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    Magnetic black toner
    4.
    发明授权
    Magnetic black toner 有权
    磁性黑色调色剂

    公开(公告)号：US06803164B2

    公开(公告)日：2004-10-12

    申请号：US10238782

    申请日：2002-09-11

    申请人： Yuichi Mizoo ,  Tadashi Dojo ,  Nene Shibayama ,  Yusuke Hasegawa

    发明人： Yuichi Mizoo ,  Tadashi Dojo ,  Nene Shibayama ,  Yusuke Hasegawa

    IPC分类号： G03G9083

    CPC分类号： G03G9/0834 ,  G03G9/0819 ,  G03G9/0827 ,  G03G9/0833 ,  G03G9/0835 ,  G03G9/0838

    摘要： A magnetic black toner comprising magnetic black toner particles containing at least a binder resin and a magnetic material. The toner has a weight-average particle diameter of from 5 &mgr;m to 12 &mgr;m, and the toner has, in its particles of 3 &mgr;m or more in diameter, at least 90% by number of particles with a circularity of 0.900 or more and has an average circularity of from 0.940 to 0.970. The magnetic material comprises iron oxide particles which have an average particle diameter of from 0.10 &mgr;m to 0.30 &mgr;m, contain titanium or a titanium compound in an amount of from 0.3% by weight to 1.5% by weight in terms of titanium, based on the total weight of the iron oxide particles, and have the ratio of the proportion of FeO to the total Fe content in 10% by weight from the particle surface, A %, to the proportion of FeO to the total Fe content in the remainder 90% by weight, B %, which satisfies the expression: 0.7≦A/B≦1.0. Also, an inorganic fine powder is externally added to the toner particle surfaces.

    摘要翻译： 一种包含至少含有粘合剂树脂和磁性材料的磁性黑色调色剂颗粒的磁性黑色调色剂。 调色剂的重均粒径为5〜12μm，调色剂的直径为3μm以上的颗粒的至少90个数量的圆形度为0.900以上的颗粒，并且具有 平均圆形0.940至0.970。 磁性材料包含平均粒径为0.10μm至0.30μm的氧化铁颗粒，以钛为基准，钛或钛化合物的含量为0.3重量％至1.5重量％，基于总计 氧化铁颗粒的重量，并且FeO与总Fe含量的比例为10重量％，从颗粒表面的A％与FeO的总Fe含量之比为90％，余量为90％ 重量，B％，满足表达式：0.7 <= A / B <= 1.0。 此外，无机细粉末外部添加到调色剂颗粒表面。

    Magnetic toner
    5.
    发明授权
    Magnetic toner 有权
    磁性调色剂

    公开(公告)号：US07160660B2

    公开(公告)日：2007-01-09

    申请号：US10817891

    申请日：2004-04-06

    申请人： Tadashi Dojo ,  Nene Shibayama ,  Yuichi Mizoo ,  Yusuke Hasegawa

    发明人： Tadashi Dojo ,  Nene Shibayama ,  Yuichi Mizoo ,  Yusuke Hasegawa

    IPC分类号： G03G9/083

    CPC分类号： G03G9/0834 ,  C08G63/20 ,  C08G63/85 ,  G03G9/0833 ,  G03G9/0836 ,  G03G9/0838 ,  G03G9/08755 ,  G03G9/08782 ,  G03G9/08793 ,  G03G9/08795 ,  G03G9/09783 ,  G03G9/09791

    摘要： In a magnetic toner having toner particles containing at least a binder resin and a magnetic material, the binder resin is chiefly composed of a resin having a polyester unit synthesized using as a catalyst a tin compound represented by the following Formula (1), and the magnetic material has a number-average particle diameter of form 0.1 μm to 0.3 μm: (RCOO)2Sn  Formula (1) wherein R represents an alkyl group having 5 to 15 carbon atoms. This magnetic toner can attain a stable image density without dependence on environment and enables formation of high-grade images over a long period of time without causing scratches of latent image bearing members.

    摘要翻译： 在具有至少含有粘合剂树脂和磁性材料的调色剂颗粒的磁性调色剂中，粘合剂树脂主要由具有使用由下式（1）表示的锡化合物作为催化剂合成的聚酯单元的树脂组成， 磁性材料的数均粒径为0.1μm至0.3μm：<？in-line-formula description =“In-line Formulas”end =“lead”？>（RCOO）2 Sn式（1）<？in-line-formula description =“In-line formula”end =“tail”？>其中R表示碳原子数5〜15的烷基。 这种磁性调色剂可以在不依赖于环境的情况下获得稳定的图像浓度，并且能够长时间形成高级图像，而不会引起潜像承载部件的划痕。

    Image forming apparatus
    6.
    发明授权
    Image forming apparatus 有权
    图像形成装置

    公开(公告)号：US07123862B2

    公开(公告)日：2006-10-17

    申请号：US10832445

    申请日：2004-04-27

    申请人： Yusuke Hasegawa ,  Yuichi Mizoo ,  Tadashi Dojo ,  Nene Shibayama ,  Tomohisa Sano

    发明人： Yusuke Hasegawa ,  Yuichi Mizoo ,  Tadashi Dojo ,  Nene Shibayama ,  Tomohisa Sano

    IPC分类号： G03G15/01 ,  G03G9/00

    CPC分类号： G03G9/0833 ,  G03G9/0819 ,  G03G9/0821 ,  G03G9/0827 ,  G03G9/0836 ,  G03G9/0838 ,  G03G9/08782

    摘要： In an image forming apparatus having at least an amorphous silicon photosensitive member, a magnetic toner developing means and a color developer developing means, the magnetic toner has a weight-average particle diameter (D4) of from 4.0 μm to 10.0 μm and a ratio thereof to number-average particle diameter (D1), D4/D1, of from 1.0 to 2.0, and the number of magnetic particles not passing through a mesh with an opening of 34 μm which are contained in the unit volume of the magnetic toner is from 3.5 to 105. This image forming apparatus can not easily cause faulty cleaning performance even in using the magnetic toner and the non-magnetic color toners in combination and has superior environmental stability and running stability even where toners made to have small particle diameter are used or process speed is high.

    摘要翻译： 在至少具有非晶硅感光构件，磁性调色剂显影装置和彩色显影剂显影装置的图像形成装置中，磁性调色剂的重均粒径（D 4）为4.0μm至10.0μm， 的数均粒径（D 1），D 4 / D 1为1.0〜2.0，未通过具有34μm的开孔的网状物的磁性粒子的数量为 磁性调色剂为3.5至105.该成像装置即使在组合使用磁性调色剂和非磁性色调剂也不容易引起清洁性能不良，并且即使在具有小颗粒的调色剂的情况下也具有优异的环境稳定性和运行稳定性 使用直径或加工速度高。

    Toner for developing electrostatic images
    8.
    发明授权
    Toner for developing electrostatic images 失效
    用于显影静电图像的调色剂

    公开(公告)号：US5773183A

    公开(公告)日：1998-06-30

    申请号：US749640

    申请日：1996-11-15

    申请人： Tadashi Doujo ,  Yuichi Mizoo ,  Takaaki Kotaki ,  Yushi Mikuriya

    发明人： Tadashi Doujo ,  Yuichi Mizoo ,  Takaaki Kotaki ,  Yushi Mikuriya

    IPC分类号： G03G9/083 ,  G03G9/087 ,  G03G9/09

    CPC分类号： G03G9/091 ,  G03G9/08755 ,  G03G9/08795 ,  G03G9/0833 ,  G03G9/08782

    摘要： A toner for developing an electrostatic image has a binder resin, a colorant and a charge control agent. The binder resin has a polyester resin having an acid value of from 15 to 40 and a hydroxyl value of 45 or less. The toner has, in its molecular weight distribution as measured by gel permeation chromatography, tetrahydrofuran-soluble matter having a weight average molecular weight Mw of 100,000 or more, having a ratio of weight average molecular weight Mw to number average molecular weight Mn, Mw/Mn, of not less than 35, containing from 70% to 94% of a low-molecular weight region component having a molecular weight of less than 150,000, containing from 1% to 10% of a medium-molecular weight region component having a molecular weight of from 150,000 to 500,000, and containing from 5% to 25% of a high-molecular weight region component having a molecular weight of more than 500,000. The high-molecular weight region component is more than the medium-molecular weight region component.

    摘要翻译： 用于显影静电图像的调色剂具有粘合剂树脂，着色剂和电荷控制剂。 粘合剂树脂具有酸值为15〜40，羟值为45以下的聚酯树脂。 调色剂在通过凝胶渗透色谱法测定的分子量分布中，具有重均分子量Mw为100,000以上的四氢呋喃可溶性物质，重均分子量Mw与数均分子量Mn的比，Mw / Mn不低于35，含有70％至94％的分子量小于150,000的低分子量成分，含有1％至10％的具有分子量 重量为15万至500,000，并含有5％至25％的分子量大于500,000的高分子量成分。 高分子量区域成分大于中等分子量区域成分。