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    Magnetic toner, apparatus unit and image forming method
    3.
    发明授权
    Magnetic toner, apparatus unit and image forming method 失效
    磁性调色剂，设备单元和成像方法

    公开(公告)号：US5858593A

    公开(公告)日：1999-01-12

    申请号：US902323

    申请日：1997-07-29

    申请人： Osamu Tamura ,  Koichi Tomiyama ,  Nobuyuki Okubo ,  Shunji Suzuki ,  Yoshihiro Ogawa ,  Keita Nozawa

    发明人： Osamu Tamura ,  Koichi Tomiyama ,  Nobuyuki Okubo ,  Shunji Suzuki ,  Yoshihiro Ogawa ,  Keita Nozawa

    IPC分类号： G03G9/08 ,  G03G9/083 ,  G03G13/09 ,  G03G15/08 ,  G03G15/09

    CPC分类号： G03G9/0835 ,  G03G13/09 ,  G03G9/0819 ,  G03G9/0821 ,  G03G9/0833

    摘要： Disclosed are a magnetic toner for developing an electrostatic latent image comprising magnetic toner particles containing a binder resin of 100 parts by weight and a magnetic substance of 20 to 150 parts by weight, and an apparatus unit and an image forming method for employing the magnetic toner. A frictional electrification property is such that the absolute value of the frictional electrification amount relative to an iron powder of 250 mesh-pass to 350 mesh-on is 25 to 40 mc/kg. Assuming that for particle distribution of the magnetic toner a weight-average particle diameter (D.sub.4) for the magnetic toner is X (.mu.m) and that a count % in a count distribution of magnetic toner particles that have a diameter of 3.17 .mu.m or smaller is Y (%), expressions (1) and (2) are satisfied:-5X+35.ltoreq.Y.ltoreq.-25X+180 (1)3.5.ltoreq.X.ltoreq.6.5 (2).Sphericity (.psi.) of particles is equal to or greater than 0.80 and a product (.sigma..sub.r .times.H.sub.c) of remanence �.sigma..sub.r (Am.sup.2 /kg)! and coercive force (H.sub.c (kA/m)! of the magnetic substance in a magnetic field of 795.8 kA/m (10 k oersted) is 10 to 56 (kA.sup.2 m/kg).

    摘要翻译： 公开了一种用于显影静电潜像的磁性调色剂，其包含含有100重量份的粘合剂树脂的磁性调色剂颗粒和20至150重量份的磁性物质，以及用于使用磁性调色剂的装置单元和图像形成方法 。 摩擦带电特性使得相对于250目通过至350目的铁粉的摩擦带电量的绝对值为25〜40mc / kg。 假设对于磁性调色剂的颗粒分布，磁性调色剂的重均粒径（D4）为X（μm），并且磁性调色剂颗粒的计数分布的计数％为直径为3.17μm，或 较小的是Y（％），表达式（1）和（2）满足：-5X + 35

    Toner and image forming method
    5.
    发明授权
    Toner and image forming method 有权
    调色剂和成像方法

    公开(公告)号：US5976752A

    公开(公告)日：1999-11-02

    申请号：US135167

    申请日：1998-08-18

    申请人： Satoshi Matsunaga ,  Koichi Tomiyama ,  Yuichi Mizoh ,  Keita Nozawa ,  Minekazu Endo ,  Tadashi Doujo ,  Yoshihiro Ogawa ,  Nene Shibayama

    发明人： Satoshi Matsunaga ,  Koichi Tomiyama ,  Yuichi Mizoh ,  Keita Nozawa ,  Minekazu Endo ,  Tadashi Doujo ,  Yoshihiro Ogawa ,  Nene Shibayama

    IPC分类号： G03G9/087 ,  G03G9/097 ,  G03G13/22

    CPC分类号： G03G9/08755 ,  G03G9/087 ,  G03G9/08702 ,  G03G9/08711 ,  G03G9/08728 ,  G03G9/08797

    摘要： An electrophotographic toner is composed of at least a binder resin, a colorant, and a wax. The binder resin (a) comprises a polyester resin, a vinyl resin and a hybrid resin component comprising a polyester unit and a vinyl polymer unit, (b) has a THF (tetrahydrofuran)-soluble content (W1) of 50-85 wt. % and a THF-insoluble content (W2) of 5-50 wt. %, an ethyl acetate-soluble content (W3) of 40-98 wt. % and an ethyl acetate-insoluble content (W4) of 2-60 wt. %, a chloroform-soluble content (W5) of 55-90 wt. % and a chloroform-insoluble content (W6) of 10-45 wt. %, respectively after 10 hours of Soxhlet extraction with respective solvents, giving a ratio W4/S6 of 1.1-4.0, and contains a THF-soluble content providing a GPC (gel permeation chromatography) chromatogram exhibiting a main peak in a molecular weight range of 4000-9000, including 35.0-65.0% (A1) of a component haing molecular weights in a range of 500 to below 1.times.10.sup.4, 25.0-45.0% (A2) of a component having molecular weights in a range of 1.times.10.sup.4 to below 1.times.10.sup.5 and 10.0-30.0% (A3) of a component having molecular weights of at least 1.times.10.sup.5 giving a ratio A1/A2 of 1.05-2.00. The binder resin shows good dispersibility of wax and colorant.

    摘要翻译： 电子照相调色剂由至少粘合剂树脂，着色剂和蜡组成。 粘合剂树脂（a）包括聚酯树脂，乙烯基树脂和包含聚酯单元和乙烯基聚合物单元的混合树脂组分，（b）具有50-85重量％的THF（四氢呋喃） - 可溶成分（W1） ％和THF不溶物含量（W2）为5-50wt。 ％，40-98重量％的乙酸乙酯可溶物含量（W3） ％，乙酸乙酯不溶物含量（W4）为2-60wt。 ％，55-90重量％的氯仿可溶物含量（W5） ％，氯仿不溶物含量（W6）为10-45wt。 ％，分别用各自的溶剂提取索氏提取10小时后，得到比例W4 / S6为1.1-4.0，并含有THF可溶性成分，提供在分子量范围内显示主峰的GPC（凝胶渗透色谱）色谱图 4000-9000，包括分子量在500至低于1×10 4范围内的分子量为35.0-65.0％（A1），分子量为1×104至低于1×10 5的组分的25.0-45.0％（A2）和10.0 -30.0％（A3）的分子量为至少1×10 5的组分，其A1 / A2比为1.05-2.00。 粘合剂树脂表现出良好的蜡和着色剂的分散性。

    Magnetic toner for developing electrostatic images, process for producing it, image forming method and process cartridge
    9.
    发明授权
    Magnetic toner for developing electrostatic images, process for producing it, image forming method and process cartridge 失效
    用于显影静电图像的磁性调色剂，其制造方法，成像方法和处理盒

    公开(公告)号：US06238834B1

    公开(公告)日：2001-05-29

    申请号：US09084993

    申请日：1998-05-28

    申请人： Osamu Tamura ,  Koichi Tomiyama ,  Shunji Suzuki ,  Yoshihiro Ogawa

    发明人： Osamu Tamura ,  Koichi Tomiyama ,  Shunji Suzuki ,  Yoshihiro Ogawa

    IPC分类号： G03G9083

    CPC分类号： G03G9/0819 ,  G03G9/081 ,  G03G9/0821 ,  G03G9/0835 ,  G03G9/09725

    摘要： A magnetic toner for developing an electrostatic image is comprised of magnetic toner particles containing at least a binder resin, a magnetic fine powder and a wax. The magnetic toner particles have a weight-average particle diameter of from 3.5 to 6.5 &mgr;m, and a dispersion prepared by dispersing 15 mg of the magnetic toner particles in 19 ml of an aqueous solution of ethyl alcohol and water in a volume ratio of 27:73 has an absorbance of from 0.2 to 0.7 at a wavelength of 600 nm. A process for producig such a magnetic toner is charcterized by, especially, the melt-kneading step carried out under the following conditions: 2.2×103≦E/&egr;≦2.0×104 E=k&ohgr;2T, &egr;=F/(&pgr;D2L) wherein &ohgr; represents a screw rotational speed (m/min), T represents a preset temperature (K), F represents a feed rate (kg/min) of a mixture of a binder resin, a magnetic fine powder and a wax, D represents a cylinder inner diameter (m), L represents a screw effective length (m), &pgr; represents the circular constant, and k represents (D0/D)2, where D0 is 0.1 m.

    摘要翻译： 用于显影静电图像的磁性调色剂由至少含有粘合剂树脂，磁性细粉和蜡的磁性调色剂颗粒组成。 磁性调色剂颗粒的重均粒径为3.5至6.5μm，并且通过将15mg磁性调色剂颗粒分散在19ml乙醇和水的水溶液中而制得的分散体积比为27： 73在波长600nm处的吸光度为0.2〜0.7。制造这种磁性调色剂的方法特别是在以下条件下进行的熔融捏合步骤：其中ω表示螺杆转速（ m / min），T表示预设温度（K），F表示粘合剂树脂，磁性细粉末和蜡的混合物的进料速度（kg / min），D表示气缸内径（m） L表示螺杆有效长度（m），pi表示圆形常数，k表示（D0 / D）2，其中D0为0.1μm。

    Toner for developing electrostatic images image forming method and process cartridge
    10.
    发明授权
    Toner for developing electrostatic images image forming method and process cartridge 失效
    用于显影静电图像的调色剂，成像方法和处理盒

    公开(公告)号：US6060202A

    公开(公告)日：2000-05-09

    申请号：US046435

    申请日：1998-03-24

    申请人： Yoshihiro Ogawa ,  Koichi Tomiyama ,  Keita Nozawa ,  Shunji Suzuki

    发明人： Yoshihiro Ogawa ,  Koichi Tomiyama ,  Keita Nozawa ,  Shunji Suzuki

    IPC分类号： G03G9/08 ,  G03G9/097 ,  G03G13/08

    CPC分类号： G03G9/0819 ,  G03G9/097

    摘要： An electrophotographic toner including a blend of toner particles, and external additive particles, is provided with characteristic particle size distribution conditions, i.e., (i) a particle size distribution based on a Coulter counter measurement, including a weight-average particle size D4 of X .mu.m and Y % by number of particles having sizes of 2.00-3.17 .mu.m satisfying:-5X+35.ltoreq.Y.ltoreq.-25X+180 (1)3.5.ltoreq.X.ltoreq.6.5 (2), and(ii) a particle size distribution based on a flow particle image analyzer measurement, including A % by number of particles having circle-equivalent diameters of at least 1.00 .mu.m and below 1.03 .mu.m and B % by number of particles having circle-equivalent diameters of at least 2.00 .mu.m and below 2.06 .mu.m satisfying:B-A.ltoreq.0.30 (3).As a result, the toner is provided with a stable developing performance even in a long period of continuous image formation in a high temperature/high humidity environment.

    摘要翻译： 包括调色剂颗粒和外部添加剂颗粒的混合物的电子照相调色剂具有特征粒度分布条件，即（i）基于库尔特计数器测量的粒度分布，包括X的重均粒径D4 μm和Y％，其粒径为2.00-3.17μm，满足：-5X + 35