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    • 1. 发明授权
    • Low shear toner aggregation processes
    • 低剪切调色剂聚集工艺
    • US5650255A
    • 1997-07-22
    • US706880
    • 1996-09-03
    • T. Hwee NgArthur HelbrechtRaj D. PatelGrazyna E. Kmiecik-LawrynowiczDavid KurcebaFrancisco E. TorresDavid J. Sanders
    • T. Hwee NgArthur HelbrechtRaj D. PatelGrazyna E. Kmiecik-LawrynowiczDavid KurcebaFrancisco E. TorresDavid J. Sanders
    • G03G9/08G03G9/087
    • G03G9/0804G03G9/0819
    • An in situ chemical process for the preparation of toner comprised of(i) the provision of a latex, which latex is comprised of polymeric resin particles, an ionic surfactant and a nonionic surfactant;(ii) providing a pigment dispersion, which dispersion is comprised of a pigment solution, a counterionic surfactant with a charge polarity of opposite sign to that of said ionic surfactant, and optionally a charge control agent;(iii) mixing said pigment dispersion with said latex with a stirrer equipped with an impeller, stirring at speeds of from about 100 to about 900 rpm for a period of from about 10 minutes to about 150 minutes;(iv) heating the above resulting blend of latex and pigment mixture to a temperature below about the glass transition temperature (Tg) of the resin to form electrostatically bound toner size aggregates;(v) adding further aqueous ionic surfactant or stabilizer in the range amount of from about 0.1 percent to 5 percent by weight of reactants to stabilize the above electrostatically bound toner size aggregates;(vi) heating said electrostatically bound toner sized aggregates above about the Tg of the resin to form toner size particles containing pigment, resin and optionally a charge control agent;(vii) optionally isolating said toner, optionally washing with water; and optionally(viii) drying said toner.
    • 用于制备调色剂的原位化学方法包括(i)提供胶乳,所述胶乳由聚合树脂颗粒,离子表面活性剂和非离子表面活性剂组成; (ii)提供颜料分散体,该分散体由颜料溶液,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任选的电荷控制剂组成; (iii)将所述颜料分散体与所述胶乳混合,配备有叶轮的搅拌器,以约100至约900rpm的速度搅拌约10分钟至约150分钟; (iv)将上述胶乳和颜料混合物的混合物加热到低于树脂的玻璃化转变温度(Tg)的温度,以形成静电结合的调色剂尺寸聚集体; (v)加入其量为约0.1%至5%(重量)的反应物的水性离子表面活性剂或稳定剂,以稳定上述静电结合的调色剂尺寸聚集体; (vi)将所述静电结合的调色剂大小的聚集体加热到树脂的Tg附近,以形成含有颜料,树脂和任选的电荷控制剂的调色剂尺寸颗粒; (vii)任选地分离所述调色剂,任选地用水洗涤; 和(viii)干燥所述调色剂。
    • 4. 发明申请
    • Toners and processes thereof
    • 调色剂及其工艺
    • US20050136350A1
    • 2005-06-23
    • US10744791
    • 2003-12-23
    • Vincenzo MarcelloDavid KurcebaNancy HuntCheih-Min ChengTie Ng
    • Vincenzo MarcelloDavid KurcebaNancy HuntCheih-Min ChengTie Ng
    • B01F3/12G03G9/00G03G9/08G03G9/087
    • G03G9/0804
    • Disclosed is an oil-less toner composition exhibiting good low temperature release and stripping in fixing, enhanced surface gloss of fixed image, and/or OHP transparency. By controlling one or more properties, such as the relative thermal energy input during the EA aggregation/coalescence process, using a wax having a certain dispersion size (D50), molecular weight and/or melting temperature, the toner particle produced thereby can achieve optimal surface wax protrusion with a surface wax content of about 12 to about 25 weight percent. This is based on the total amount of wax in the toner, as determined by x-ray photoelectron spectroscopy (XPS). The contamination of wax on developing rolls, photoreceptor and carriers, which lowers the reliability of the developer, is suppressed with the present exemplary embodiment.
    • 公开了一种无油调色剂组合物,其在定影中表现出良好的低温释放和剥离,增强固定图像的表面光泽度和/或OHP透明度。 通过控制一个或多个性能,例如在EA聚集/聚结过程期间的相对热能输入,使用具有一定分散体尺寸(D50),分子量和/或熔融温度的蜡,由此产生的调色剂颗粒可以达到最佳 表面蜡突起具有约12至约25重量%的表面蜡含量。 这是基于通过x射线光电子能谱(XPS)测定的调色剂中蜡的总量。 在本示例性实施例中,抑制了显影辊,感光体和载体上的蜡污染,这降低了显影剂的可靠性。
    • 7. 发明申请
    • Toners and processes thereof
    • 调色剂及其工艺
    • US20060194134A1
    • 2006-08-31
    • US11396817
    • 2006-04-03
    • Vincenzo MarcelloDavid KurcebaNancy HuntCheih-Min ChengTie Ng
    • Vincenzo MarcelloDavid KurcebaNancy HuntCheih-Min ChengTie Ng
    • G03G9/08
    • G03G9/0804
    • Disclosed is an oil-less toner composition exhibiting good low temperature release and stripping in fixing, enhanced surface gloss of fixed image, and/or OHP transparency. By controlling one or more properties, such as the relative thermal energy input during the EA aggregation/coalescence process, using a wax having a certain dispersion size (D50), molecular weight and/or melting temperature, the toner particle produced thereby can achieve optimal surface wax protrusion with a surface wax content of about 12 to about 25 weight percent. This is based on the total amount of wax in the toner, as determined by x-ray photoelectron spectroscopy (XPS). The contamination of wax on developing rolls, photoreceptor and carriers, which lowers the reliability of the developer, is suppressed with the present exemplary embodiment.
    • 公开了一种无油调色剂组合物,其在定影中表现出良好的低温释放和剥离,增强固定图像的表面光泽度和/或OHP透明度。 通过控制一个或多个性能,例如在EA聚集/聚结过程期间的相对热能输入,使用具有一定分散体尺寸(D50),分子量和/或熔融温度的蜡,由此产生的调色剂颗粒可以达到最佳 表面蜡突起具有约12至约25重量%的表面蜡含量。 这是基于通过x射线光电子能谱(XPS)测定的调色剂中蜡的总量。 在本示例性实施例中,抑制了显影辊,感光体和载体上的蜡污染,这降低了显影剂的可靠性。