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：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：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％。

公开(公告)号：US20060222983A1

公开(公告)日：2006-10-05

申请号：US11394349

申请日：2006-03-30

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

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

IPC分类号： G03G9/083

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

摘要： The object is to provide a magnetic toner with which toner scattering, toner spent to carrier, development of scratch streaks by the magnetic brush on the photoreceptor drum can be prevented for a prolonged period and a good image characteristic (in image density and background fogging) can be maintained for a prolonged period, and an image forming method using the magnetic toner. A two-component developer comprising carriers and toner which contains magnetic particle at least in a binder resin thereof, the magnetic particle being of basically polyhedral shaped shape, vertexes and edges of said polyhedral shape being curved surfaces, said shape having peripheral parts taken as straight lines in a projected image thereof, saturation magnetization of said toner in a magnetic field of 79.6 kA/m being 4.0 to 15.0 Am2/kg, is prepared, and the toner retaining members (carriers) bearing at least said magnetic toner to which electric charge is injected are allowed to face a latent image retaining member and an electrostatic latent image on said latent image retaining member is developed with said magnetic toner.

摘要翻译： 本发明的目的是提供一种磁性调色剂，其中调色剂飞散，用于载体的调色剂，感光鼓上的磁刷产生刮痕，可以延长时间并且具有良好的图像特性（图像浓度和背景雾化） 可以维持较长时间，以及使用该磁性调色剂的图像形成方法。 至少在其粘合剂树脂中含有磁性颗粒的载体和调色剂的双组分显影剂，所述磁性颗粒基本上是多面体形状，所述多面体形状的顶点和边缘是曲面，所述形状具有周边部分 在其投影图像中的线，在79.6kA / m的磁场中的所述调色剂的饱和磁化强度为4.0至15.0Am 2 / kg，并且调色剂保持构件（载体）承载于 允许注入电荷的至少所述磁性调色剂面对潜像保持部件，并且利用所述磁性调色剂使所述潜像保持部件上的静电潜像显影。

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：US08067144B2

公开(公告)日：2011-11-29

申请号：US12109120

申请日：2008-04-24

申请人： Hiroshi Mizuhata ,  Takashi Kubo ,  Takashi Mukai ,  Hidehito Ikebata ,  Katsutoshi Aoki

发明人： Hiroshi Mizuhata ,  Takashi Kubo ,  Takashi Mukai ,  Hidehito Ikebata ,  Katsutoshi Aoki

IPC分类号： G03G9/087 ,  C08L69/00

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

摘要： The present invention relates to a polyester having an excellent hydrolysis resistance even when used in a process for producing a toner for electrophotography which includes a step of forming a raw material into particles in an aqueous medium, and a toner for electrophotography which contains the polyester and is excellent in storage stability and fixing property. There are provided a polyester for a toner for electrophotography which is used in a process for producing a toner including a step of forming a raw material component into particles in an aqueous medium or a solution, and produced by polycondensing an alcohol component with a carboxylic acid component containing at least one compound selected from the group consisting of an alkyl succinic acid and an alkenyl succinic acid, as well as a toner for electrophotography which contains the polyester.

摘要翻译： 本发明涉及一种具有优异的耐水解性的聚酯，即使在制造用于电子照相的调色剂的方法中使用时，其包括在水性介质中将原料形成为颗粒的步骤，以及含有聚酯的电子照相用调色剂和 储存稳定性和定影性优异。 提供了一种用于电子照相用调色剂的聚酯，其用于生产调色剂的方法中，所述调色剂包括将原料组分在水性介质或溶液中形成颗粒的步骤，并且通过使醇组分与羧酸缩聚而制备 含有至少一种选自烷基琥珀酸和链烯基琥珀酸的化合物的组分，以及含有聚酯的电子照相用调色剂。

公开(公告)号：US07575839B2

公开(公告)日：2009-08-18

申请号：US11394349

申请日：2006-03-30

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

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

IPC分类号： G03G9/00

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

摘要： The object is to provide a magnetic toner with which toner scattering, toner spent to carrier, development of scratch streaks by the magnetic brush on the photoreceptor drum can be prevented for a prolonged period and a good image characteristic (in image density and background fogging) can be maintained for a prolonged period, and an image forming method using the magnetic toner. A two-component developer comprising carriers and toner which contains magnetic particle at least in a binder resin thereof, the magnetic particle being of basically polyhedral shaped shape, vertexes and edges of said polyhedral shape being curved surfaces, said shape having peripheral parts taken as straight lines in a projected image thereof, saturation magnetization of said toner in a magnetic field of 79.6 kA/m being 4.0 to 15.0 Am2/kg, is prepared, and the toner retaining members (carriers) bearing at least said magnetic toner to which electric charge is injected are allowed to face a latent image retaining member and an electrostatic latent image on said latent image retaining member is developed with said magnetic toner.

摘要翻译： 本发明的目的是提供一种磁性调色剂，其中调色剂飞散，用于载体的调色剂，感光鼓上的磁刷产生刮痕，可以延长时间并且具有良好的图像特性（图像浓度和背景雾化） 可以维持较长时间，以及使用该磁性调色剂的图像形成方法。 至少在其粘合剂树脂中含有磁性颗粒的载体和调色剂的双组分显影剂，所述磁性颗粒基本上是多面体形状，所述多面体形状的顶点和边缘是曲面，所述形状具有周边部分 在其投影图像中的线条，在79.6kA / m的磁场中所述调色剂的饱和磁化强度为4.0至15.0Am 2 / kg，并且将至少带有所述磁性调色剂的调色剂保持部件（载体） 被注入面对潜像保持构件，并且利用所述磁性调色剂使所述潜像保持构件上的静电潜像显影。

公开(公告)号：US07410740B2

公开(公告)日：2008-08-12

申请号：US11376623

申请日：2006-03-15

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

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

IPC分类号： G03G9/00

CPC分类号： G03G9/0837 ,  G03G9/0819 ,  G03G9/0827 ,  G03G9/0835 ,  G03G9/0838

摘要： The developer comprises magnetic toners and the magnetic carriers which forms magnetic ears on the surface of the developing roller. The magnetic toner is of an average particle size 0.01 μm through 0.50 μm and is of octahedron shape that is a convex polyhedron surrounded by eight triangles as a basis, each of the vertexes edges of the octahedron shape toner 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 the octahedron shape toner. The magnetic ears are electrically charged by the friction between the magnetic toner and the magnetic carriers and the magnetic ears on the developing roller are carried to the electrostatic latent image on the photoreceptor. The latent image is developed by the magnetic toners in the magnetic ears, in a small gap between the developing roller and the photoreceptor.

摘要翻译： 显影剂包括磁性调色剂和在显影辊表面上形成磁耳的磁性载体。 磁性调色剂的平均粒径为0.01μm至0.50μm，是八面体形状，是由八个三角形围绕的凸多面体作为基准，八面体形状调色剂的每个顶点边缘为曲面形状，并具有 可以在八面体形状调色剂的投影图像的外周上被视为直线的部分。 磁性耳朵由磁性调色剂和磁性载体之间的摩擦带电，并且显影辊上的磁耳被承载在感光体上的静电潜像上。 潜影由磁性耳朵中的磁性调色剂在显影辊和感光体之间的小间隙中显影。

公开(公告)号：US20070092818A1

公开(公告)日：2007-04-26

申请号：US11258205

申请日：2005-10-26

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

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

IPC分类号： G03G9/083

CPC分类号： G03G9/0832 ,  G03G9/0833 ,  G03G9/09708 ,  G03G9/09716 ,  G03G9/09725

摘要： A magnetic single component toner for electrostatic latent image development, which is used in a magnetic single component toner projection development method using an a-Si photosensitive member having a film thickness of no more than 30 μm, and a cleaning blade as a cleaning means for removing toner from the surface of this photosensitive member, so as to develop an electrostatic latent image formed on the photosensitive member, with a developing agent bearing member, comprises strontium titanate which has been rendered hydrophobic and has a specific surface area of 8.0 to 30 m2/g, and which is added as an external additive at a ratio of 0.3 to 5.0 parts by mass with respect to 100 parts by mass of the toner particle.

摘要翻译： 一种用于静电潜像显影的磁性单组分调色剂，其用于使用具有不超过30μm的膜厚的a-Si感光构件的磁性单组分调色剂投影显影方法和清洁刮板作为清洁装置 从该感光构件的表面去除调色剂，以显影形成在感光构件上的静电潜像与显影剂承载构件一起包括已经变得疏水并且具有8.0至30μm的比表面积的钛酸锶 相对于100质量份的调色剂颗粒，其以0.3-5.0质量份的比例作为外部添加剂加入。