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    • 5. 发明授权
    • Toner composition for electrophotography
    • 电子照相用调色剂组合物
    • US5705303A
    • 1998-01-06
    • US616760
    • 1996-03-15
    • Masanori IchimuraMichio TakeSusumu Saito
    • Masanori IchimuraMichio TakeSusumu Saito
    • G03G9/087G03G9/08G03G9/097
    • G03G9/09725G03G9/09716
    • A toner composition for electrophotography comprising toner particles comprising a binder and a colorant and an additive, wherein the additive is crystalline titanium dioxide fine particles which have been treated with a coupling agent and which have a specific surface area of 60 to 100 m.sup.2 /g and a Karl Fischer moisture content of not more than 5% by weight. Compounds represented by formulae (I), (II) or (III) are used as the coupling agent: R.sup.1 Si(X).sub.3 (I) R.sup.1' R.sup.2 Si(X).sub.2 (II) R.sup.1' R.sup.2 R.sup.3 SiX (III) wherein R.sup.1 represents an alkyl group having 9 to 20 carbon atoms; R.sup.1' represents an alkyl group having 1 to 20 carbon atoms; R.sup.2 and R.sup.3 each represent a hydrogen atom, an alkyl group having 1 to 20 carbon atoms or an aryl group having 6 to 30 carbon atoms; and X represents a chlorine atom, an alkoxy group having 1 to 10 carbon atoms or an acetoxy-group having 3 to 5 carbon atoms.
    • 一种电子照相用调色剂组合物,其包括含有粘合剂和着色剂和添加剂的调色剂颗粒,其中所述添加剂是已经用偶联剂处理并具有60-100m 2 / g比表面积的结晶二氧化钛细颗粒, 卡尔费休水分含量不超过5%重量。 由式(I),(II)或(III)表示的化合物用作偶联剂:R1Si(X)3(I)R1'R2Si(X)2(II)R1'R2R3SiX(Ⅲ)其中R1表示 具有9至20个碳原子的烷基; R1'表示碳原子数1〜20的烷基, R2和R3各自表示氢原子,碳原子数1〜20的烷基或碳原子数6〜30的芳基。 X表示氯原子,碳原子数1〜10的烷氧基或碳原子数3〜5的乙酰氧基。