公开(公告)号：US5910389A

公开(公告)日：1999-06-08

申请号：US962703

申请日：1997-11-03

申请人： Yasuo Matsumura ,  Manabu Serizawa ,  Masaaki Suwabe ,  Shuji Sato ,  Yasuo Kadokura ,  Hisao Morijiri ,  Takeshi Shoji ,  Takahiro Mizoguchi

发明人： Yasuo Matsumura ,  Manabu Serizawa ,  Masaaki Suwabe ,  Shuji Sato ,  Yasuo Kadokura ,  Hisao Morijiri ,  Takeshi Shoji ,  Takahiro Mizoguchi

IPC分类号： G03G9/08 ,  G03G9/087 ,  G03G9/16

CPC分类号： G03G9/081 ,  G03G9/0819 ,  G03G9/0827 ,  G03G9/08795 ,  G03G9/08797

摘要： According to the present invention, the method for producing toner for developing an image of electrostatic charge comprises the steps of producing a dispersion liquid of flocculated particles by forming the flocculated particles in a dispersion liquid comprising at least dispersed resin particles, forming combined particles by dispersing a liquid dispersion comprising dispersed fine resin particles into the dispersion liquid of flocculated particles so that the fine resin particles adhere to the flocculated particles and forming toner particles by fusing the combined particles by heating, wherein the molecular weight distribution curve of the resin in the toner particles by a gel permeation chromatography has at least two peaks or shoulders. According to the present invention, it is possible to produce toner for developing an image of electrostatic charge which is particularly superior in chargeability and the stability of the chargeability.

摘要翻译： 根据本发明，用于制造静电荷图像显影用调色剂的方法包括以下步骤：通过在包含至少分散的树脂颗粒的分散液中形成絮凝颗粒来生产絮凝颗粒的分散液，通过分散形成组合颗粒 液体分散体，其包括将细小树脂颗粒分散到絮凝颗粒的分散液中，使得细树脂颗粒通过加热熔合组合颗粒而附着于絮凝颗粒并形成调色剂颗粒，其中调色剂中树脂的分子量分布曲线 通过凝胶渗透色谱法的颗粒具有至少两个峰或肩。 根据本发明，可以生产出带电性和充电性稳定性特别优异的静电荷图像的调色剂。

公开(公告)号：US5998078A

公开(公告)日：1999-12-07

申请号：US4343

申请日：1998-01-08

申请人： Masaaki Suwabe ,  Yasuo Matsumura ,  Manabu Serizawa ,  Shuji Sato ,  Yasuo Kadokura ,  Hisao Morijiri ,  Takahiro Mizuguchi ,  Takeshi Shoji

发明人： Masaaki Suwabe ,  Yasuo Matsumura ,  Manabu Serizawa ,  Shuji Sato ,  Yasuo Kadokura ,  Hisao Morijiri ,  Takahiro Mizuguchi ,  Takeshi Shoji

IPC分类号： G03G9/09 ,  G03G9/08 ,  G03G9/087 ,  G03G15/08

CPC分类号： G03G9/0804

摘要： The present invention provides a method of preparing a toner for electrostatic charge image development comprising the steps of a liquid mixture preparation process for preparing a liquid mixture by mixing at least a resin particle dispersion prepared by dispersing resin particles in a solution including a dispersing agent having a polarity, and a coloring agent particle dispersion prepared by dispersing coloring agent particles in a solution including a dispersing agent having a polarity, an aggregated particle dispersion preparation process for preparing an aggregated particle dispersion by forming aggregated particles in the liquid mixture, and a fusion process for fusing the aggregated particles by heating, wherein the first dispersing agent and the second dispersing agent have the same polarity, a toner for electrostatic charge image development obtained by the method, an electrostatic charge image developer containing the toner and a carrier for electrophotography, and an image forming method comprising the steps of a process for forming an electrostatic latent image on an electrostatic latent image carrying member, a process for forming a toner image by developing the electrostatic latent image by a developer layer on a developing carrying member, and a transfer process for transferring the toner image onto a transferring member.

摘要翻译： 本发明提供一种制备静电荷图像显影用调色剂的方法，包括以下步骤：通过混合至少一种通过将树脂颗粒分散在包含分散剂的溶液中制备的树脂颗粒分散体来制备液体混合物，所述溶液包括具有 极性和通过将着色剂颗粒分散在包含具有极性的分散剂的溶液中制备的着色剂颗粒分散体，通过在液体混合物中形成凝集颗粒来制备凝集颗粒分散体的凝集颗粒分散体制备方法，以及熔融 通过加热使凝集颗粒熔合的方法，其中第一分散剂和第二分散剂具有相同的极性，通过该方法获得的用于静电荷图像显影的调色剂，含有调色剂的静电荷图像显影剂和用于电子照相的载体， 和图像f 该方法包括以下步骤：在静电潜像承载部件上形成静电潜像的方法，通过显影承载部件上的显影剂层使静电潜像显影形成调色剂图像的工艺，以及转印工艺 将调色剂图像转印到转印部件上。

公开(公告)号：US6022662A

公开(公告)日：2000-02-08

申请号：US63349

申请日：1998-04-21

申请人： Yasuo Matsumura ,  Manabu Serizawa ,  Masaaki Suwabe ,  Shuji Sato ,  Yasuo Kadokura ,  Hisao Morijiri ,  Takeshi Shoji ,  Takahiro Mizuguchi

发明人： Yasuo Matsumura ,  Manabu Serizawa ,  Masaaki Suwabe ,  Shuji Sato ,  Yasuo Kadokura ,  Hisao Morijiri ,  Takeshi Shoji ,  Takahiro Mizuguchi

IPC分类号： G03G9/08 ,  G03G9/087 ,  G03G9/09 ,  G03G15/08

CPC分类号： G03G9/0819

摘要： Disclosed is toner for developing an electrostatic image, which toner has a volume average particle size distribution index (GSDv) of 1.3 or less, and a ratio of the volume average particle size distribution index (GSDv) to a number average particle size distribution index (GSDp), i.e., (GSDv/GSDp), of 0.95 or more. A method suited for producing the toner for developing an electrostatic image comprises the steps of producing a dispersion liquid of flocculated particles by forming the flocculated particles in a dispersion liquid containing at least resin particles dispersed therein, forming adhered particles by admixing a liquid dispersion comprising fine particles dispersed therein with the dispersion liquid comprising the flocculated particles so that the fine particles adhere to the flocculated particles, and forming toner particles by fusing the adhered particles upon heating. This method for producing the toner for developing an electrostatic image provides the toner excellent in chargeability and having a long life.

摘要翻译： 公开了用于显影静电图像的调色剂，该调色剂的体积平均粒径分布指数（GSDv）为1.3以下，体积平均粒径分布指数（GSDv）与数均粒径分布指数（ GSDp），即（GSDv / GSDp）为0.95以上。 一种适于制造用于显影静电图像的调色剂的方法包括以下步骤：通过在至少含有分散在其中的树脂颗粒的分散液中形成絮凝颗粒来形成絮凝颗粒的分散液，通过混合包含细微的液体分散体形成附着颗粒 其中分散有包含絮凝颗粒的分散液的颗粒使得细颗粒粘附到絮凝颗粒上，并且通过在加热时熔化附着颗粒而形成调色剂颗粒。 用于制造用于显影静电图像的调色剂的方法提供了带电性优异且寿命长的调色剂。

公开(公告)号：US5985501A

公开(公告)日：1999-11-16

申请号：US81202

申请日：1998-05-19

申请人： Shuji Sato ,  Yasuo Matsumura ,  Manabu Serizawa ,  Masaaki Suwabe ,  Yasuo Kadokura ,  Hisao Morijiri ,  Takeshi Shouji ,  Takahiro Mizukuchi ,  Junichi Tomonaga ,  Kouichi Sugiyama

发明人： Shuji Sato ,  Yasuo Matsumura ,  Manabu Serizawa ,  Masaaki Suwabe ,  Yasuo Kadokura ,  Hisao Morijiri ,  Takeshi Shouji ,  Takahiro Mizukuchi ,  Junichi Tomonaga ,  Kouichi Sugiyama

IPC分类号： G03G9/08 ,  G03G9/087 ,  G03G9/12 ,  G03G15/08

CPC分类号： G03G9/0804

摘要： The toner for developing an electrostatic charge image has a sharp particle size distribution, an improved cleaning property even if the toner has small particle diameter, and a stable charging property, developing property and transfer property regardless of change of environment. By use of the toner, a highly precise image may be obtained.In a toner for developing an electrostatic charge image prepared by a wet process, the dielectric loss factor of the toner particles is 100 or less. In addition, when the toner particles are dissolved in an organic solvent and mixed with deionized water, the electrical conductance of the solution is desirably 100 ms or less and the surface tension thereof is desirably 20 mN or more. The toner may be obtained by forming agglomerated particles with stirring in a dispersion in which resin particles are dispersed to granulate; heating the toner particles to Tg or higher of the binder resin; stirring; and cleaning. With a wet process, the added stabilizing agent such as a surfactant can be removed.

摘要翻译： 用于显影静电荷图像的调色剂具有尖锐的粒度分布，即使调色剂具有小的粒径，并且具有稳定的带电性，显影性和转印性，而不管环境变化如何，清洁性都得到改善。 通过使用调色剂，可以获得高精度的图像。 在用于显影通过湿法制备的静电荷图像的调色剂中，调色剂颗粒的介电损耗因子为100以下。 此外，当调色剂颗粒溶解在有机溶剂中并与去离子水混合时，溶液的电导率优选为100ms以下，表面张力优选为20mN以上。 调色剂可以通过在分散体中搅拌形成附聚颗粒而获得，其中树脂颗粒分散在其中分散成颗粒状; 将调色剂颗粒加热至粘合剂树脂的Tg或更高; 搅拌 和清洁。 通过湿法，可以除去添加的稳定剂如表面活性剂。