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    • 3. 发明授权
    • Black toner
    • 黑色墨粉
    • US07943281B2
    • 2011-05-17
    • US11576420
    • 2006-04-14
    • Takaaki KayaYasukazu AyakiShigeto TamuraYayoi TazawaRyoichi FujitaYuichi Yajima
    • Takaaki KayaYasukazu AyakiShigeto TamuraYayoi TazawaRyoichi FujitaYuichi Yajima
    • G03G9/09
    • G03G9/0902
    • In a black toner having at least a binder resin and an iron-titanium composite oxide as a colorant; the iron-titanium composite oxide is contained in a specific amount; the black toner has a specific weight average particle diameter and a specific saturation magnetization; the black toner has, in X-ray diffraction thereof, a maximum peak at 2θ=from 32.5 to 33.1 degrees, having a half width of 0.25 degree or less. The black toner has, in a proportion of less than 30% by number, an iron-titanium composite oxide having, in a sectional photograph of the toner, a maximum frequency of linearity within the range where the linearity is smaller than 2.4 and having a linearity of 3.0 or more, in regard to the number frequency distribution of the linearity of the iron-titanium composite oxide.
    • 在具有至少粘合剂树脂和铁 - 钛复合氧化物作为着色剂的黑色调色剂中; 铁钛复合氧化物的含量为特定量; 黑色调色剂具有比重的平均粒径和比饱和磁化强度; 在X射线衍射中,黑色调色剂在2θ处的最大峰值= 32.5〜33.1度,半宽度为0.25度以下。 黑色调色剂的数量小于30%的铁钛复合氧化物在调色剂的截面照片中具有在线性小于2.4的范围内的最大线性频率,并具有 线性度为3.0以上,关于铁钛复合氧化物的线性数频率分布。