G1509

    CPC分类号： G03G13/09 ,  G03G9/10

    摘要： A method of developing a latent electrostatic image using a two-component developer system, having a ratio (Vr/Vp) ranges 1.2

    摘要翻译： 使用双组分显影剂体系显影静电潜像的方法，其中（Vp / Vp）的比例（Vr / Vp）为1.2 <（Vr / Vp）<3，其中（Vp）为线速度（Vp）[m / sec ]，并且（Vr）是显影套筒的线速度（Vr）[m / sec]，并施加偏压直流电压（VB）[伏特]，其中： 作为感光构件和显影套筒之间最近点处的距离的显影间隙（Gp）[cm]小于或等于0.6mm，比率（rhop / rhoa）满足表达式（rhop / rhoa）<0.7 其中rhop是感光构件和显影套筒之间最近点处的显影剂的密度[g / cm 3]，其由等式rhop = J / Gp表示，其中J是开发者的量 （说明书中，rhop也表示为“显影剂的密度”或“GP剂的密度”），rhoa为显影剂的体积密度[g / cm 3]，电子照相用载体为 使用的重均粒径（Dv）为25μm〜45μm的载体芯颗粒，小于44μm的颗粒为70重量％以上的载体，粒径小于 22重量％小于或等于7重量％，重量平均粒径（Dv） 并且数均粒径（Dp）满足表达式1 <=（Dv / Dp）<= 1.30，核心颗粒通过涂布形式与树脂材料一起使用。 提供了用于消除从显影方向（显影套筒的行进速度快于静电潜像的行进速度）导出的显影图像中的不期望的伪影的方法。

    Carrier for developer for electrophotography
    4.
    发明授权
    Carrier for developer for electrophotography 有权
    电子照相显影剂载体

    公开(公告)号：US06472118B1

    公开(公告)日：2002-10-29

    申请号：US09713201

    申请日：2000-11-16

    申请人： Kimitoshi Yamaguchi ,  Akihiro Kotsugai

    发明人： Kimitoshi Yamaguchi ,  Akihiro Kotsugai

    IPC分类号： G03G900

    CPC分类号： G03G9/107 ,  G03G9/1075 ,  G03G9/1136

    摘要： A carrier for an image developer for electrophotography, including core particles, and a coating layer covering each of the core particles, wherein the core particles have a weight average particle diameter of Dv which is 25-45 &mgr;m and a number average particle diameter of Dp which meets with the following condition: 1≦Dv/Dp≦1.3, wherein the core particles have such a particle size distribution that particles having a particle diameter of less than 44 &mgr;m is at least 70% by weight and particles having a particle diameter of less than 22 &mgr;m is not more than 7% by weight.

    摘要翻译： 一种用于电子照相的图像显影剂的载体，包括核心颗粒和覆盖每个核心颗粒的涂层，其中芯颗粒的重均粒径为Dv为25-45μm，数均粒径为Dp 其符合以下条件：其中核心颗粒具有如此的粒径分布，粒径小于44μm的颗粒为至少70重量％，粒径小于22μm的颗粒不大于 7重量％。

    Carrier for developer for electrophotography
    5.
    发明授权
    Carrier for developer for electrophotography 有权

    公开(公告)号：US06599672B2

    公开(公告)日：2003-07-29

    申请号：US10225165

    申请日：2002-08-22

    申请人： Kimitoshi Yamaguchi ,  Akihiro Kotsugai

    发明人： Kimitoshi Yamaguchi ,  Akihiro Kotsugai

    IPC分类号： G03G500

    CPC分类号： G03G9/107 ,  G03G9/1075 ,  G03G9/1136

    摘要： A carrier for an image developer for electrophotography, including core particles, and a coating layer covering each of the core particles, wherein the core particles have a weight average particle diameter of Dv which is 25-45 &mgr;m and a number average particle diameter of Dp which meets with the following condition: 1≦Dv/Dp≦1.3, wherein the core particles have such a particle size distribution that particles having a particle diameter of less than 44 &mgr;m is at least 70% by weight and particles having a particle diameter of less than 22 &mgr;m is not more than 7% by weight.

    Process for developing, image-forming apparatus, and image-forming process cartridge
    7.
    发明授权
    Process for developing, image-forming apparatus, and image-forming process cartridge 有权
    用于显影，成像装置和成像处理盒的方法

    公开(公告)号：US06735409B2

    公开(公告)日：2004-05-11

    申请号：US10339290

    申请日：2003-01-10

    申请人： Hiroaki Takahashi ,  Kimitoshi Yamaguchi ,  Naoki Imahashi ,  Akihiro Kotsugai

    发明人： Hiroaki Takahashi ,  Kimitoshi Yamaguchi ,  Naoki Imahashi ,  Akihiro Kotsugai

    IPC分类号： G03G1509

    CPC分类号： G03G15/09

    摘要： A process for developing which includes the step of developing a latent electrostatic image on a latent electrostatic image support by a developing agent supplied on a development sleeve, where the developing agent is supplied with a density of 1.3 g/cm3 to 2.0 g/cm3 at the closest part between the support and the sleeve, the support is contacted with magnetic brushes formed of the developing agent on the sleeve, so that the magnetic brushes have a width of 2 mm or less at a linearly contacting surface, in a direction where the surface rotates and the developing agent contains toners, and carriers having magnetic core particles and resin layers to cover its surface, the carriers have a weight average particle diameter of 25 &mgr;m to 45 &mgr;m, contain 60 wt % or more of the particles having a diameter of less than 44 &mgr;m, and 7 wt % or less of particles having a diameter of less than 22 &mgr;m.

    摘要翻译： 一种显影方法，其包括通过提供在显影套筒上的显影剂在静电潜像载体上显影静电潜像的步骤，其中显影剂的密度为1.3g / cm 3至2.0g / cm 3在支撑件和套筒之间的最接近的部分处，支撑件与套筒上由显影剂形成的磁刷接触，使得磁刷在线性接触表面处具有2mm或更小的宽度 在表面旋转的方向和显影剂中含有调色剂，以及具有磁芯颗粒和树脂层覆盖其表面的载体，载体的重均粒径为25μm〜45μm，含有60wt％以上 的直径小于44μm的颗粒和7wt％或更少的直径小于22μm的颗粒。