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    Single component developer
    4.
    发明授权
    Single component developer 有权
    单组件开发人员

    公开(公告)号：US07704665B2

    公开(公告)日：2010-04-27

    申请号：US11861706

    申请日：2007-09-26

    申请人： Grazyna E Kmiecik-Lawrynowicz ,  Daniel W Asarese ,  Maura A Sweeney ,  Robert D Bayley

    发明人： Grazyna E Kmiecik-Lawrynowicz ,  Daniel W Asarese ,  Maura A Sweeney ,  Robert D Bayley

    IPC分类号： G03G9/13

    CPC分类号： G03G9/0806 ,  G03G9/0819 ,  G03G9/08711 ,  G03G9/08782 ,  G03G9/08795 ,  G03G9/08797 ,  G03G9/093 ,  G03G9/09321 ,  G03G9/09364 ,  G03G9/09378 ,  G03G9/09385 ,  G03G9/09392

    摘要： A method for developing toner for use in a single component development system, wherein the process includes a) contacting a styrene acrylate polymer binder resin having a weight average molecular weight (Mw) of from about 50 to about 100 Kpse, and a number average molecular weight (Mn) of from about 10 to about 30 Kpse, a wax selected from the group consisting of polypropylene and polyethylene, and at least one colorant to produce a toner blend, b) aggregating the blend by heating at a temperature at or above the glass transition temperature of the styrene acrylate resin to form an aggregated toner core; c) adding a second binder resin to the aggregated toner core to form a shell over said toner core thereby forming a core-shell toner; d) growing said core-shell toner to a desired size; e) coalescing the core-shell toner by heating at a temperature above the glass transition temperature of the second latex; and f) recovering toner particles, wherein the toner particles have an onset glass transition temperature of from about 50° C. to about 60° C., and a circularity of from about 0.950 to about 0.990.

    摘要翻译： 一种用于单组分显影系统中用于显影调色剂的方法，其中该方法包括：a）使重均分子量（Mw）为约50至约100Kpse的数均分子量 重量（Mn）为约10至约30Kpse，选自聚丙烯和聚乙烯的蜡和至少一种着色剂以产生调色剂共混物，b）通过在等于或高于 苯乙烯丙烯酸酯树脂的玻璃化转变温度以形成聚集的调色剂核心; c）向聚集的调色剂芯中加入第二粘合剂树脂以在所述调色剂芯上形成壳，从而形成核 - 壳调色剂; d）将所述核 - 壳调色剂生长至所需尺寸; e）通过在高于第二胶乳的玻璃化转变温度的温度下加热来聚合核 - 壳调色剂; 和f）回收调色剂颗粒，其中调色剂颗粒的起始玻璃化转变温度为约50℃至约60℃，圆形度为约0.950至约0.990。

    Surface particle attachment process, and particles made therefrom
    9.
    发明授权
    Surface particle attachment process, and particles made therefrom 有权
    表面颗粒附着工艺和由其制成的颗粒

    公开(公告)号：US07276320B2

    公开(公告)日：2007-10-02

    申请号：US11037215

    申请日：2005-01-19

    申请人： Grazyna E. Kmiecik-Lawrynowicz ,  Maura A. Sweeney ,  Robert D. Bayley ,  Ronald J. Koch ,  Mary L. McStravick ,  Daniel W. Asarese

    发明人： Grazyna E. Kmiecik-Lawrynowicz ,  Maura A. Sweeney ,  Robert D. Bayley ,  Ronald J. Koch ,  Mary L. McStravick ,  Daniel W. Asarese

    IPC分类号： G03G9/08

    CPC分类号： G03G9/0804 ,  G03G9/0806 ,  G03G9/0819 ,  G03G9/0825 ,  G03G9/0827 ,  G03G9/08711 ,  G03G9/08773 ,  G03G9/08797

    摘要： A method of forming toner particles having surface particles attached thereto includes the steps of aggregating a material of at least one binder material and at least one colorant to produce toner particles, following aggregation, forming a mixture of the surface particles and the toner particles, and subjecting the mixture to a temperature above the glass transition temperature of the toner particles to coalesce the toner particles, whereby the surface particles become at least partially embedded within the surface of the toner particles. Toner particles prepared by such method include a core comprised of at least one binder and at least one colorant, and surface particles at an external surface of the toner particles, wherein at least about 50% of the surface particles are substantially completely covered by a portion of binder and a majority of the surface particles protrude from the toner particle surface a distance of at least 50% of the average particle size of the surface particles.

    摘要翻译： 形成附着有表面颗粒的调色剂颗粒的方法包括以下步骤：聚集至少一种粘合剂材料和至少一种着色剂的材料以产生调色剂颗粒，聚集后形成表面颗粒和调色剂颗粒的混合物，以及 使混合物的温度高于调色剂颗粒的玻璃化转变温度以使调色剂颗粒聚结，由此表面颗粒至少部分地嵌入调色剂颗粒的表面内。 通过这种方法制备的调色剂颗粒包括由至少一种粘合剂和至少一种着色剂组成的芯和在调色剂颗粒的外表面处的表面颗粒，其中至少约50％的表面颗粒基本上完全被部分 的粘合剂，并且大部分表面颗粒从调色剂颗粒表面突出出至少50％的表面颗粒的平均粒度的距离。