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    Magnetic toner
    1.
    发明授权
    Magnetic toner 有权
    磁性调色剂

    公开(公告)号：US06638674B2

    公开(公告)日：2003-10-28

    申请号：US09911724

    申请日：2001-07-25

    申请人： Keiji Komoto ,  Tsuyoshi Takiguchi ,  Tatsuhiko Chiba ,  Michihisa Magome ,  Akira Hashimoto ,  Takeshi Kaburagi ,  Eriko Yanase

    发明人： Keiji Komoto ,  Tsuyoshi Takiguchi ,  Tatsuhiko Chiba ,  Michihisa Magome ,  Akira Hashimoto ,  Takeshi Kaburagi ,  Eriko Yanase

    IPC分类号： G03G9083

    CPC分类号： G03G9/08791 ,  G03G9/0821 ,  G03G9/0825 ,  G03G9/0827 ,  G03G9/083 ,  G03G9/08726

    摘要： A magnetic toner is formed of magnetic toner particles each comprising a binder resin, an iron oxide, a sulfur-containing polymer, and inorganic fine powder blended with the magnetic toner particles, the toner having a weight-average particle size (D4) of 3-10 &mgr;m, and either (a) an average circularity of at least 0.970, and a magnetization of 10-50 Am2/kg (emu/g) at a magnetic field of 79.6 kA/m (1000 oersted), or (b) toner particles which retain carbon in an amount of A and iron in an amount of B at surfaces thereof, satisfying: B/A

    摘要翻译： 磁性调色剂由各自包含粘合剂树脂，氧化铁，含硫聚合物和与磁性调色剂颗粒混合的无机细粉末的磁性调色剂颗粒形成，调色剂的重均粒径（D4）为3 -10μm，并且（a）在79.6kA / m（1000奥斯特）的磁场下的平均圆形度为至少0.970，磁化强度为10-50Am 2 / kg（emu / g），或 （b）在其表面保留B量的A和铁的碳的调色剂颗粒满足：B / A <0.001，并且含有至少50数量的D / C的磁性调色剂颗粒< 0.02，其中C表示颗粒投影面积当量圆直径，D表示磁性调色剂颗粒的表面与其中所含的氧化铁颗粒之间的最小距离。

    Image forming method and apparatus
    3.
    发明授权
    Image forming method and apparatus 失效
    图像形成方法和装置

    公开(公告)号：US07043175B2

    公开(公告)日：2006-05-09

    申请号：US09987490

    申请日：2001-11-15

    申请人： Keiji Komoto ,  Tsuyoshi Takiguchi ,  Tatsuhiko Chiba ,  Michihisa Magome ,  Akira Hashimoto ,  Takeshi Kaburagi

    发明人： Keiji Komoto ,  Tsuyoshi Takiguchi ,  Tatsuhiko Chiba ,  Michihisa Magome ,  Akira Hashimoto ,  Takeshi Kaburagi

    IPC分类号： G03G15/00 ,  G03G15/02

    CPC分类号： G03G9/0827 ,  G03G5/08214 ,  G03G9/0819 ,  G03G9/0835 ,  G03G9/09708 ,  Y10S430/102

    摘要： In an image forming system, an image-bearing member having a photoconductor layer comprising an Si-based non-single crystal material is charged at a relatively low potential of 250 to 600 volts by a contact charging member in the presence of electroconductive fine powder. An electrostatic latent image formed on the image-bearing member is developed with a magnetic toner which includes magnetic toner particles comprising at least a binder resin and a magnetic iron oxide, and inorganic fine powder and electroconductive fine powder present at the surface of the magnetic toner particles. The magnetic toner has a weight-average particle size of 3-10 μm and an average circularity of 0.950 to 0.995, and contains 0.05 to 3.00% of isolated iron-containing particles.

    摘要翻译： 在图像形成系统中，具有包含Si基非单晶材料的光电导体层的图像承载部件在导电细粉存在的情况下通过接触充电部件以相对较低的电压250至600伏特进行充电。 形成在图像承载部件上的静电潜像用包括至少包含粘合剂树脂和磁性氧化铁的磁性调色剂颗粒的磁性调色剂显影，以及存在于磁性调色剂表面的无机细粉末和导电细粉末 粒子。 磁性调色剂的重均粒径为3-10μm，平均圆形度为0.950〜0.995，含有0.05〜3.00％的分离的含铁颗粒。

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

    公开(公告)号：US06447969B1

    公开(公告)日：2002-09-10

    申请号：US09580409

    申请日：2000-05-30

    申请人： Masanori Ito ,  Tsutomu Kukimoto ,  Tsuyoshi Takiguchi ,  Tatsuhiko Chiba ,  Michihisa Magome ,  Akira Hashimoto ,  Keiji Komoto

    发明人： Masanori Ito ,  Tsutomu Kukimoto ,  Tsuyoshi Takiguchi ,  Tatsuhiko Chiba ,  Michihisa Magome ,  Akira Hashimoto ,  Keiji Komoto

    IPC分类号： G03G9083

    CPC分类号： G03G9/0827 ,  G03G9/0825

    摘要： A toner is formed of toner particles each comprising a binder resin and iron oxide particles dispersed therein. The toner particles are characterized by uniform but non-surface-exposed dispersion of the iron oxide particles within the toner particles as represented by (i) a carbon content (A) and an iron content (B) giving a ratio B/A

    摘要翻译： 调色剂由分别包含粘合剂树脂和氧化铁颗粒的调色剂颗粒形成。 调色剂颗粒的特征在于由（i）碳含量（A）和铁含量（B）表示的氧化铁颗粒在调色剂颗粒内的均匀但非表面暴露的分散体，其比例B / A <0.001 在通过X射线光电子能谱测定的调色剂颗粒的表面上，（ii）至少0.970的平均圆形度，和（iii）满足D / C <0.02的调色剂颗粒的至少50％，其中C表示 基于通过透射电子显微镜（TEM）观察到的调色剂颗粒的截面图，每个调色剂颗粒的投影面积当量圆直径和D表示氧化铁颗粒从调色剂颗粒表面的最小距离。

    Magnetic toner and image-forming method making use of the same
    6.
    发明授权
    Magnetic toner and image-forming method making use of the same 有权
    使用磁性调色剂和成像方法

    公开(公告)号：US06596452B2

    公开(公告)日：2003-07-22

    申请号：US09788399

    申请日：2001-02-21

    申请人： Michihisa Magome ,  Tsutomu Kukimoto ,  Tsuyoshi Takiguchi ,  Tatsuhiko Chiba ,  Akira Hashimoto ,  Keiji Komoto

    发明人： Michihisa Magome ,  Tsutomu Kukimoto ,  Tsuyoshi Takiguchi ,  Tatsuhiko Chiba ,  Akira Hashimoto ,  Keiji Komoto

    IPC分类号： G03G9083

    CPC分类号： G03G9/0833 ,  G03G9/0827 ,  G03G9/0835 ,  G03G9/0836 ,  G03G9/0837 ,  G03G9/0838 ,  G03G9/08708 ,  G03G9/08793 ,  G03G9/08797 ,  Y10S430/102

    摘要： A magnetic toner comprising magnetic toner particles containing at least a binder resin, a magnetic material containing a magnetic iron oxide, and a release agent. The magnetic toner has a weight-average particle diameter of from 3 &mgr;m to 10 &mgr;m, a magnetization intensity (saturation magnetization) of from 10 Am2/kg to 50 Am2/kg (emu/g) under application of a magnetic field of 79.6 kA/m (1,000 oersteds), an average circularity of 0.970 or more, a ratio of weight-average particle diameter to number-average particle diameter, of 1.40 or less, iron and an iron compound which stand liberated from the magnetic toner particles at a liberation percentage of from 0.05% to 3.00%, and a resin component having a tetrahydrofuran-insoluble matter in an amount of from 3% by weight to 60% by weight. Also disclosed is an image-forming method making use of the magnetic toner.

    摘要翻译： 包含至少含有粘合剂树脂的磁性调色剂颗粒，含有磁性氧化铁的磁性材料和脱模剂的磁性调色剂。 磁性调色剂的重均粒径为3μm〜10μm，在施加79.6kA的磁场下，磁化强度（饱和磁化强度）为10Am 2 / kg〜50Am 2 / kg（emu / g） / m（1,000奥斯特），平均圆形度为0.970以上，重均粒径与数均粒径的比值为1.40以下，铁和铁化合物在磁性调色剂颗粒中释放出来 释放百分比为0.05％〜3.00％，以及四氢呋喃不溶物质量为3重量％〜60重量％的树脂成分。 还公开了利用磁性调色剂的图像形成方法。

    Method for forming image
    7.
    发明授权
    Method for forming image 失效
    图像形成方法

    公开(公告)号：US06879793B2

    公开(公告)日：2005-04-12

    申请号：US10463421

    申请日：2003-06-18

    申请人： Tatsuhiko Chiba ,  Michihisa Magome ,  Keiji Komoto ,  Kaori Hiratsuka ,  Takeshi Kaburagi

    发明人： Tatsuhiko Chiba ,  Michihisa Magome ,  Keiji Komoto ,  Kaori Hiratsuka ,  Takeshi Kaburagi

    IPC分类号： G03G9/08 ,  G03G9/083 ,  G03G15/02 ,  G03G15/06 ,  G03G15/08 ,  G03G15/09 ,  G03G15/30 ,  G03G21/00 ,  G03G21/10

    CPC分类号： G03G21/0064 ,  G03G2215/0609

    摘要： To provide a method for forming images in which the image bearing member and the toner carrying member are arranged with a gap of 100 μm to 250 μm, and the equation (1) and equation (2) are satisfied. (1) 22≦(the frequency of the alternating current component of the alternating electric field/the peripheral speed of the toner carrying member)×the maximum electric field intensity at the time of developing≦1.20. (2) 8≦(the frequency of the alternating current component of the alternating electric field/the peripheral speed of toner carrying member)×(the fluidity index of Carr/the floodability index of Carr)≦50. According to the method for forming images of the present invention, it is possible to obtain a high quality image without generating fog and light shielding while attaining a uniform halftone with a high image density even over long-term.

    摘要翻译： 为了提供形成图像的方法，其中图像承载部件和调色剂承载部件布置有100μm到250μm的间隙，并且满足等式（1）和等式（2）。 （1）22 <=（交变电场的交流分量的频率/调色剂承载部件的圆周速度）×显影时的最大电场强度<= 1.20。 （2）8 <=（交变电场的交流分量的频率/调色剂承载构件的圆周速度）×（Carr的流动性指数/ Carr的可淹性指数）<= 50。 根据本发明的形成图像的方法，即使长期地获得具有高图像浓度的均匀的半色调，也可以获得高质量的图像而不产生雾和光屏蔽。

    Dry toner, dry toner production process, and image forming method
    9.
    发明授权
    Dry toner, dry toner production process, and image forming method 失效
    干粉，干粉生产工艺和成像方法

    公开(公告)号：US06635398B1

    公开(公告)日：2003-10-21

    申请号：US09695079

    申请日：2000-10-25

    申请人： Keiji Komoto ,  Tsutomu Kukimoto ,  Tatsuhiko Chiba ,  Akira Hashimoto

    发明人： Keiji Komoto ,  Tsutomu Kukimoto ,  Tatsuhiko Chiba ,  Akira Hashimoto

    IPC分类号： G03G9087

    CPC分类号： G03G9/0821 ,  G03G9/0827 ,  G03G9/08737

    摘要： A dry toner has toner particles containing at least a binder resin, a colorant and a wax component and an external additive. The binder resin contains a component derived from a monomer selected from butadiene, isoprene and chloroprene. The toner has a main Tg from 40° C. to 70° C. When specific surface area measured by the BET method in an environment of 23° C. atmospheric temperature and 65% relative humidity is represented by A (m2/g) and specific surface area measured by the BET method in an environment of 50° C. atmospheric temperature and 3% relative humidity is represented by B (m2/g), the toner satisfies the following relationship: 0.8≦A≦4.0, 0.80≦(B/A)≦1.05. The toner has a circle-corresponding number-average particle diameter D1 from 2 to 10 &mgr;m, an average circularity from 0.950 to 0.995 and a circularity standard deviation less than 0.040. The toner has a main-peak molecular weight from 2,000 to 100,000 and contains a THF-insoluble matter from 5 to 60% by weight.

    摘要翻译： 干燥调色剂具有至少含有粘合剂树脂，着色剂和蜡组分的调色剂颗粒和外部添加剂。 粘合剂树脂含有源自选自丁二烯，异戊二烯和氯丁二烯的单体的成分。 调色剂的主要Tg为40℃至70℃。当在23℃环境温度和65％相对湿度的环境中通过BET法测得的比表面积由A（m 2 / g）和通过BET法在50℃环境温度和3％相对湿度的环境中测量的比表面积由B（m 2 / g）表示，调色剂满足以下关系：0.8 <= A <= 4.0,0.80 <=（B / A）<= 1.05。 调色剂具有2至10μm的圆对应的数均粒径D1，0.950至0.995的平均圆形度和小于0.040的圆形度标准偏差。 调色剂的主峰分子量为2,000〜100,000，含有5〜60重量％的THF不溶物。