公开(公告)号：US5427885A

公开(公告)日：1995-06-27

申请号：US218915

申请日：1994-03-28

申请人： Nobuyasu Ota ,  Toyoko Imai ,  Jun Saito ,  Tokudai Ogawa

发明人： Nobuyasu Ota ,  Toyoko Imai ,  Jun Saito ,  Tokudai Ogawa

IPC分类号： G03G9/087 ,  G03G9/08

CPC分类号： G03G9/0806

摘要： A process for producing a toner for developing an electrostatic image, including the steps of: adding to an aqueous dispersion medium a polymerizable monomer composition comprising at least a polymerizable monomer and a colorant uniformly dissolved or dispersed in the polymerizable monomer, wherein the aqueous dispersion medium containing as a dispersion stabilizer a hardly water-soluble metal hydroxide colloid formed by a reaction of a water-soluble polyvalent metal salt with an alkali metal hydroxide in an aqueous phase; and subjecting the polymerizable monomer composition to suspension polymerization, thereby to produce particles having a volume-average particle size in the range of from 2 to 20 .mu.m and a particle size distribution (a ratio of volume-average particle size/number-average particle size) of not more than 1.6.

摘要翻译： 一种用于生产用于显影静电图像的调色剂的方法，包括以下步骤：向水性分散介质中加入至少包含可聚合单体和均匀溶解或分散在可聚合单体中的着色剂的可聚合单体组合物，其中水分散介质 含有水溶性多价金属盐与碱金属氢氧化物在水相中反应形成的几乎不溶于水的金属氢氧化物胶体作为分散稳定剂; 并使可聚合单体组合物进行悬浮聚合，从而产生体积平均粒度在2至20μm的粒子和粒度分布（体积平均粒径/数均粒子的比例 尺寸）不超过1.6。

公开(公告)号：US07226714B2

公开(公告)日：2007-06-05

申请号：US10927133

申请日：2004-08-27

申请人： Nobuyasu Ota

发明人： Nobuyasu Ota

IPC分类号： G03G9/08

CPC分类号： G03G9/09392 ,  G03G9/0806 ,  G03G9/0819 ,  G03G9/0821 ,  G03G9/0827

摘要： A process for producing a polymerized toner, comprising a step 1 of preparing a polymerizable monomer composition comprising at least a polymerizable monomer and a colorant, and a step 2 of polymerizing the polymerizable monomer composition in an aqueous medium to form a colored polymer particles, wherein the step 1 comprises a dispersing step of dispersing the colorant finely in a mixed solution comprising at least a polymerizable monomer and a colorant with a media dispersing machine which comprises a rotor and a media particle separation screen mounted on a driving shaft and is operable to rotate simultaneously in association with rotation of the driving shaft.

摘要翻译： 一种制备聚合调色剂的方法，包括制备至少包含可聚合单体和着色剂的可聚合单体组合物的步骤1，以及在水性介质中聚合可聚合单体组合物以形成着色聚合物颗粒的步骤2，其中 步骤1包括分散步骤，其将着色剂精细地分散在包含至少可聚合单体和着色剂的混合溶液中，所述介质分散机包括安装在驱动轴上的转子和介质颗粒分离筛，并且可操作以旋转 同时与驱动轴的旋转相关联。

公开(公告)号：US5716748A

公开(公告)日：1998-02-10

申请号：US686677

申请日：1996-07-26

申请人： Jun Hasegawa ,  Katsuhiro Imai ,  Nobuyasu Ota ,  Kazunori Shigemori

发明人： Jun Hasegawa ,  Katsuhiro Imai ,  Nobuyasu Ota ,  Kazunori Shigemori

IPC分类号： G03G9/08 ,  G03G9/087 ,  G03G9/097

CPC分类号： G03G9/08708 ,  G03G9/0825 ,  G03G9/08728 ,  G03G9/097

摘要： The invention provides a developer comprising toner particles and a finely particulate polymer, wherein the finely particulate polymer is a finely particulate polymer of core-shell structure, which has a core part formed of a vinyl aromatic hydrocarbon polymer and a shell part formed of a (meth)acrylic ester polymer, and is obtained by a soap-free emulsion polymerization process. The developer has stable flowability and charging properties. The invention also provides such a finely particulate polymer and a preparation process thereof.

摘要翻译： 本发明提供一种包含调色剂颗粒和细颗粒聚合物的显影剂，其中细颗粒聚合物是核 - 壳结构的细颗粒聚合物，其具有由乙烯基芳族烃聚合物形成的芯部分和由（ 甲基）丙烯酸酯聚合物，并且通过无皂乳液聚合方法获得。 开发者具有稳定的流动性和充电性能。 本发明还提供了这种细颗粒聚合物及其制备方法。

公开(公告)号：US07078144B2

公开(公告)日：2006-07-18

申请号：US10736556

申请日：2003-12-17

申请人： Nobuyasu Ota ,  Toshihiko Yamato

发明人： Nobuyasu Ota ,  Toshihiko Yamato

IPC分类号： G03G5/00

CPC分类号： G03G9/0817 ,  G03G9/0806 ,  G03G9/0815 ,  G03G9/0819 ,  G03G9/093 ,  G03G9/09307 ,  G03G9/0935

摘要： The present invention relates to a method for manufacturing a toner with adjusted particle size distribution having a step of preparing colored particles that contain a binder resin and a colorant, and a step of classifying the colored particles. In the classification step, a classifier that has a plurality of vane-wheel classifying rotors coaxially in a casing, enables the rotating speed of each classifying rotor to be set to be the same as or different from each other, and can simultaneously perform a plurality of stages of classification corresponding to each classifying rotor is used; and the powder material comprising colored particles to which a fluidizing agent is added is fed to the classifier to perform classification.

摘要翻译： 本发明涉及具有调整粒度分布的调色剂的制造方法，该调色剂具有制备含有粘合剂树脂和着色剂的着色颗粒的步骤，以及着色颗粒分级步骤。 在分级步骤中，具有同轴地设置在壳体中的多个叶轮分级转子的分级器使得能够将各分级转子的转速设定为相同或不同，并且能够同时进行多个 使用与每个分级转子对应的分级阶段; 并将含有流化剂的着色颗粒的粉末材料进料到分级机进行分级。

公开(公告)号：US06740463B2

公开(公告)日：2004-05-25

申请号：US10174533

申请日：2002-06-19

申请人： Kazunori Shigemori ,  Hidetoshi Azuma ,  Yoshihiro Makuta ,  Hirosi Yamamoto ,  Nobuyasu Ota ,  Kazuhiro Sato ,  Ryuji Ota

发明人： Kazunori Shigemori ,  Hidetoshi Azuma ,  Yoshihiro Makuta ,  Hirosi Yamamoto ,  Nobuyasu Ota ,  Kazuhiro Sato ,  Ryuji Ota

IPC分类号： G03G908

CPC分类号： G03G9/09733 ,  G03G9/0808 ,  G03G9/0819 ,  G03G9/09708

摘要： A method of producing a toner having a process of mixing colored particles and outer-additives by using a mixer with an agitating blade whose shaft portion is sealed with a gas having a flow rate of from 0.4 m3/hr to 3 m3/hr and which rotates at such a high speed as a peripheral speed at a tip of said agitating blade in a range of from 20 m/sec to 50 m/sec. When the colored particles and outer-additives are mixed with each other, there is no generation of aggregates thereby and the toner can be obtained at a high yield. Therefore the toner which hardly generates a white streak and fog, even after a long period of continuous operation of development of electrophotographs is performed, can be obtained.

摘要翻译： 一种调色剂的制造方法，其特征在于，使用具有流动速度为0.4m 3 / hr〜3m的气体密封轴的搅拌叶片的混合机混合有色粒子和外部添加剂的方法， 3> / hr，并且以与所述搅拌叶片的尖端处的圆周速度一样高的速度在20m / sec至50m / sec的范围内旋转。 当着色颗粒和外部添加剂彼此混合时，不会产生聚集体，从而可以高产率获得调色剂。 因此，即使经过长时间的电子照相显影的连续操作，也可以获得难以产生白色条纹和雾的调色剂。

公开(公告)号：US07517631B2

公开(公告)日：2009-04-14

申请号：US10792750

申请日：2004-03-05

申请人： Nobuyasu Ota

发明人： Nobuyasu Ota

IPC分类号： G03G9/093 ,  G03G9/08

CPC分类号： G03G9/0819 ,  G03G9/0806 ,  G03G9/0812 ,  G03G9/0815

摘要： In a method for manufacturing a polymerized toner, in a washing step after polymerization, colored polymer particles are washed using a continuous pressurizing filter in a circulation washing manner, in which a dispersion containing colored polymer particles obtained in the polymerization step is supplied by pressure to the inlet of the continuous pressurizing filter from a slurry tank that stores the dispersion; the dispersion is filtered in the filter while stirring; the concentrated dispersion is fed back to the slurry tank from the outlet; a washing solution in a quantity equivalent to the quantity of the filtrate filtered by filtration is added to the slurry tank to dilute the filtrate; and the dispersion diluted by the washing solution is circulated in the filter.

摘要翻译： 在聚合调色剂的制造方法中，在聚合后的洗涤工序中，使用连续加压过滤器以循环洗涤方式洗涤有色聚合物颗粒，其中将在聚合步骤中获得的含有着色聚合物颗粒的分散体通过压力提供给 来自储存分散体的浆料罐的连续加压过滤器的入口; 在搅拌下将分散体在过滤器中过滤; 浓缩的分散体从出口反馈到浆料罐; 将与过滤过滤的滤液量相当的洗涤溶液加入到浆料罐中以稀释滤液; 并且通过洗涤溶液稀释的分散体在过滤器中循环。

公开(公告)号：US20050048393A1

公开(公告)日：2005-03-03

申请号：US10927133

申请日：2004-08-27

申请人： Nobuyasu Ota

发明人： Nobuyasu Ota

IPC分类号： G03G9/087 ,  G03G9/08 ,  G03G9/093

CPC分类号： G03G9/09392 ,  G03G9/0806 ,  G03G9/0819 ,  G03G9/0821 ,  G03G9/0827

摘要： A process for producing a polymerized toner, comprising a step 1 of preparing a polymerizable monomer composition comprising at least a polymerizable monomer and a colorant, and a step 2 of polymerizing the polymerizable monomer composition in an aqueous medium to form a colored polymer particles, wherein the step 1 comprises a dispersing step of dispersing the colorant finely in a mixed solution comprising at least a polymerizable monomer and a colorant with a media dispersing machine which comprises a rotor and a media particle separation screen mounted on a driving shaft and is operable to rotate simultaneously in association with rotation of the driving shaft.

摘要翻译： 一种制备聚合调色剂的方法，包括制备至少包含可聚合单体和着色剂的可聚合单体组合物的步骤1，以及在水性介质中聚合可聚合单体组合物以形成着色聚合物颗粒的步骤2，其中 步骤1包括分散步骤，其将着色剂精细地分散在包含至少可聚合单体和着色剂的混合溶液中，所述介质分散机包括安装在驱动轴上的转子和介质颗粒分离筛，并且可操作以旋转 同时与驱动轴的旋转相关联。