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    DEVELOPING AGENT AND METHOD FOR PRODUCING THE SAME
    2.
    发明申请
    DEVELOPING AGENT AND METHOD FOR PRODUCING THE SAME 审中-公开
    开发代理及其生产方法

    公开(公告)号：US20100209840A1

    公开(公告)日：2010-08-19

    申请号：US12638145

    申请日：2009-12-15

    申请人： Masahiro Ikuta ,  Takayasu Aoki ,  Takashi Urabe ,  Tsuyoshi Itou ,  Satoshi Araki ,  Motonari Udo ,  Takafumi Hara

    发明人： Masahiro Ikuta ,  Takayasu Aoki ,  Takashi Urabe ,  Tsuyoshi Itou ,  Satoshi Araki ,  Motonari Udo ,  Takafumi Hara

    IPC分类号： G03G9/12 ,  G03G5/00

    CPC分类号： G03G9/09392 ,  G03G9/0804 ,  G03G9/08797 ,  G03G9/09328 ,  G03G9/09371

    摘要： As a first dispersion liquid containing first fine particles and a second dispersion liquid containing second fine particles, those satisfy the relationship represented by the following formula (1) are used, and these two dispersion liquids are mixed with each other, and an aggregating agent and a pH adjusting agent are added thereto in sequence, whereby encapsulation is achieved by selective formation of core particles through aggregation of the first fine particles and shells through aggregation of the second fine particles. 15 mV≧|Z2−Z1|≧5 mV  (1) In the formula, Z1 and Z2 represent zeta potentials of the first dispersion liquid and the second dispersion liquid, respectively, measured when aluminum sulfate is added to each dispersion liquid in an amount of 1% by weight based on the solid content in each dispersion liquid.

    摘要翻译： 作为含有第一细小颗粒的第一分散液和含有第二细颗粒的第二分散液，使用满足由下式（1）表示的关系的第二分散液，将这两种分散液彼此混合，并将聚集剂和 依次加入pH调节剂，由此通过使第一细颗粒和壳通过第二细颗粒的聚集而聚集而选择性形成核心颗粒来实现包封。 15mV≥| Z2-Z1 |≥5mV（1）在式中，Z1和Z2分别表示当将各种分散液中的硫酸铝加入量时测定的第一分散液和第二分散液的ζ电位 相对于各分散液中的固体成分为1重量％。

    TONER AND PROCESS FOR PRODUCTION THEREOF
    4.
    发明申请
    TONER AND PROCESS FOR PRODUCTION THEREOF 有权
    调色剂及其生产方法

    公开(公告)号：US20130011775A1

    公开(公告)日：2013-01-10

    申请号：US13537387

    申请日：2012-06-29

    申请人： Tsuyoshi Itou ,  Motonari Udo ,  Kazuhisa Takeda ,  Takayasu Aoki ,  Masahiro Ikuta ,  Takafumi Hara

    发明人： Tsuyoshi Itou ,  Motonari Udo ,  Kazuhisa Takeda ,  Takayasu Aoki ,  Masahiro Ikuta ,  Takafumi Hara

    IPC分类号： G03G9/00 ,  G03G15/08

    CPC分类号： G03G9/09371 ,  G03G9/09307 ,  G03G9/09321 ,  G03G9/0935 ,  G03G9/09392

    摘要： Disclosed is a toner obtained by coating surfaces of core particles including at least a binder resin having a carboxyl group and a coloring agent with successive coatings of a water-soluble crosslinking agent capable of crosslinking with a carboxyl group and a water-soluble polymer having a carboxyl group, which have been successively applied on the core particles and crosslinked with each other. The thus-formed toner is provided with a good harmony of favorable fixability represented by a low lowest fixable temperature and favorable storage stability represented by little aggregation after standing at 50° C. for 8 hours.

    摘要翻译： 公开了一种调色剂，其通过将至少包含具有羧基的粘合剂树脂和着色剂的核心颗粒的表面涂覆到能够与羧基交联的水溶性交联剂的连续涂层和具有羧基的水溶性聚合物 羧基，其已经连续地施加在核心颗粒上并彼此交联。 这样形成的调色剂具有以低最低定影温度表示的良好的定影性和由在50℃下放置8小时后几乎没有聚集性而获得的有利的储存稳定性的良好的调和性。

    TONER AND PROCESS FOR PRODUCTION THEREOF
    5.
    发明申请
    TONER AND PROCESS FOR PRODUCTION THEREOF 审中-公开
    调色剂及其生产方法

    公开(公告)号：US20120328977A1

    公开(公告)日：2012-12-27

    申请号：US13525627

    申请日：2012-06-18

    申请人： Masahiro Ikuta ,  Takayasu Aoki ,  Tsuyoshi Itou ,  Motonari Udo ,  Takafumi Hara ,  Kazuhisa Takeda

    发明人： Masahiro Ikuta ,  Takayasu Aoki ,  Tsuyoshi Itou ,  Motonari Udo ,  Takafumi Hara ,  Kazuhisa Takeda

    IPC分类号： G03G9/093

    CPC分类号： G03G9/0928 ,  G03G9/09307 ,  G03G9/0935 ,  G03G9/09392

    摘要： Encapsulated toner particles are formed by: aggregating core material particles containing at least a colorant and a core material resin in an aqueous dispersion medium to form core particles; adding coating resin particles into the aqueous dispersion medium during progress of the formation of the core material at a point of time when the volume-based median particle diameter of the core particles formed by the aggregation reaches 30 to 83% of that of desired toner particles; and continuing the aggregation to form a coating layer composed of a composite aggregate of the core material particles and the coating resin particles on the core material. In the thus-obtained toner, the colorant is uniformly and well incorporated in the toner particles, and therefore, the coloring ability is improved without causing a problem of release of fine powder.

    摘要翻译： 通过以下方法形成封装的调色剂颗粒：将含有至少着色剂的芯材颗粒和芯材树脂在水分散介质中聚集以形成芯颗粒; 在由聚集体形成的芯颗粒的基于体积的中值粒径达到期望的调色剂颗粒的30至83％的时间点时，在芯材料的形成过程中将涂料树脂颗粒加入到水性分散介质中 ; 并且继续聚集以形成由芯材料颗粒和涂覆树脂颗粒在芯材上的复合骨料组成的涂层。 在这样得到的调色剂中，着色剂均匀且良好地结合到调色剂颗粒中，因此着色能力得到改善，而不会引起细粉的释放。