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    Positively chargeable toner, image forming method and image forming apparatus
    1.
    发明授权
    Positively chargeable toner, image forming method and image forming apparatus 有权
    可充电的调色剂，成像方法和图像形成装置

    公开(公告)号：US06235441B1

    公开(公告)日：2001-05-22

    申请号：US09465836

    申请日：1999-12-17

    申请人： Hirohide Tanikawa ,  Masami Fujimoto ,  Takakuni Kobori ,  Hiroyuki Fujikawa

    发明人： Hirohide Tanikawa ,  Masami Fujimoto ,  Takakuni Kobori ,  Hiroyuki Fujikawa

    IPC分类号： G03G900

    CPC分类号： G03G9/08793 ,  G03G9/08722 ,  G03G9/08726 ,  G03G9/0874 ,  G03G9/08791 ,  G03G9/08795 ,  G03G9/09758

    摘要： A positively chargeable toner suitable to be carried on a cylindrical developer-carrying member having a resinous surface for developing an electrostatic latent image is formed from a composition including a binder resin, an imidazole compound and a colorant. The binder resin comprises at least one member selected from the group consisting of (i) a mixture of vinyl resin having a carboxyl group and a vinyl resin having a glycidyl group, (ii) a vinyl resin having both a carboxyl group and a glycidyl group, and (iii) a vinyl resin having a carboxyl group and a glycidyl group in a form reacted with each other. The imidazole compound is a compound having an imidazo unit represented by formula (1) below: wherein R1-R4 independently denote hydrogen or a substituent as specified. In some cases, two or more such imidazole units can be included in a combined form to provide the imidazole compound. The imidazole compound is effective for promoting a crosslinking reaction between the carboxyl group and the glycidyl group to provide the toner with improved fixability and anti-offset property in combination.

    摘要翻译： 由具有粘合剂树脂，咪唑化合物和着色剂的组合物形成适于承载在具有用于显影静电潜像的树脂表面的圆筒形显影剂承载构件上的可充正电的调色剂。 粘合剂树脂包括选自（i）具有羧基的乙烯基树脂和具有缩水甘油基的乙烯基树脂的混合物中的至少一种，（ii）具有羧基和缩水甘油基的乙烯基树脂 ，和（iii）具有相互反应形式的具有羧基和缩水甘油基的乙烯基树脂。 咪唑化合物是具有由下式（1）表示的咪唑单元的化合物：其中R 1 -R 4独立地表示氢或如所规定的取代基。 在一些情况下，两种或多种这样的咪唑单元可以以组合形式包括以提供咪唑化合物。 咪唑化合物对于促进羧基和缩水甘油基之间的交联反应是有效的，以提供具有改进的定影性和抗偏移性的组合的调色剂。

    Toner
    2.
    发明授权
    Toner 有权
    爽肤水

    公开(公告)号：US06203959B1

    公开(公告)日：2001-03-20

    申请号：US09521378

    申请日：2000-03-08

    申请人： Hirohide Tanikawa ,  Masami Fujimoto ,  Takakuni Kobori ,  Hiroyuki Fujikawa

    发明人： Hirohide Tanikawa ,  Masami Fujimoto ,  Takakuni Kobori ,  Hiroyuki Fujikawa

    IPC分类号： G03G908

    CPC分类号： G03G9/08782

    摘要： An electrophotographic toner is formed of a resinous composition including a binder resin and a wax (A). The wax (A) contains at least 92 wt. % thereof of n (normal)-paraffin comprising a plurality of n-paraffin species having different numbers of carbon atoms, and provides a DSC (differential scanning calorimetry)-heat-absorption curve exhibiting a maximum heat-absorption peak showing a peaktop temperature of 70-90° C. and a half-value width of at most 12° C. As a result of the n-paraffin-rich characteristic and the DSC-thermal characteristic, the wax can exhibit an improved fixability-improving effect without showing an excessive plasticizing effect, whereby the toner can exhibit good fixability as well as good flowability and storage stability.

    摘要翻译： 电子照相调色剂由包含粘合剂树脂和蜡（A）的树脂组合物形成。 蜡（A）含有至少92重量％ 包含具有不同碳原子数的多个正链烷烃的n（正常） - 石蜡的％的％，并且提供显示最大吸热峰的DSC（差示扫描量热法） - 热吸收曲线，其显示峰顶温度 70-90℃，半值宽度最多为12℃。作为正链烷烃丰富特性和DSC-热特性的结果，蜡可以表现出改进的定影性改善效果，而不显示 过度的增塑效果，由此调色剂可以表现出良好的定影性以及良好的流动性和储存稳定性。

    Magnetic toner and image forming method
    3.
    发明授权
    Magnetic toner and image forming method 有权
    磁性调色剂和成像方法

    公开(公告)号：US06653036B1

    公开(公告)日：2003-11-25

    申请号：US09153898

    申请日：1998-09-16

    申请人： Hirohide Tanikawa ,  Masami Fujimoto ,  Takakuni Kobori ,  Hiroyuki Fujikawa

    发明人： Hirohide Tanikawa ,  Masami Fujimoto ,  Takakuni Kobori ,  Hiroyuki Fujikawa

    IPC分类号： G03G9083

    CPC分类号： G03G9/0833 ,  G03G9/0834 ,  G03G9/0837

    摘要： A magnetic toner includes a magnetic toner particle containing a binding resin and a magnetic material. The magnetic material includes a magnetic iron oxide containing 0.10% to 4.00% by weight of an element &agr; belonging to the third period to the seventh period with an atomic number of 11 to 103 and having an electronegativity of 1.0 to 2.5. The solubility S1 of &agr; in the magnetic material at an iron solubility of 0% to 20% is from 10% to less than 44% and the solubility S2 of &agr; at an iron solubility of 80% to 100% is from 5% to less than 30%. The magnetic material contains at least 60% by number of multinuclear magnetic iron oxide particles or at least 60% by number of polyhedral magnetic iron oxide particles having faces at ridgeline portions of hexahedron and/or octahedron multinuclear magnetic iron oxide particles.

    摘要翻译： 磁性调色剂包括含有粘合树脂和磁性材料的磁性调色剂颗粒。 磁性材料包括含有0.10重量％至4.00重量％的属于第三至第七周期的元素α的磁性氧化铁，其原子序数为11至103，电负性为1.0至2.5。 在铁溶解度为0％至20％的磁性材料中α的溶解度S1为10％至小于44％，铁溶解度为80％至100％的α的溶解度S2为5％以下 超过30％。 磁性材料含有至少60数量％的多核磁性氧化铁颗粒或至少60％数量的具有六面体和/或八面体多核磁性氧化铁颗粒的棱线部分的面的多面体磁性氧化铁颗粒。

    Toner and image forming method
    4.
    发明授权
    Toner and image forming method 失效
    调色剂和成像方法

    公开(公告)号：US6156471A

    公开(公告)日：2000-12-05

    申请号：US487703

    申请日：2000-01-19

    申请人： Takakuni Kobori ,  Hirohide Tanikawa ,  Masami Fujimoto ,  Hiroyuki Fujikawa

    发明人： Takakuni Kobori ,  Hirohide Tanikawa ,  Masami Fujimoto ,  Hiroyuki Fujikawa

    IPC分类号： G03G9/08 ,  G03G9/097

    CPC分类号： G03G9/097 ,  G03G9/0819

    摘要： An electrophotographic toner showing good cleanability and is suitable for use in developing an electrostatic latent image formed on an amorphous-silicon photosensitive member is provided. The toner includes toner particles each comprising a binder resin and a colorant, and inorganic fine powder A. The inorganic fine powder A contains 88.0-97.0 wt. % of a rare earth compound comprising a rare earth oxide. The rare earth compound contains 40.0-65.0 wt. % of Ce (calculated as CeO.sub.2), 25.0-45.0 wt. % of La (calculated as La.sub.2 O.sub.3), 1.0-10.0 wt. % of Nd (calculated as Nd.sub.2 O.sub.3) and 1.0-10.0 wt. % of Pr (calculated as Pr.sub.6 O.sub.11). The rare earth compound contains further a fluorinated rare earth compound in such an amount as to provide the inorganic fine powder A with a fluorine content of 2.0-11.0 wt. %.

    摘要翻译： 提供显示良好的可清洁性并适用于形成在非晶硅感光构件上形成的静电潜像的电子照相调色剂。 调色剂包括各自包含粘合剂树脂和着色剂的调色剂颗粒和无机细粉末A.无机细粉末A含有88.0-97.0重量％ ％的包含稀土氧化物的稀土化合物。 稀土化合物含有40.0-65.0wt。 Ce的Ce（以CeO 2计），25.0-45.0wt。 La的百分比（以La 2 O 3计），1.0-10.0重量％ Nd的Nd（以Nd 2 O 3计）和1.0-10.0重量％ Pr的百分比（按Pr6O11计算）。 稀土化合物还含有氟化稀土化合物，其量使无机细粉末A的氟含量为2.0-11.0重量％。 ％。

    Magnetic carrier and two-component developer
    9.
    发明授权
    Magnetic carrier and two-component developer 有权
    磁性载体和双组分显影剂

    公开(公告)号：US07279262B2

    公开(公告)日：2007-10-09

    申请号：US10988687

    申请日：2004-11-16

    申请人： Hiroyuki Fujikawa ,  Takayuki Itakura ,  Takakuni Kobori ,  Koh Ishigami ,  Nobuyoshi Sugahara ,  Yoshinobu Baba ,  Hirohide Tanikawa

    发明人： Hiroyuki Fujikawa ,  Takayuki Itakura ,  Takakuni Kobori ,  Koh Ishigami ,  Nobuyoshi Sugahara ,  Yoshinobu Baba ,  Hirohide Tanikawa

    IPC分类号： G03G9/113

    CPC分类号： G03G9/081 ,  G03G9/0804 ,  G03G9/0815 ,  G03G9/08722 ,  G03G9/08775 ,  G03G9/08777 ,  G03G9/08795 ,  G03G9/08797 ,  G03G9/09708

    摘要： A magnetic carrier composed of carrier particles is provided in which each carrier particle has a carrier core including magnetic fine particles and a binder resin with the carrier core surface being coated with a coat material containing a coat resin. In the magnetic carrier, Fatom/Catom and (Fatom/Catom)/(Fcalc/Ccalc) are respectively in specific ranges, wherein Fatom and Catom represent respectively a fluorine element abundance ratio and a carbon element abundance ratio at the magnetic carrier particle surface, and Fcalc and Ccalc represent respectively a fluorine element abundance ratio and a carbon element abundance ratio which are calculable from the molecular structure of the coat resin.In addition, a two-component developer is provoded including the magnetic carrier and a toner having a specific contact angle against water.

    摘要翻译： 提供由载体颗粒构成的磁性载体，其中每个载体颗粒具有包含磁性细颗粒的载体芯和粘合剂树脂，载体芯表面涂覆有包含涂层树脂的涂层材料。 在磁性载体中，Fatom / Catom和（Fatom / Catom）/（Fcalc / Ccalc）分别在特定范围内，其中Fatom和Catom分别代表磁性载体颗粒表面的氟元素丰度比和碳元素丰度比， Fcalc和Ccalc分别表示可从涂层树脂的分子结构计算的氟元素丰度比和碳元素丰度比。 此外，双组分显影剂被编织，包括磁性载体和具有与水的特定接触角的调色剂。