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    Toner for developing electrostatic image
    1.
    发明授权
    Toner for developing electrostatic image 失效
    用于显影静电图像的调色剂

    公开(公告)号：US5795694A

    公开(公告)日：1998-08-18

    申请号：US649073

    申请日：1996-05-16

    申请人： Masaki Uchiyama ,  Tatsuya Nakamura ,  Shinya Yachi

    发明人： Masaki Uchiyama ,  Tatsuya Nakamura ,  Shinya Yachi

    IPC分类号： G03G9/08 ,  G03G9/087 ,  G03G9/093

    CPC分类号： G03G9/0806 ,  G03G9/0825 ,  G03G9/0827 ,  G03G9/08782 ,  G03G9/093 ,  G03G9/09364 ,  G03G9/09371 ,  G03G9/09392

    摘要： A toner for developing an electrostatic image has toner particles containing a binder resin and a colorant. The toner particle has at least a core composed of a low-temperature softening substance, an inner layer enclosing the core, and an outer layer enclosing the core and the inner layer. The core, the inner layer, and the outer layer are constituted respectively of a material which is discriminable by staining with triruthenium tetroxide and triosmium tetroxide.

    摘要翻译： 用于显影静电图像的调色剂具有含有粘合剂树脂和着色剂的调色剂颗粒。 调色剂颗粒至少具有由低温软化物质构成的芯，包围芯的内层和包围芯和内层的外层。 核心，内层和外层分别由可以通过用四氧化钌和四氧化锇染色来区分的材料构成。

    Image forming apparatus having an alternating bias electric field
    4.
    发明授权
    Image forming apparatus having an alternating bias electric field 失效
    具有交替偏置电场的图像形成装置

    公开(公告)号：US5202731A

    公开(公告)日：1993-04-13

    申请号：US935431

    申请日：1992-08-26

    申请人： Hirohide Tanikawa ,  Yasutaka Akashi ,  Masaaki Taya ,  Kuniko Kobayashi ,  Masaki Uchiyama

    发明人： Hirohide Tanikawa ,  Yasutaka Akashi ,  Masaaki Taya ,  Kuniko Kobayashi ,  Masaki Uchiyama

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

    CPC分类号： G03G9/0819 ,  G03G13/09 ,  G03G15/0907

    摘要： An image forming apparatus is formed by providing a latent image-bearing member for holding an electrostatic image thereon and a toner-carrying member for carrying a prescribed magnetic toner comprising a binder resin and magnetic powder and having a particle size distribution including 12% by number or more of magnetic toner particles of 5 microns or smaller, 33% by number or less of magnetic toner particles of 8-12.7 microns and 2% by volume or less of magnetic toner particles of 16 microns or larger so as to provide a volume-average particle size of 4-10 microns. At the developing station, an alternating bias voltage comprising a DC voltage and an unsymmetrical AC voltage in superposition is applied between the toner-carrying member and the latent image-bearing member to provide an alternating bias electric field comprising a development-side voltage component and a reverse-development side voltage component. The development-side voltage component has a magnitude equal to or larger than that of the reverse development-side voltage component and a duration smaller than that of the reverse-development side voltage component, so that the magnetic toner on the toner-carrying member, particularly fine powdery fraction thereof effective for high-quality development, is effectively transferred to the latent image-bearing member to develop the electrostatic image thereon at the developing station.

    摘要翻译： 通过在其上提供用于保持静电图像的潜像承载部件和用于承载包含粘合剂树脂和磁粉的规定的磁性调色剂的调色剂承载部件形成图像形成装置，其粒度分布包括12数量级 或更多的8微米或更小的磁性调色剂颗粒，8-12.7微米的磁性调色剂颗粒的数量少于33％，以及16微米或更大的磁性调色剂颗粒的2体积％以下的磁性调色剂颗粒， 平均粒径为4-10微米。 在显影站，在调色剂承载构件和潜像承载构件之间施加包括直流电压和不对称交流电压的交替偏置电压，以提供包括显影侧电压分量的交流偏置电场和 反向显影侧电压分量。 显影侧电压分量的幅度等于或大于反显影侧电压分量的幅度，并且持续时间小于反向显影侧电压分量的幅度，使得调色剂承载元件上的磁性调色剂， 特别是对于高质量显影有效的细粉末级分有效地转移到潜像承载部件，以在显影站上显影静电图像。

    Magnetic toner having defined particle distribution
    7.
    发明授权
    Magnetic toner having defined particle distribution 失效
    具有确定颗粒分布的磁性调色剂

    公开(公告)号：US5504272A

    公开(公告)日：1996-04-02

    申请号：US246754

    申请日：1994-05-20

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

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

    IPC分类号： G03G9/08 ,  G03G9/087 ,  G03G13/09 ,  G03G15/09 ,  G03G15/08

    CPC分类号： G03G13/09 ,  G03G15/0907 ,  G03G9/0819 ,  G03G9/08795

    摘要： An image forming method in which a toner-carrying member for carrying a specific magnetic toner is placed adjacent a latent image-bearing member for carrying an electrostatic latent image so as to form a developing region of a predetermined gap size. The magnetic toner on the toner-carrying member forms a toner layer of a regulated thickness smaller than the above-mentioned gap. An asymmetric bias is applied to the magnetic toner so as to cause the magnetic toner from the toner-carrying member to be conveyed to the latent image-bearing member thereby to develop the electrostatic latent image.

    摘要翻译： 一种图像形成方法，其中用于承载特定磁性调色剂的调色剂承载构件邻近用于承载静电潜像的潜像承载构件放置以形成预定间隙尺寸的显影区域。 调色剂承载构件上的磁性调色剂形成的调色剂层的厚度小于上述间隙。 对磁性调色剂施加不对称偏压，使得来自调色剂承载构件的磁性调色剂被输送到潜像承载部件，从而显影静电潜像。

    Process for producing toner
    9.
    发明授权
    Process for producing toner 失效
    生产调色剂的方法

    公开(公告)号：US5415967A

    公开(公告)日：1995-05-16

    申请号：US45227

    申请日：1993-04-13

    申请人： Kiichiro Sakashita ,  Masaki Uchiyama ,  Masami Fujimoto ,  Kiyoshi Mizoe

    发明人： Kiichiro Sakashita ,  Masaki Uchiyama ,  Masami Fujimoto ,  Kiyoshi Mizoe

    IPC分类号： G03G9/08 ,  G03G9/097 ,  G03G9/00

    CPC分类号： G03G9/09725 ,  G03G9/081 ,  G03G9/0819 ,  G03G9/09708

    摘要： A process for producing a toner comprises the steps of mixing toner particles having a weight average particle diameter of from 2 to 15 .mu.m, with an external additive to prepare a toner, and passing the resulting toner through a sieve. The sieve has a wire cloth of twill weave that satisfies the following condition:0.052.ltoreq.d mm .ltoreq.0.208100.ltoreq.W .mu.m .ltoreq.1807.3.times.10.sup.-4 .ltoreq.d mm / W .mu.m.ltoreq.9.1.times.10.sup.-4wherein d represents average diameter of the wire used in the sieve, and W represents an aperture size of the sieve.

    摘要翻译： 调色剂的制造方法包括将重均粒径为2〜15μm的调色剂颗粒与外部添加剂混合以制备调色剂，并使得到的调色剂通过筛子的步骤。 该筛具有斜纹织物，其满足以下条件：0.052

    Toner for developing electrostatic image
    10.
    发明授权
    Toner for developing electrostatic image 失效
    用于显影静电图像的调色剂

    公开(公告)号：US5330871A

    公开(公告)日：1994-07-19

    申请号：US797915

    申请日：1991-11-26

    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 ,  G03G9/00

    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20wt。 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。