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    • 4. 发明授权
    • Electrophotographic toner
    • 电子照相墨粉
    • US07723001B2
    • 2010-05-25
    • US11878214
    • 2007-07-23
    • Sang-woo Kim
    • Sang-woo Kim
    • G03G9/00
    • G03G9/09725G03G9/08728G03G9/08751G03G9/09708G03G9/09716G03G9/09733
    • An electrophotographic toner includes toner parent particles containing a binder resin, a colorant and a charge control agent; and an external additive added to the surface of the toner parent particles. The toner further includes positively chargeable silica and polymer beads in addition to large particle diameter silica, small particle diameter silica and titanium oxides. Thus, the toner can maintain its charge quantity and distribution stably even during environmental changes and after long image printing times, thereby preventing the contamination of the non-image part and the filming.
    • 电子照相调色剂包括含有粘合剂树脂,着色剂和电荷控制剂的调色剂母体颗粒; 以及添加到调色剂母体颗粒表面的外部添加剂。 除了大粒径二氧化硅,小粒径二氧化硅和氧化钛之外,调色剂还包括可带正电的二氧化硅和聚合物珠。 因此,即使在环境变化和长时间的图像打印时间后,调色剂也可以保持其电荷量和分布,从而防止非图像部分的污染和成膜。
    • 6. 发明授权
    • Preparation method of toner having micro radius
    • 具有微半径的调色剂的制备方法
    • US07378214B2
    • 2008-05-27
    • US11139562
    • 2005-05-31
    • Jun-young LeeSang-woo KimKyung-yol Yon
    • Jun-young LeeSang-woo KimKyung-yol Yon
    • G03G5/00
    • G03G9/0806
    • A preparation method of a toner having a micro diameter includes: blending a monomer and a dispersing agent in distilled water to prepare a monomer dispersion; polymerizing the monomer dispersion by adding a first polymerization initiator to about 1% by volume to about 50% by volume of the monomer, to cause a first polymerization; mixing the remaining monomer dispersion with the polymerized solution; and polymerizing the mixed solution by adding a wax emulsion and a second polymerization initiator, to cause a second polymerization. The present invention may be advantageously used for obtaining spherical, uniformly micro sized toner particles through the emulsion polymerization only, without performing the aggregation or melting process.
    • 具有微径的调色剂的制备方法包括:将单体和分散剂混合在蒸馏水中以制备单体分散体; 通过将第一聚合引发剂加入到约1体积%至约50体积%的单体中来聚合单体分散体,进行第一聚合; 将剩余的单体分散体与聚合溶液混合; 并通过添加蜡乳液和第二聚合引发剂使混合溶液聚合,以进行第二次聚合。 本发明可有利地用于仅通过乳液聚合获得球形均匀的微尺寸调色剂颗粒,而不进行聚集或熔融过程。