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    Positively chargeable toner, image forming method and image forming apparatus
    22.
    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
    23.
    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。

    Toner for developing electrostatic images
    24.
    发明授权
    Toner for developing electrostatic images 失效
    用于显影静电图像的调色剂

    公开(公告)号：US5972554A

    公开(公告)日：1999-10-26

    申请号：US064126

    申请日：1998-04-22

    申请人： Takayuki Nagatsuka ,  Hirohide Tanikawa ,  Makoto Unno

    发明人： Takayuki Nagatsuka ,  Hirohide Tanikawa ,  Makoto Unno

    IPC分类号： G03G9/087 ,  G03G9/097

    CPC分类号： G03G9/09733 ,  G03G9/08748

    摘要： A toner for developing electrostatic images is formed of toner particles comprising a binder resin and a colorant, and inorganic fine powder. The toner further contains: a phenol-aldehyde condensate mixture comprising an acyclic condensate and a cyclic condensate, respectively, of a phenol compound with an aldehyde compound, and the phenol-aldehyde condensate mixture contains 10-80 mol % of condensate components having 4-6 phenolic units. The phenol-aldehyde condensate mixture may be contained in or externally added to the toner particles. Because of the inclusion of an acyclic condensate and appropriate amount of condensate components having 4-6 phenolic units, the phenol-aldehyde condensate mixture may exhibit a good dispersibility in the binder resin and a good charge control performance.

    摘要翻译： 用于显影静电图像的调色剂由包含粘合剂树脂和着色剂的调色剂颗粒和无机细粉末形成。 调色剂还包含：苯酚 - 醛缩合物混合物，其分别包含酚化合物与醛化合物的无环缩合物和环状缩合物，酚醛缩合物混合物含有10-80摩尔％的具有4- 6酚单位。 酚醛缩合物混合物可以包含在调色剂颗粒中或外部添加到调色剂颗粒中。 由于包含非循环冷凝物和适量的具有4-6个酚单元的冷凝物组分，苯酚 - 醛缩合物混合物在粘合剂树脂中表现出良好的分散性和良好的电荷控制性能。

    Toner for developing electrostatic image and fixing method
    27.
    发明授权
    Toner for developing electrostatic image and fixing method 失效
    用于显影静电图像和定影方法的调色剂

    公开(公告)号：US5500318A

    公开(公告)日：1996-03-19

    申请号：US266478

    申请日：1994-06-27

    申请人： Hirohide Tanikawa ,  Masaki Uchiyama ,  Yoshinobu Joh ,  Yasutaka Akashi ,  Masaaki Taya ,  Makoto Unno

    发明人： Hirohide Tanikawa ,  Masaki Uchiyama ,  Yoshinobu Joh ,  Yasutaka Akashi ,  Masaaki Taya ,  Makoto Unno

    IPC分类号： G03G9/08 ,  G03G9/087 ,  G03G13/20 ,  G03G15/20

    CPC分类号： G03G9/0821 ,  G03G9/08797

    摘要： A toner for developing an electrostatic image is constituted by a binder resin and a colorant The binder resin is characterized by containing at least 20 wt. % of an extraction residue after 6 hours of extraction and below 20 wt. % of an extraction residue after 72 hours of extraction respectively by Soxhlet extraction with tetrahydrofuran. The toner shows a dynamic modulus and a loss modulus, respectively at 200.degree. C. and 0.1 Hz, which are substantially unchanging with time. The properties provide the toner with a harmonization of anti-offset characteristic and fixability as well as stable viscoelasticity under heating.

    摘要翻译： 用于显影静电图像的调色剂由粘合剂树脂和着色剂构成。粘合剂树脂的特征在于含有至少20重量％ 提取6小时后的提取残留物的％和低于20wt。 通过索氏提取用四氢呋喃分别提取72小时后的提取残留物的％。 调色剂分别在200℃和0.1Hz下分别显示出动态模量和损耗模量，其随时间基本上不变。 这些特性为调色剂提供了抗补偿特性和定影性的一致性以及在加热下的稳定的粘弹性。

    Image forming apparatus
    28.
    发明授权
    Image forming apparatus 失效
    图像形成装置

    公开(公告)号：US5298950A

    公开(公告)日：1994-03-29

    申请号：US998866

    申请日：1992-12-30

    申请人： Hirohide Tanikawa

    发明人： Hirohide Tanikawa

    IPC分类号： G03G9/083 ,  G03G9/08 ,  G03G13/08 ,  G03G13/09 ,  G03G15/08 ,  G03G15/09

    CPC分类号： G03G13/09 ,  G03G9/0823

    摘要： An image forming apparatus comprises a developer including a latent image carrying member, a toner carrying member and a toner container for developing an electrostatic latent image formed on the latent image carrying member, and a transfer member for transferring to a transfer medium a toner image formed on the latent image carrying member. The latent image carrying member and the toner carrying member are disposed within a given gap. The toner container holds a magnetic toner and the magnetic toner is fed onto the toner carrying member. The magnetic toner comprises a binder resin and a magnetic power and has a volume average particle diameter of from 7 .mu.m to 10 .mu.m, and the number distribution and quantity of triboelectricity of magnetic toner particles satisfy the following expressions:0.1.times.A+2.ltoreq.-Q.ltoreq.0.1.times.A+16where A represents a real number from 25 to 45 calculated as a coefficient of variation of number distribution, (S/D.sub.1)x 100, wherein S represents a standard deviation of the number distribution of magnetic toner particles and D.sub.1 represents a number average particle diameter (.mu.m), and where Q represents a value of the quantity of triboelectricity (.mu.c/g) of the magnetic toner produced by friction with an iron powder.

    摘要翻译： 图像形成装置包括显影剂，其包括潜像承载构件，调色剂承载构件和用于显影形成在潜像承载构件上的静电潜像的调色剂容器和用于将形成的调色剂图像转印到转印介质的转印构件 在潜像携带部件上。 潜像承载构件和调色剂承载构件设置在给定的间隙内。 调色剂容器保持磁性调色剂，并且磁性调色剂被供给到调色剂承载构件上。 磁性调色剂包括粘合剂树脂和磁力，并且体积平均粒径为7（my）m至10（my）m，磁性调色剂颗粒的摩擦电数量分布和数量满足下列表达式：0.1 * A + 2 <= - Q <= 0.1 * A + 16其中A表示作为数字分布的变化系数（S / D（OVS）1）×100计算的25至45的实数，其中S表示 磁性调色剂颗粒的数量分布和D（OVS）1的标准偏差表示数均粒径（（my）m），其中Q表示摩擦电量（（my）c / g）的值 通过与铁粉的摩擦产生的磁性调色剂。