公开(公告)号：US06548218B1

公开(公告)日：2003-04-15

申请号：US08492445

申请日：1995-06-19

申请人： Tsutomu Kukimoto ,  Kenji Okado ,  Shuichi Aita ,  Tsuyoshi Takiguchi

发明人： Tsutomu Kukimoto ,  Kenji Okado ,  Shuichi Aita ,  Tsuyoshi Takiguchi

IPC分类号： G03G1302

CPC分类号： G03G15/0241 ,  G03G2215/022 ,  G03G2221/183 ,  Y10S430/102

摘要： Magnetic particles for charging means disposed in contact with an electrophotographic photosensitive member for charging the electrophotographic photosensitive member based on a voltage applied thereto are provided as particles of a ferrite component represented by the following formula (1): (Fe2O3)X(A)Y(B)Z  (1), wherein A denotes at least one metal oxide component selected from the group consisting of Li2O, MnO and MgO, B denotes at least one metal oxide component different from A; X, Y and Z denote numbers representing mol ratios and satisfying the following conditions: 0.2

摘要翻译： 作为与电子照相感光构件相接触的用于充电电子照相感光构件的用于充电装置的磁性颗粒被提供为由下式（1）表示的铁氧体组分的颗粒：其中A表示至少一种金属氧化物 选自Li2O，MnO和MgO的组分，B表示与A不同的至少一种金属氧化物组分; X，Y和Z表示摩尔比的数字，满足下列条件：0.2

公开(公告)号：US6077636A

公开(公告)日：2000-06-20

申请号：US235397

申请日：1999-01-22

申请人： Yuji Moriki ,  Kenji Okado ,  Hiroaki Kawakami ,  Shinya Yachi ,  Michihisa Magome

发明人： Yuji Moriki ,  Kenji Okado ,  Hiroaki Kawakami ,  Shinya Yachi ,  Michihisa Magome

IPC分类号： G03G9/08 ,  G03G9/097 ,  G03G13/01 ,  G03G15/22

CPC分类号： G03G9/0806 ,  G03G9/0819 ,  G03G9/0827 ,  G03G9/09708

摘要： A toner is comprised of toner particles containing at least a binder resin and a colorant, and an external additive fine powder. The toner particles have a specific circularity distribution and a specific particle size distribution. The external additive fine powder has an inorganic fine powder having as primary particles a specific number-average particle length, and a non-spherical inorganic fine powder formed by coalescence of particles and having a specific shape factor and a specific number-average particle length.

摘要翻译： 调色剂由至少含有粘合剂树脂和着色剂的调色剂颗粒和外部添加剂细粉末组成。 调色剂颗粒具有特定的圆形度分布和特定的粒度分布。 外部添加剂微粉末具有作为一次粒子的无机细粉末，具有特定的数均粒径，以及通过粒子的聚结而形成的具有特定形状因子和特定的数均粒子长度的非球形的无机细粉末。

公开(公告)号：US6077635A

公开(公告)日：2000-06-20

申请号：US99527

申请日：1998-06-18

申请人： Kenji Okado ,  Ryoichi Fujita ,  Wakashi Iida ,  Yuji Moriki ,  Kazumi Yoshizaki ,  Michihisa Magome

发明人： Kenji Okado ,  Ryoichi Fujita ,  Wakashi Iida ,  Yuji Moriki ,  Kazumi Yoshizaki ,  Michihisa Magome

IPC分类号： G03G9/08 ,  G03G9/097 ,  G03G13/01

CPC分类号： G03G9/0827 ,  G03G9/0819 ,  G03G9/09708

摘要： A toner is disclosed which has toner particles and an external additive. The toner has (a) in circularity distribution of particles measured with a flow type particle image analyzer, an average circularity of from 0.920 to 0.995, containing particles with a circularity of less than 0.950 in an amount of from 2% by number to 40% by number; and (b) a weight-average particle diameter of from 2.0 .mu.m to 9.0 .mu.m as measured by Coulter method. The external additive has, on the toner particles, at least (i) an inorganic fine powder (A) present in the state of primary particles or secondary particles and having an average particle length of from 10 m.mu.m to 400 m.mu.m and a shape factor SF-1 of from 100 to 130 and (ii) a non-spherical inorganic fine powder (B) formed by coalescence of a plurality of particles and having a shape factor SF-1 of greater than 150. Also, a two-component developer and an image forming method, using the toner, are disclosed.

摘要翻译： 公开了一种具有调色剂颗粒和外部添加剂的调色剂。 调色剂具有（a）以流动型颗粒图像分析仪测量的颗粒的圆形分布，平均圆形度为0.920至0.995，其中圆形度小于0.950的颗粒的量为2％至40％ 按数量 （b）通过Coulter法测定的重均粒径为2.0μm〜9.0μm。 外部添加剂在调色剂颗粒上至少存在（i）以一次粒子或二次粒子状态存在的平均粒子长度为10μm〜400μm的无机细粉末（A）， 100〜130的形状因子SF-1和（ii）通过多个粒子的聚结而形成的非球形的无机细粉末（B），并且具有大于150的形状因子SF-1。另外， - 组分显影剂和使用调色剂的图像形成方法。

公开(公告)号：US5700617A

公开(公告)日：1997-12-23

申请号：US727219

申请日：1996-10-08

申请人： Tsuyoshi Takiguchi ,  Kenji Okado ,  Masaaki Taya ,  Ryoichi Fujita ,  Makoto Kanbayashi ,  Wakashi Iida ,  Tetsuya Ida

发明人： Tsuyoshi Takiguchi ,  Kenji Okado ,  Masaaki Taya ,  Ryoichi Fujita ,  Makoto Kanbayashi ,  Wakashi Iida ,  Tetsuya Ida

IPC分类号： G03G9/097 ,  H01B1/00 ,  H01B1/06

CPC分类号： G03G9/09733 ,  G03G9/09708 ,  G03G9/09783

摘要： A toner for developing an electrostatic image is formed from toner particles containing a binder resin, a colorant, and a charge-controlling agent. The charge-controlling agent comprises an aromatic oxycarboxylic acid, a metal compound of the aromatic oxycarboxylic acid, and an inorganic compound formed from an inorganic anion and an inorganic cation. The aromatic oxycarboxylic acid, the metal compound of the aromatic carboxylic acid and the inorganic anion are contained in proportions of A (wt. %), B (wt. %) and C (ppm), respectively, satisfying the following conditions: 1/99.ltoreq.A/B.ltoreq.20/80, and 10.sup.2 .ltoreq.C. Because of the inclusion of an inorganic compound providing a sufficient amount of inorganic anion, the charge-controlling agent shows a stable charge-controlling characteristic, and the resultant toner exhibits a stable developing performance and transferability in continuous image formation in various environmental conditions.

摘要翻译： 用于显影静电图像的调色剂由含有粘合剂树脂，着色剂和电荷控制剂的调色剂颗粒形成。 电荷控制剂包括芳族羟基羧酸，芳族羟基羧酸的金属化合物和由无机阴离子和无机阳离子形成的无机化合物。 芳族羟基羧酸，芳族羧酸的金属化合物和无机阴离子分别以A（重量％），B（重量％）和C（ppm）的比例包含，满足以下条件：1 / 99 。 由于含有提供足够量的无机阴离子的无机化合物，电荷控制剂显示出稳定的电荷控制特性，并且所得调色剂在各种环境条件下表现出稳定的连续成像的显影性能和转印性。

公开(公告)号：US5149610A

公开(公告)日：1992-09-22

申请号：US847763

申请日：1992-03-04

申请人： Hiroyuki Kobayashi ,  Mitsuru Uchida ,  Kenji Okado

发明人： Hiroyuki Kobayashi ,  Mitsuru Uchida ,  Kenji Okado

IPC分类号： G03G9/08 ,  G03G9/09 ,  G03G13/01

CPC分类号： G03G13/013 ,  G03G9/08 ,  G03G9/09

摘要： Four color toners of yellow, magenta, cyan and black, and four two-component developers containing the four color toners respectively in combination with a resin-coated ferrite carrier suitable for multi-color electrophotographic copying are provided. Each of the four-color toners is strictly regulated in relation not only to the carrier but also to the other color toners. More specifically, each color toner is strictly controlled with respect to a particle size distribution, freeness from agglomeration, melting characteristics including heat-absorption peaks and apparent viscosity on melting, chromaticity, triboelectric chargeability and optical toner concentration detection characteristic. Because of the strict regulation of these various parameters, the resultant multi-color toner or developer system shows excellent performances at every stage of multi-color electrophotography including development, transfer and fixing (color-mixing) for a long period of successive copying.

摘要翻译： 提供了黄色，品红色，青色和黑色的四色调色剂和分别与适用于多色电子照相复印的树脂涂覆的铁氧体载体组合的四色调色剂的四种双组分显影剂。 四色调色剂中的每一种都不仅与载体相关，而且与其他颜色调色剂有关。 更具体地说，每种彩色调色剂都是相对于粒度分布，结块游离度，包括热吸收峰的熔融特性和熔融时的表观粘度，色度，摩擦带电性和光调色剂浓度检测特性来严格控制的。 由于这些各种参数的严格调节，所得到的多色调色剂或显影剂系统在多色电子照相术的每个阶段显示出优异的性能，包括长时间连续复制的显影，转印和定影（色混合）。

公开(公告)号：US4626487A

公开(公告)日：1986-12-02

申请号：US634060

申请日：1984-07-25

申请人： Yasuo Mitsuhashi ,  Masaki Uchiyama ,  Kazunori Murakawa ,  Kenji Okado

发明人： Yasuo Mitsuhashi ,  Masaki Uchiyama ,  Kazunori Murakawa ,  Kenji Okado

IPC分类号： G03G9/097 ,  G03G13/09 ,  G03G9/00 ,  G03G9/14 ,  G03G13/06

CPC分类号： G03G13/09 ,  G03G9/09708

摘要： A developer comprising colored resinous particles and inorganic fine particles having a BET specific surface area of 0.2 to 30 m.sup.2 /g as measured by nitrogen adsorption. The inorganic fine particles have an action of promoting removal of paper powder and other adherents during cleaning of the latent image-bearing member without sticking onto the latent image-bearing member. Accordingly, the developer containing the inorganic fine particles can give good images even after successive copying operation for a long term.

摘要翻译： 包含着色树脂颗粒和通过氮吸附测量的BET比表面积为0.2-30m2 / g的无机细颗粒的显影剂。 无机细颗粒在没有粘附在潜像承载部件上的同时具有促进除去潜像承载部件的清洁期间的纸粉等附着物的作用。 因此，即使长期连续复印操作，含有无机微粒的显影剂也能得到良好的图像。

公开(公告)号：US07070898B2

公开(公告)日：2006-07-04

申请号：US10726503

申请日：2003-12-04

申请人： Tatsuya Nakamura ,  Kenji Okado ,  Akira Hashimoto ,  Keiji Komoto

发明人： Tatsuya Nakamura ,  Kenji Okado ,  Akira Hashimoto ,  Keiji Komoto

IPC分类号： G03G9/08

CPC分类号： G03G9/08 ,  G03G9/087

摘要： A toner having a favorable fixability, excelling in charge stability, and capable of forming a image of retaining a high image density and a high resolution in long-term use is provided. That is, the toner of the present invention is a toner obtained by polymerizing a polymerizable monomer composition comprising a polymerizable monomer and a colorant, in which the polymerizable monomer composition is polymerized using a polymerization initiator comprising a redox initiator which includes an organic peroxide with a 10-hour half-life temperature of 86° C. or higher and an reducing agent; the toner has a ratio of a weight-average particle diameter to a number-average particle diameter of 1.40 or less; and the toner has top of a main-peak in a molecular weight range of 5,000 to 50,000 in a molecular weight distribution measured using GPC of the THF-soluble part thereof, including t-butanol with a content of 0.1 to 1,000 ppm.

摘要翻译： 提供了具有良好的定影性，电荷稳定性优异并且能够形成长期使用中保持高图像浓度和高分辨率的图像的调色剂。 也就是说，本发明的调色剂是通过使包含可聚合单体和着色剂的可聚合单体组合物聚合而获得的调色剂，其中使用包含有机过氧化物的氧化还原引发剂的聚合引发剂聚合可聚合单体组合物， 10小时半衰期为86℃以上的还原剂; 调色剂的重均粒径与数均粒径的比值为1.40以下; 并且调色剂在其THF可溶部分的GPC测量的分子量分布中具有5000至50,000的分子量范围内的主峰顶部，包括含量为0.1至1,000ppm的叔丁醇。

公开(公告)号：US06855469B2

公开(公告)日：2005-02-15

申请号：US10274898

申请日：2002-10-22

申请人： Naotaka Ikeda ,  Kenji Okado ,  Yushi Mikuriya ,  Shinya Yachi ,  Kazumi Yoshizaki ,  Katsuyuki Nonaka

发明人： Naotaka Ikeda ,  Kenji Okado ,  Yushi Mikuriya ,  Shinya Yachi ,  Kazumi Yoshizaki ,  Katsuyuki Nonaka

IPC分类号： G03G9/08 ,  G03G9/087 ,  G03G9/09 ,  G03G9/10 ,  G03G9/107 ,  G03G9/113 ,  G03G13/01 ,  G03G15/01

CPC分类号： G03G13/013 ,  G03G9/10 ,  G03G9/107 ,  G03G9/1135 ,  G03G2215/0129 ,  G03G2215/0177

摘要： In a full-color image-forming method having at least a charging step, a latent-image-forming step, a developing step of developing an electrostatic latent image by the use of a developer; a transfer step, and a fixing step, the developer comprises a plurality of color developers and a black developer. The color developers are each a two-component developer for full-color image formation which has i) a color toner having color toner particles containing at least a binder resin, a colorant and a wax and ii) a carrier for the color developer. The black developer is a two-component developer for full-color image formation which has i) a black toner having black toner particles containing at least a binder resin, carbon black and a wax and ii) a carrier for the black developer. The carrier for the black developer has a larger absolute value of charge quantity when the same toner is used, than the respective carriers for the color developers.

摘要翻译： 在具有至少充电步骤，潜像形成步骤，通过使用显影剂显影静电潜像的显影步骤的全色图像形成方法中; 转印步骤和定影步骤，显影剂包括多个显色剂和黑色显影剂。 显色剂各自是用于全色图像形成的双组分显影剂，其具有i）具有至少含有粘合剂树脂，着色剂和蜡的彩色调色剂颗粒的彩色调色剂和ii）用于显色剂的载体。 黑色显影剂是用于全色图像形成的双组分显影剂，其具有i）黑色调色剂，其具有至少含有粘合剂树脂，炭黑和蜡的黑色调色剂颗粒，以及ii）用于黑色显影剂的载体。 黑色显影剂的载体与使用相同的调色剂的电荷量的绝对值大于彩色显影剂的各个载体。

公开(公告)号：US06641967B2

公开(公告)日：2003-11-04

申请号：US10107053

申请日：2002-03-28

申请人： Tsuyoshi Takiguchi ,  Kenji Okado ,  Tetsuya Ida

发明人： Tsuyoshi Takiguchi ,  Kenji Okado ,  Tetsuya Ida

IPC分类号： G03G1308

CPC分类号： G03G9/107 ,  G03G9/0821 ,  G03G9/08755

摘要： A carrier for electrophotography and a two component type developer using the carrier. The carrier is composed of magnetic particles of a magnetic ferrite component represented by Formula: (Fe2O3)X(MnO)Y(A)Z. An image forming method is also disclosed which uses the two component type developer.

公开(公告)号：US06312862B1

公开(公告)日：2001-11-06

申请号：US09434401

申请日：1999-11-05

申请人： Kenji Okado ,  Ryoichi Fujita ,  Yushi Mikuriya ,  Shinya Yachi ,  Kazumi Yoshizaki

发明人： Kenji Okado ,  Ryoichi Fujita ,  Yushi Mikuriya ,  Shinya Yachi ,  Kazumi Yoshizaki

IPC分类号： G03G9113

CPC分类号： G03G9/097 ,  G03G9/0819 ,  G03G9/10 ,  G03G9/107 ,  G03G9/113

摘要： A two-component type developer has a negatively chargeable toner having toner particles and an external additive and a magnetic-fine-particle-dispersed resin carrier. The magnetic-fine-particle-dispersed resin carrier has composite particles containing at least inorganic compound particles and a binder resin. The inorganic compound particles have been surface-treated with a lipophilic-treating agent having at least one type of functional group (A) selected from the group consisting of an epoxy group, an amino group, a mercapto group, an organic acid group, an ester group, a ketone group, an alkyl halide group and an aldehyde group, or a mixture of the agent. The composite particles have been surface-coated with at least one type of coupling agent having at least one type of functional group (B) different from the functional group (A) the lipophilic-treating agent. The functional group (B) the coupling agent has being a functional group or groups selected from the group consisting of an epoxy group, an amino group and a mercapto group. The negatively chargeable toner has a weight-average particle diameter of from 3 &mgr;m to 9 &mgr;m.

摘要翻译： 双组分型显影剂具有带负电荷的调色剂，其具有调色剂颗粒和外部添加剂和磁性微粒分散树脂载体。 磁性粒子分散树脂载体具有至少含有无机化合物粒子和粘合剂树脂的复合粒子。 无机化合物颗粒已经用具有至少一种选自环氧基，氨基，巯基，有机酸基，官能团（A）中的至少一种官能团（A）的亲脂性处理剂进行表面处理 酯基，酮基，烷基卤基和醛基，或者该试剂的混合物。 复合颗粒已经用至少一种类型的具有至少一种类型的官能团（B）的不同于亲脂性处理剂的官能团（A）的偶联剂进行表面涂覆。 官能团（B）偶联剂是选自环氧基，氨基和巯基的官能团或基团。 负带电性调色剂的重均粒径为3〜9μm。