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。

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。

公开(公告)号：US06653035B2

公开(公告)日：2003-11-25

申请号：US10202903

申请日：2002-07-26

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

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

IPC分类号： G03G9083

CPC分类号： G03G9/0834 ,  G03G9/0819 ,  G03G9/0825 ,  G03G9/0827 ,  G03G9/0836 ,  G03G9/0837 ,  G03G9/0838 ,  G03G9/08711 ,  G03G9/08722 ,  G03G9/08771 ,  G03G9/08782 ,  G03G9/08791

摘要： A magnetic toner exhibiting stable performances under various environmental conditions is formed of toner particles each comprising at least a binder resin and iron oxide dispersed therein. Relative to the dry specific gravity (A) of the magnetic toner, the magnetic toner is characterized by a specific gravity distribution of toner particle fractions obtainable through wet sedimentation and including: at most 15 wt. % of a fraction having a specific gravity of above (A)×1.000 and at most (A)×1.025, 0.1-20 wt. % of a fraction having a specific gravity of above (A)×0.975 and at most (A)×1.000, at least 30 wt. % of a fraction having a specific gravity of above (A)×0.950 and at most (A)×0.975, 0.1-20 wt. % of a fraction having a specific gravity of above (A)×0.925 and at most (A)×0.950, and at most 15 wt. % of a fraction having a specific gravity of above (A)×0.900 and at most (A)×0.925.

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。

公开(公告)号：US06465144B2

公开(公告)日：2002-10-15

申请号：US09800655

申请日：2001-03-08

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

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

IPC分类号： G03G9083

CPC分类号： G03G9/08708 ,  G03G9/0819 ,  G03G9/0825 ,  G03G9/0827 ,  G03G9/0833 ,  G03G9/0835 ,  G03G9/0836 ,  G03G9/0837 ,  G03G9/0838 ,  G03G9/08782

摘要： A magnetic toner includes: magnetic toner particles each comprising at least a binder resin and magnetic toner, and inorganic fine powder. The magnetic toner has an average circularity of at least 0.970, and a magnetization of 10-50 Am2/kg at a magnetic field of 79.6 kA/m. The magnetic powder comprises at least magnetic iron oxide. The magnetic toner particles retain carbon in an amount of A and iron in an amount of B at surfaces thereof as measured by X-ray photoelectron spectroscopy, satisfying: B/A

摘要翻译： 磁性调色剂包括：各自至少包含粘合剂树脂和磁性调色剂的磁性调色剂颗粒和无机细粉末。 磁性调色剂在79.6kA / m的磁场下的平均圆形度为至少0.970，磁化强度为10-50Am 2 / kg。 磁粉至少包含磁性氧化铁。 磁性调色剂颗粒通过X射线光电子能谱法测定其表面的B量的A和铁的碳，满足：B / A <0.001。 粘合剂树脂包括由至少包含苯乙烯单体的单体的聚合形成的树脂。 磁性调色剂的残留苯乙烯单体含量小于300ppm，并且包含满足以下关系的至少50％的调色剂颗粒：D / C <= 0.02，其中C表示磁性的体积平均粒径 调色剂，D表示磁性调色剂颗粒的表面与磁性调色剂颗粒中所含的磁性粉末颗粒之间的最小距离。 由于上述特征，即使在无清洁器模式的图像形成系统中，磁性调色剂也能表现出良好的电摄影性能，包括极佳的带电性和少量的转印残留调色剂。

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。

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。

公开(公告)号：US06544708B2

公开(公告)日：2003-04-08

申请号：US09817340

申请日：2001-03-27

申请人： Keiji Komoto ,  Hiroaki Kawakami ,  Tatsuhiko Chiba ,  Atsuyoshi Abe ,  Yuji Moriki ,  Michihisa Magome ,  Satoshi Handa ,  Kiyokazu Suzuki

发明人： Keiji Komoto ,  Hiroaki Kawakami ,  Tatsuhiko Chiba ,  Atsuyoshi Abe ,  Yuji Moriki ,  Michihisa Magome ,  Satoshi Handa ,  Kiyokazu Suzuki

IPC分类号： G03G1320

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

摘要： An image forming method using a dry toner and exhibiting good quick-start and power economization characteristics is provided. The image forming method includes a heat-pressure fixing step using a rotatable electromagnetic induction heat-generation type heating member. The toner used therein is characterized by a moisture content of at most 3.00 wt. %, and viscoelasticities as represented by a storage modulus at 110° C. of G′ (110° C.) and a storage modulus at 140° C. of G′ (140° C.) satisfying: G′ (110° C.)≦1.00×106 dN/m2, and G′ (140° C.)≧7.00×103 dN/m3.

摘要翻译： 提供了一种使用干式调色剂并具有良好快速启动和功率节省特性的成像方法。 图像形成方法包括使用可旋转电磁感应发热型加热构件的热压固定步骤。 其中使用的调色剂的特征在于含水量最多为3.00重量％。 ％和粘弹性，由G'（110℃）110℃的储能模量和140℃下的储存模量（140℃）满足：和

公开(公告)号：US20050089785A1

公开(公告)日：2005-04-28

申请号：US10938590

申请日：2004-09-13

申请人： Tatsuhiko Chiba ,  Michihisa Magome ,  Eriko Yanase ,  Takeshi Kaburagi

发明人： Tatsuhiko Chiba ,  Michihisa Magome ,  Eriko Yanase ,  Takeshi Kaburagi

IPC分类号： G03G9/08 ,  G03G9/083 ,  G03G9/087

CPC分类号： G03G9/08 ,  G03G9/083 ,  G03G9/087

摘要： The present invention provides a magnetic toner which is hardly influenced by an environment, and with which an image with high quality and excellent resolution can be stably even under low humidity. In the magnetic toner of present invention: I) a ratio of an iron element content to a carbon element content present on the toner particle surface is less than 0.0010; II) 50 number % or more of toner particles satisfy a relationship of D/C≦0.02 (C: projected area diameter of toner particles, D: minimum value for a distance between a magnetic iron oxide fine particle and the toner particle surface); and III) 40-95 number % of toner particles satisfy a structure where 70 number % or more of the magnetic iron oxide fine particles in the respective toner particles are present up to a depth of 0.2 time as far as C from the toner particle surface.

摘要翻译： 本发明提供一种几乎不受环境影响的磁性调色剂，即使在低湿度下也能稳定地进行高品质，高分辨率的图像稳定化。 在本发明的磁性调色剂中：I）调色剂颗粒表面上存在的铁元素含量与碳元素含量之比小于0.0010; II）50数量％以上的调色剂颗粒满足D / C <0.02的关系（C：调色剂颗粒的投影面积直径D：磁性氧化铁微粒与调色剂颗粒表面之间的距离的最小值） ; 和III）40-95％的调色剂颗粒满足其中相应调色剂颗粒中的磁性氧化铁细颗粒的70个数量％或更多到达调色剂颗粒表面的深度为0.2倍的结构 。

公开(公告)号：US07371494B2

公开(公告)日：2008-05-13

申请号：US10938590

申请日：2004-09-13

申请人： Tatsuhiko Chiba ,  Michihisa Magome ,  Eriko Yanase ,  Takeshi Kaburagi

发明人： Tatsuhiko Chiba ,  Michihisa Magome ,  Eriko Yanase ,  Takeshi Kaburagi

IPC分类号： G03G9/083

CPC分类号： G03G9/08 ,  G03G9/083 ,  G03G9/087

摘要： The present invention provides a magnetic toner which is hardly influenced by an environment, and with which an image with high quality and excellent resolution can be stably even under low humidity. In the magnetic toner of present invention: I) a ratio of an iron element content to a carbon element content present on the toner particle surface is less than 0.0010; II) 50 number % or more of toner particles satisfy a relationship of D/C≦0.02 (C: projected area diameter of toner particles, D: minimum value for a distance between a magnetic iron oxide fine particle and the toner particle surface); and III) 40-95 number % of toner particles satisfy a structure where 70 number % or more of the magnetic iron oxide fine particles in the respective toner particles are present up to a depth of 0.2 time as far as C from the toner particle surface.

摘要翻译： 本发明提供一种几乎不受环境影响的磁性调色剂，即使在低湿度下也能稳定地进行高品质，高分辨率的图像稳定化。 在本发明的磁性调色剂中：I）调色剂颗粒表面上存在的铁元素含量与碳元素含量之比小于0.0010; II）50数量％以上的调色剂颗粒满足D / C <0.02的关系（C：调色剂颗粒的投影面积直径D：磁性氧化铁微粒与调色剂颗粒表面之间的距离的最小值） ; 和III）40-95％的调色剂颗粒满足其中相应调色剂颗粒中的磁性氧化铁细颗粒的70个数量％或更多到达调色剂颗粒表面的深度为0.2倍的结构 。