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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。

    Magnetic toner
    8.
    发明授权
    Magnetic toner 有权
    磁性调色剂

    公开(公告)号：US07678523B2

    公开(公告)日：2010-03-16

    申请号：US12330658

    申请日：2008-12-09

    申请人： Shuichi Hiroko ,  Tadashi Dojo ,  Michihisa Magome ,  Eriko Yanase ,  Takashi Matsui ,  Tomohisa Sano ,  Akira Sakakibara

    发明人： Shuichi Hiroko ,  Tadashi Dojo ,  Michihisa Magome ,  Eriko Yanase ,  Takashi Matsui ,  Tomohisa Sano ,  Akira Sakakibara

    IPC分类号： G03G9/00

    CPC分类号： G03G9/0835 ,  G03G9/0804 ,  G03G9/0821 ,  G03G9/0827 ,  G03G9/0833 ,  G03G9/0839 ,  G03G9/08711 ,  G03G9/08755 ,  G03G9/08793 ,  G03G9/08795 ,  G03G9/08797

    摘要： To provide a magnetic toner which has superior low-temperature fixing performance and pressure roller anti-staining properties even in various forms of use, has been kept from image defects such as image non-uniformity even during long-time image reproduction and can achieve high-level image quality. In a magnetic toner having toner particles containing at least a binder resin and a magnetic material, the activation energy Ea (kJ/mol) that is determined from a shift factor aT120 in a master curve of the toner, prepared when 120° C. is set as reference temperature, and the activation energy Eb (kJ/mol) that is determined from a shift factor aT150 in a master curve of the toner, prepared when 150° C. is set as reference temperature, satisfy Expression (1), and the Ea is 110 kJ/mol or less: 1.00≦Ea/Eb

    摘要翻译： 为了提供即使在各种形式的使用中也具有优异的低温定影性能和耐压辊抗污染性的磁性调色剂，即使在长时间的图像再现中也保持图像不均匀的图像缺陷，并且可以实现高 级图像质量。 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，在120℃下制备的调色剂的主曲线中的移动因子aT120确定的活化能Ea（kJ / mol）为 设定为参考温度，并且将由150℃下制备的调色剂的主曲线中的移动因子aT150确定的活化能Eb（kJ / mol）设定为基准温度，满足式（1），并且 Ea为110kJ / mol以下：1.00＆nlE; Ea / Eb <1.20（1）。

    Magnetic toner
    9.
    发明授权
    Magnetic toner 有权
    磁性调色剂

    公开(公告)号：US08518620B2

    公开(公告)日：2013-08-27

    申请号：US10577148

    申请日：2004-10-28

    申请人： Tadashi Dojo ,  Nene Dojo ,  Tomohisa Sano

    发明人： Tadashi Dojo ,  Nene Dojo ,  Tomohisa Sano

    IPC分类号： G03G9/083

    CPC分类号： G03G9/0837 ,  G03G9/0819 ,  G03G9/0821 ,  G03G9/0825 ,  G03G9/0827 ,  G03G9/0833 ,  G03G9/0834 ,  G03G9/0835 ,  G03G9/0836 ,  G03G9/0838 ,  G03G9/08755 ,  G03G9/08795 ,  G03G9/08797

    摘要： To provide a magnetic toner which: enables a stable image density to be obtained irrespective of a use environment; and exhibits excellent low-temperature fixability, little image deterioration upon fixation, high coloring power, and a reduced toner consumption. The present invention relates to a magnetic toner containing at least: a binder resin; and a magnetic body. The binder resin contains a polyester unit. The toner has a weight average particle size of 5.0 to 9.0 μm, a true specific gravity of 1.3 to 1.7 g/cm3, and a saturated magnetization of 20 to 35 Am2/kg in a magnetic field of 796 kA/m. The dielectric loss tangent (tan δ) of the toner satisfies (tan δH−tan δL)/tan δL≦0.20 at 100 kHz.

    摘要翻译： 提供一种能够获得稳定的图像浓度而不考虑使用环境的磁性调色剂; 并且具有优异的低温定影性，定影时的图像变差小，着色力高，并且降低了调色剂消耗。 本发明涉及至少含有粘合剂树脂的磁性调色剂; 和磁体。 粘合剂树脂含有聚酯单元。 调色剂在796kA / m的磁场中的重均粒径为5.0〜9.0μm，真比重为1.3〜1.7g / cm 3，饱和磁化强度为20〜35Am 2 / kg。 调色剂的介电损耗角正切（tanδ）在100kHz满足（tanδH-tanδL）/tanδL.20.20。

    Magnetic toner
    10.
    发明授权
    Magnetic toner 有权
    磁性调色剂

    公开(公告)号：US07935467B2

    公开(公告)日：2011-05-03

    申请号：US12272976

    申请日：2008-11-18

    申请人： Tadashi Dojo ,  Michihisa Magome ,  Eriko Yanase ,  Takashi Matsui ,  Tomohisa Sano ,  Akira Sakakibara ,  Shuichi Hiroko

    发明人： Tadashi Dojo ,  Michihisa Magome ,  Eriko Yanase ,  Takashi Matsui ,  Tomohisa Sano ,  Akira Sakakibara ,  Shuichi Hiroko

    IPC分类号： G03G15/01

    CPC分类号： G03G9/0836 ,  G03G9/0819 ,  G03G9/0821 ,  G03G9/0825 ,  G03G9/0827 ,  G03G9/0833 ,  G03G9/0834 ,  G03G9/0835 ,  G03G9/09716 ,  G03G9/09725

    摘要： In a magnetic toner which has magnetic toner base particles containing at least a binder resin and a magnetic material, and an inorganic fine powder, (i) the magnetic toner has an average circularity of from 0.950 or more to 1.000 or less, (ii) the magnetic toner has a compressibility of 30 or less, and (iii) the magnetic toner contains boron nitride particles having a median diameter (D50) of from 0.5 μm or more to 8.0 μm or less, as the inorganic fine powder in an amount of from 0.05 part by mass or more to 1.00 part by mass or less based on 100 parts by mass of the magnetic toner base particles. This provides a magnetic toner with which stable image density can be achieved without regard to service environment and which do not cause any image defects such as fog.

    摘要翻译： 在具有至少含有粘合剂树脂和磁性材料的磁性调色剂基础颗粒和无机细粉末的磁性调色剂中，（i）磁性调色剂的平均圆形度为0.950以上至1.000以下，（ii） 磁性调色剂的压缩率为30以下，（iii）磁性调色剂含有中值粒径（D50）为0.5μm以上且8.0μm以下的氮化硼粒子，作为无机细粉末， 相对于100质量份的磁性调色剂基础颗粒，为0.05质量份以上至1.00质量份以下。 这提供了一种磁性调色剂，其可以在不考虑使用环境的情况下实现稳定的图像浓度，并且不会引起诸如雾的图像缺陷。