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    • 63. 发明授权
    • Toner aggregation processes
    • 调色剂聚合过程
    • US5501935A
    • 1996-03-26
    • US373806
    • 1995-01-17
    • Raj D. PatelMichael A. HopperPaul J. GerroirGrazyna E. Kmiecik-Lawrynowicz
    • Raj D. PatelMichael A. HopperPaul J. GerroirGrazyna E. Kmiecik-Lawrynowicz
    • G03G9/08G03G9/087G03G9/097
    • G03G9/0819G03G9/0804G03G9/08706G03G9/08708G03G9/08711G03G9/08728G03G9/09733G03G9/0975
    • A process for the preparation of toner compositions consisting essentially of(i) preparing a pigment dispersion, which dispersion is comprised of a pigment, an ionic surfactant, and optionally a charge control agent;(ii) shearing said pigment dispersion with a latex or emulsion blend comprised of resin, a counterionic surfactant with a charge polarity of opposite sign to that of said ionic surfactant, and a nonionic surfactant;(iii) heating the above sheared blend below about the glass transition temperature (Tg) of the resin to form electrostatically bound toner size aggregates with a narrow particle size distribution;(iv) subsequently adding further anionic or nonionic surfactant solution to minimize further growth in the coalescence (v); and(v) heating said bound aggregates above about the Tg of the resin and wherein said heating is from a temperature of about 103.degree. to about 120.degree. C., and wherein said toner compositions are spherical in shape.
    • 一种制备调色剂组合物的方法,其基本上由(i)制备颜料分散体组成,该分散体由颜料,离子表面活性剂和任选的电荷控制剂组成; (ii)用由树脂,具有与所述离子表面活性剂相反的电荷极性的反离子表面活性剂和非离子表面活性剂组成的胶乳或乳液共混物剪切所述颜料分散体; (iii)将上述剪切混合物加热至低于树脂的玻璃化转变温度(Tg),以形成具有窄粒度分布的静电结合的调色剂尺寸聚集体; (iv)随后加入其它阴离子或非离子表面活性剂溶液以最小化聚结中的进一步生长(v); 和(v)在所述树脂的Tg附近加热所述结合的聚集体,并且其中所述加热温度为约103℃至约120℃,并且其中所述调色剂组合物的形状为球形。