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发明公开
CN108508717A 调色剂 有权

调色剂
摘要：
本发明涉及调色剂。提供含有调色剂颗粒和外部添加剂的调色剂，所述外部添加剂含有钛酸锶颗粒，其中调色剂的平均圆形度为至少0.935且不大于0.995，钛酸锶颗粒的一次颗粒的数均粒径为至少10nm且不大于60nm，在至少10°且不大于90°的2θ范围内获得的CuKαx射线衍射光谱中，钛酸锶颗粒在39.700°±0.150°范围内具有峰以及在46.200°±0.150°范围内具有峰，并且在46.200°±0.150°处的峰的面积Sb与在39.700°±0.150°处的峰的面积Sa的比例为至少1.80且不大于2.30，其中θ为布拉格角。
摘要（英）：

Provided is toner that contains a toner particle, and an external additive containing a strontium titanate particle, wherein the toner has an average circularity of at least 0.935 and not more than 0.995, the strontium titanate particle has a number-average primary particle diameter of at least 10 nm and not more than 60 nm, the strontium titanate particle has a peak in the range of 39.700° ± 0.150° and a peak in the range of 46.200° ± 0.150° in a CuK± x-ray diffraction spectrum obtained in the 2¸ range of at least 10° and not more than 90° where ¸ is the Bragg angle, and the ratio of the area Sb of the peak at 46.200° ± 0.150° to the area Sa of the peak at 39.700° ± 0.150° is at least 1.80 and not more than 2.30.

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