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    Toner using small-particle size magnetic iron oxide
    3.
    发明授权
    Toner using small-particle size magnetic iron oxide 有权
    Toner mit kleinen magnetischen Eisenoxidpartikeln

    公开(公告)号：EP2824513B1

    公开(公告)日：2016-09-14

    申请号：EP14176485.2

    申请日：2014-07-10

    申请人： Canon Kabushiki Kaisha

    发明人： Tsuchida, Naohiko ,  Iida, Wakashi ,  Ogawa, Yoshihiro ,  Takahashi, Toru ,  Tsujimoto, Daisuke

    IPC分类号： G03G9/083

    CPC分类号： G03G9/0833 ,  G03G9/0831 ,  G03G9/0835 ,  G03G9/0836 ,  G03G9/0837 ,  G03G9/0838

    摘要： Provided is a magnetic toner which exhibits a high degree of blackness and high tinting strength, and in which scraping of a toner carrying member surface by the magnetic toner is not caused, and image defects such as fogging and tailing are suppressed. A magnetic toner comprising a magnetic toner particle that contains a binder resin and a magnetic iron oxide particle, wherein, the number-average particle diameter of the magnetic iron oxide particle ranges from 0.05 µm to 0.15 µm, and a relationship between the number-average particle diameter (µm) of the magnetic iron oxide particle and the specific surface area (m 2 /g) of the magnetic iron oxide particle satisfies Expression (1) below.

    摘要翻译： 本发明提供了一种表现出高度黑色度和高着色力的磁性调色剂，并且其中不会引起通过磁性调色剂刮除调色剂承载构件表面，并且抑制了图像缺陷如起雾和拖尾。 一种包含含有粘合剂树脂和磁性氧化铁颗粒的磁性调色剂颗粒的磁性调色剂，其中，磁性氧化铁颗粒的数均粒径为0.05μm至0.15μm，数均分子量之间的关系 磁性氧化铁颗粒的粒径（μm）和磁性氧化铁颗粒的比表面积（m 2 / g）满足下式（1）。

    MAGNETIC MONO-COMPONENT TONER COMPOSITION
    9.
    发明授权
    MAGNETIC MONO-COMPONENT TONER COMPOSITION 有权
    与磁性单组分调色剂成分

    公开(公告)号：EP1459137B1

    公开(公告)日：2012-07-11

    申请号：EP02792098.2

    申请日：2002-12-24

    申请人： LG Chem, Ltd.

    发明人： LEE, Won-Sup ,  LEE, Chang-Soon, 109-1603 Cheonggunarae apt. ,  LIM, In-Hee, 10-1009 Suyubyeoksan apt.

    IPC分类号： G03G9/08 ,  G03G9/083 ,  G03G9/097

    CPC分类号： G03G9/09716 ,  G03G9/0832 ,  G03G9/0833 ,  G03G9/09708

    摘要： The present invention relates to a magnetic mono-component toner composition, and more particularly to a mono-component toner composition that comprises magnetic toner particle comprising a binder resin, a magnetic component, and a charge control agent; a hydrophobic treated silica having a specific surface area of 20 to 80 m2/g; a hydrophobic treated silica having a specific surface area of 130 to 230 m2/g; and a metal oxide fine powder. A magnetic mono-component toner composition of the present invention has such good flowability that it provides smooth toner supply even when the developing roller surface has been worn due to long time use, and it has such excellent uniform chargeability that it prevents image deterioration ('wave' patterns of toner may form on developing roller, that is, magnetic sleeve) by forming an uniform toner layer on the developing roller.

    MAGNETIC TONER
    10.
    发明公开
    MAGNETIC TONER 审中-公开
    磁性调色剂

    公开(公告)号：EP2016466A4

    公开(公告)日：2011-08-24

    申请号：EP07742847

    申请日：2007-04-25

    申请人： CANON KK

    发明人： HIRATA JUNKO ,  OGAWA YOSHIHIRO ,  HASEGAWA YUSUKE ,  NISHIKAWA KOUJI ,  OKAZAKI MIHO ,  KASUYA TAKASHIGE

    IPC分类号： G03G9/083 ,  G03G9/087

    CPC分类号： G03G9/0833 ,  G03G9/0834 ,  G03G9/0835 ,  G03G9/0836 ,  G03G9/08755

    摘要： The object of the present invention is to provide a magnetic toner enabling an image with high image density and excellent image reproducibility to be obtained, which is excellent in fluidity, charging stability, and charging uniformity, even for long-term use, and also enabling an image whose fogging, ghost, and scattering are suppressed to be obtained. The magnetic toner has at least a binder resin and a magnetic material, where, the magnetic material is an magnetic iron oxide whose dielectric breakdown voltage of the magnetic material is 160 to 1600 V/cm, and the dielectric loss tangent (tan δ) of the magnetic toner at 100 kHz and 40° C. is 2.0×10−3 to 1.0×10−2.