公开(公告)号：US08288070B2

公开(公告)日：2012-10-16

申请号：US12671576

申请日：2008-08-06

申请人： Hiroshi Mizuhata ,  Yutaka Murai ,  Manabu Suzuki ,  Hiromi Nambu

发明人： Hiroshi Mizuhata ,  Yutaka Murai ,  Manabu Suzuki ,  Hiromi Nambu

IPC分类号： G03G9/087

CPC分类号： G03G9/08755 ,  G03G9/0806 ,  G03G9/081 ,  G03G9/0827 ,  G03G9/09708 ,  G03G9/09725

摘要： The present invention relates to a toner for electrophotography which exhibits an excellent heat-resistant storage property and a wide fusing temperature range, and a process for producing the toner for electrophotography. There are provided a process for producing a toner for electrophotography which includes (A) a step of emulsifying a resin binder containing a polyester having a constitutional unit derived from a trivalent or higher-valent carboxylic acid in an aqueous medium; (B) a step of aggregating emulsified particles contained in an emulsion obtained in the step (A); and (C) a step of coalescing aggregated particles obtained in the step (B), said process further including the following steps which are to be conducted after the step (A): (a) a step of adding a compound having at least one functional group selected from the group consisting of an oxazoline group and a glycidyl group; and (b) a step of forming a chemical bond between the compound having the at least one functional group and the resin binder containing the polyester, as well as a toner for electrophotography obtained by the process.

摘要翻译： 本发明涉及一种电子照相用调色剂，其具有优异的耐热储存性能和较高的定影温度范围，以及一种用于制备电子照相用调色剂的方法。 提供一种电子照相用调色剂的制造方法，其包括（A）在含水介质中乳化含有具有来自三价以上的羧酸的结构单元的聚酯的树脂粘合剂的工序; （B）将工序（A）得到的乳液中所含的乳化粒子聚集的工序; 和（C）步骤（B）中获得的聚集颗粒的聚结步骤，所述方法还包括在步骤（A）之后进行的以下步骤：（a）添加具有至少一个 选自恶唑啉基和缩水甘油基的官能团; 和（b）在具有至少一个官能团的化合物和含有聚酯的树脂粘合剂之间形成化学键的步骤，以及通过该方法获得的用于电子照相的调色剂。

公开(公告)号：US20110223531A1

公开(公告)日：2011-09-15

申请号：US12671576

申请日：2008-08-06

申请人： Hiroshi Mizuhata ,  Yutaka Murai ,  Manabu Suzuki ,  Hiromi Nambu

发明人： Hiroshi Mizuhata ,  Yutaka Murai ,  Manabu Suzuki ,  Hiromi Nambu

IPC分类号： G03G9/087 ,  G03G9/08

CPC分类号： G03G9/08755 ,  G03G9/0806 ,  G03G9/081 ,  G03G9/0827 ,  G03G9/09708 ,  G03G9/09725

摘要： The present invention relates to a toner for electrophotography which exhibits an excellent heat-resistant storage property and a wide fusing temperature range, and a process for producing the toner for electrophotography. There are provided a process for producing a toner for electrophotography which includes (A) a step of emulsifying a resin binder containing a polyester having a constitutional unit derived from a trivalent or higher-valent carboxylic acid in an aqueous medium; (B) a step of aggregating emulsified particles contained in an emulsion obtained in the step (A); and (C) a step of coalescing aggregated particles obtained in the step (B), said process further including the following steps which are to be conducted after the step (A): (a) a step of adding a compound having at least one functional group selected from the group consisting of an oxazoline group and a glycidyl group; and (b) a step of forming a chemical bond between the compound having the at least one functional group and the resin binder containing the polyester, as well as a toner for electrophotography obtained by the process.

摘要翻译： 本发明涉及一种电子照相用调色剂，其具有优异的耐热储存性能和较高的定影温度范围，以及一种用于制备电子照相用调色剂的方法。 提供一种电子照相用调色剂的制造方法，其包括（A）在含水介质中乳化含有具有来自三价以上的羧酸的结构单元的聚酯的树脂粘合剂的工序; （B）将工序（A）得到的乳液中所含的乳化粒子聚集的工序; 和（C）步骤（B）中获得的聚集颗粒的聚结步骤，所述方法还包括在步骤（A）之后进行的以下步骤：（a）添加具有至少一个 选自恶唑啉基和缩水甘油基的官能团; 和（b）在具有至少一个官能团的化合物和含有聚酯的树脂粘合剂之间形成化学键的步骤，以及通过该方法获得的用于电子照相的调色剂。

公开(公告)号：US08632936B2

公开(公告)日：2014-01-21

申请号：US13516990

申请日：2010-12-17

申请人： Shoichi Murata ,  Eiji Shirai ,  Hiroshi Mizuhata ,  Manabu Suzuki

发明人： Shoichi Murata ,  Eiji Shirai ,  Hiroshi Mizuhata ,  Manabu Suzuki

IPC分类号： G03G9/087

CPC分类号： G03G9/0804 ,  G03G9/08755 ,  G03G9/08797 ,  G03G9/09733

摘要： A method for producing an electrophotographic toner, including steps of: (1) preparing a thermally treated resin particle dispersion by retaining, for one hour or longer at a temperature satisfying the formula: (melting point of the crystalline polyester (a1)−35) (° C.)

摘要翻译： 一种电子照相调色剂的制造方法，其特征在于，包括以下步骤：（1）通过在满足下式的结晶（结晶性聚酯（a1）-35的熔点）的温度下保持1小时以上制备热处理树脂颗粒分散液， （℃）

公开(公告)号：US08652748B2

公开(公告)日：2014-02-18

申请号：US13517362

申请日：2010-12-22

申请人： Manabu Suzuki ,  Hiroshi Mizuhata

发明人： Manabu Suzuki ,  Hiroshi Mizuhata

IPC分类号： G03G5/00

CPC分类号： G03G9/0804 ,  G03G9/08755 ,  G03G9/08795 ,  G03G9/08797 ,  G03G9/09392

摘要： The invention provides a process for producing a toner for electrophotography including the following (1) to (4): (1): adding an aggregating agent to a resin particle dispersion (a) so as to attain an aggregating agent concentration Ea (wt %), to thereby produce an aggregated particle dispersion (A); (2): adding a resin microparticle dispersion (b) to the dispersion (A), to thereby produce a dispersion (B) having an aggregating agent concentration Eb (wt %) satisfying 0.60≦Eb/Ea

摘要翻译： 本发明提供一种电子照相用调色剂的制造方法，包括以下（1）〜（4）：（1）：向树脂粒子分散液（a）中添加聚集剂，以获得聚集剂浓度Ea（wt％ ），从而产生凝集的颗粒分散体（A）; （2）：向分散体（A）中加入树脂微粒分散体（b），由此生成聚集剂浓度Eb（wt％）满足0.60×eb / Ea <1的分散液（B） （3）：改变分散体（B）的聚集剂浓度，由此生成聚集剂浓度Ec（wt％）满足0

公开(公告)号：US20120258392A1

公开(公告)日：2012-10-11

申请号：US13516990

申请日：2010-12-17

申请人： Shoichi Murata ,  Eiji Shirai ,  Hiroshi Mizuhata ,  Manabu Suzuki

发明人： Shoichi Murata ,  Eiji Shirai ,  Hiroshi Mizuhata ,  Manabu Suzuki

IPC分类号： G03G9/08

CPC分类号： G03G9/0804 ,  G03G9/08755 ,  G03G9/08797 ,  G03G9/09733

摘要： A method for producing an electrophotographic toner, including (1) a step of preparing a thermally treated resin particle dispersion by retaining, for one hour or longer at a temperature satisfying a specific formula, a dispersion of resin particles (A) having a volume median particle size of 0.02 μm to 2 μm and containing a resin containing a crystalline polyester (a1) in an amount of 1 to 50 wt % and an amorphous polyester (b1); (2) a step of preparing an aggregated particle dispersion by aggregating thermally treated resin particles contained in the thermally treated resin particle dispersion prepared through step 1; (2a) a step of preparing resin-fine-particle-attached aggregated particles by adding, to the aggregated particle dispersion prepared through step 2, a dispersion of resin fine particles (B) containing an amorphous polyester (b2) in an amount of 70 wt % or more; and (3) a step of unifying the resin-fine-particle-attached aggregated particles prepared through step 2a.

摘要翻译： 一种电子照相调色剂的制造方法，其特征在于，包括：（1）通过在满足特定式的温度下保持1小时以上制备热处理树脂颗粒分散液的步骤，具有体积中值 粒径为0.02〜2μm，含有含有1〜50重量％的结晶性聚酯（a1）的树脂和无定形聚酯（b1）; （2）通过聚集通过步骤1制备的热处理树脂颗粒分散体中包含的热处理树脂颗粒来制备凝聚颗粒分散体的步骤; （2a）通过向通过步骤2制备的凝集颗粒分散体中加入含有非晶形聚酯（b2）的树脂细颗粒（B）的分散体70，制备树脂 - 细颗粒附着凝集颗粒的步骤 重量％以上; 和（3）将通过步骤2a制备的树脂 - 细颗粒附着的凝集粒子统一的工序。

公开(公告)号：US20120251940A1

公开(公告)日：2012-10-04

申请号：US13517362

申请日：2010-12-22

申请人： Manabu Suzuki ,  Hiroshi Mizuhata

发明人： Manabu Suzuki ,  Hiroshi Mizuhata

IPC分类号： G03G9/087 ,  G03G9/093

CPC分类号： G03G9/0804 ,  G03G9/08755 ,  G03G9/08795 ,  G03G9/08797 ,  G03G9/09392

摘要： The invention provides a process for producing a toner for electrophotography including the following (1) to (4): (1): adding an aggregating agent to a resin particle dispersion (a) so as to attain an aggregating agent concentration Ea (wt %), to thereby produce an aggregated particle dispersion (A); (2): adding a resin microparticle dispersion (b) to the dispersion (A), to thereby produce a dispersion (B) having an aggregating agent concentration Eb (wt %) satisfying 0.60≦Eb/Ea

摘要翻译： 本发明提供一种电子照相用调色剂的制造方法，包括以下（1）〜（4）：（1）：向树脂粒子分散液（a）中添加聚集剂，以获得聚集剂浓度Ea（wt％ ），从而产生凝集的颗粒分散体（A）; （2）：向分散体（A）中添加树脂微粒分散体（b），由此生成聚集剂浓度Eb（wt％）满足0.60＆lt; ElE; Eb / Ea <1的分散液（B） （3）：改变分散体（B）的聚集剂浓度，从而制备聚合剂浓度Ec（wt％）满足0

公开(公告)号：US08980522B2

公开(公告)日：2015-03-17

申请号：US13996210

申请日：2011-12-21

申请人： Hiroshi Mizuhata

发明人： Hiroshi Mizuhata

IPC分类号： G03G9/087 ,  G03G9/08

CPC分类号： G03G9/0802 ,  G03G9/0804 ,  G03G9/08755 ,  G03G9/08797

摘要： The present invention relates to a process for producing a toner for development of electrostatic latent images which includes a step (1) of mixing and aggregating resin particles (A), releasing agent particles and an aggregating agent formed of a divalent to pentavalent amine salt in an aqueous medium to obtain aggregated particles, and a toner for development of electrostatic latent images obtained by the process.

摘要翻译： 本发明涉及一种静电潜像显影用调色剂的制造方法，其特征在于，包括将树脂粒子（A），脱模剂粒子和由二价至五价胺盐形成的凝集剂混合并凝集的工序（1） 获得凝集颗粒的水性介质和用于显影通过该方法获得的静电潜像的调色剂。

公开(公告)号：US08574808B2

公开(公告)日：2013-11-05

申请号：US11774284

申请日：2007-07-06

申请人： Hiroshi Mizuhata ,  Takashi Kubo ,  Takashi Mukai

发明人： Hiroshi Mizuhata ,  Takashi Kubo ,  Takashi Mukai

IPC分类号： G03G9/13

CPC分类号： G03G9/08755 ,  G03G9/0806 ,  G03G9/08791 ,  G03G9/08795 ,  G03G9/08797

摘要： The present invention relates to a resin emulsion being produced by neutralizing a resin binder containing acid group with a basic compound in an aqueous medium wherein the resin binder containing acid group contains a polyester produced from a raw monomer composition containing a trivalent or higher-valent polyhydric alcohol in an amount of 1 to 15 mol %; a process for producing the resin emulsion; and a toner for electrophotography using the resin emulsion. In the resin emulsion of the present invention, a resin is readily emulsified therein even when using a crosslinked polyester as the resin, and the resin emulsion is substantially free from hydrolysis of the resin and can produce a toner having an excellent heat-resistant storage property.

摘要翻译： 本发明涉及一种树脂乳液，其通过在水性介质中中和含有碱性化合物的酸性基团的树脂粘合剂来制造，其中含有酸基团的树脂粘合剂含有由含有三价或更多价多元醇的原料单体组合物制成的聚酯 醇量为1〜15摩尔％; 树脂乳液的制造方法; 和使用树脂乳液的电子照相用调色剂。 在本发明的树脂乳液中，即使使用交联聚酯作为树脂，树脂也容易乳化，树脂乳液基本上没有树脂的水解，并且可以制备具有优异的耐热存储性能的调色剂 。

公开(公告)号：US20110177445A1

公开(公告)日：2011-07-21

申请号：US13061912

申请日：2009-09-07

申请人： Shoichi Murata ,  Hiroshi Mizuhata ,  Nobumichi Kamiyoshi ,  Eiji Shirai

发明人： Shoichi Murata ,  Hiroshi Mizuhata ,  Nobumichi Kamiyoshi ,  Eiji Shirai

IPC分类号： G03G9/08

CPC分类号： G03G9/08797 ,  C08J3/05 ,  C08J3/07 ,  C08J2367/00 ,  G03G9/0804 ,  G03G9/08755

摘要： The present invention relates to a process for producing a dispersion of polyester particles which includes the step of emulsifying mixed polyester containing (1) an amorphous polyester containing a constitutional unit derived from a trivalent or higher-valent carboxylic acid in an amount of from 2.0 to 12.0 mol % on the basis of whole constitutional units of the whole amorphous polyester and (2) a crystalline polyester, in an aqueous medium in a single vessel, or the step of mixing the mixed polyester with an organic solvent and then adding the aqueous medium to the resulting mixture to emulsify the mixed polyester in a single vessel. The present invention also relates to a dispersion of polyester particles produced by the above production process, as well as a toner for electrophotography which is produced by subjecting the dispersion of the polyester particles to aggregation and coalescence and is excellent in both of a low-temperature fusing property and an anti-hot offset property, and a process for producing the toner.

摘要翻译： 本发明涉及一种聚酯粒子分散体的制造方法，其特征在于，包括将含有（1）含有来源于三价以上羧酸的结构单元的无定形聚酯的混合聚酯的工序 基于整个无定形聚酯的全部结构单元为12.0摩尔％，（2）结晶性聚酯，在单一容器中的水性介质中，或将混合聚酯与有机溶剂混合，然后添加水性介质 与所得混合物在单一容器中乳化混合的聚酯。 本发明还涉及通过上述制备方法制备的聚酯颗粒的分散体，以及通过使聚酯颗粒的分散体进行聚集和聚结而制备的电子照相用调色剂，并且在低温 熔融性和抗热粘合性，以及调色剂的制造方法。

公开(公告)号：US07575840B2

公开(公告)日：2009-08-18

申请号：US11396389

申请日：2006-03-31

申请人： Kouzou Teramoto ,  Yukinori Nakayama ,  Kousuke Satou ,  Hiroshi Mizuhata

发明人： Kouzou Teramoto ,  Yukinori Nakayama ,  Kousuke Satou ,  Hiroshi Mizuhata

IPC分类号： G03G9/00

CPC分类号： G03G9/0835 ,  G03G9/0837 ,  G03G9/0838

摘要： The toner of the present invention is characterized in that the charges rise up rapidly, the charge quantity is not insufficient nor excessive, the photoreceptor contamination is minimized and the toner is endurable under harsh conditions and against the high stress usage. The magnetic particle contained in the toner is of average particle size 0.01 μm through 0.50 μm, is of octahedron shape that is a convex polyhedron surrounded by eight triangles as a basis, each of vertexes and edges of the octahedron being in a curved surface shape and having a portion that can be taken as a straight line on the outer periphery of a projected image of said octahedron. The sphericity of the toner is 0.94 through 0.98. Here, the sphericity is defined by C2/C1, where C1 is a circumferential length of an image projected on a plane and C2 is a circumferential length of an assumed circle area as same as that of the projected image. Further, a number content of the toner of particle size 0.6 μm through 2.0 μm is smaller than 10%.

摘要翻译： 本发明的调色剂的特征在于，电荷迅速上升，电荷量不足也不过量，感光体污染最小化，并且调色剂在恶劣条件下耐受并且抵抗高应力使用。 包含在调色剂中的磁性颗粒的平均粒度为0.01μm至0.50μm，为八面体形状，是以8个三角形围绕的凸面多面体为基准，八面体的顶点和边缘为曲面形状， 具有可以被视为所述八面体的投影图像的外周上的直线的部分。 调色剂的球形度为0.94至0.98。 这里，球形度由C2 / C1定义，其中C1是投影在平面上的图像的圆周长度，C2是与投影图像相同的假定圆形区域的圆周长度。 此外，粒径为0.6μm至2.0μm的调色剂的数量少于10％。