公开(公告)号：US07024138B2

公开(公告)日：2006-04-04

申请号：US10765033

申请日：2004-01-28

申请人： Naotaka Ikeda ,  Kenji Okado ,  Kazumi Yoshizaki ,  Hironori Minagawa

发明人： Naotaka Ikeda ,  Kenji Okado ,  Kazumi Yoshizaki ,  Hironori Minagawa

IPC分类号： G03G15/01

CPC分类号： G03G15/08 ,  G03G15/01 ,  G03G15/0865 ,  G03G2215/0607 ,  G03G2215/066

摘要： In an image forming apparatus having at least one single electrostatic latent image bearing member and a plurality of image forming units each having a replenishing developer cartridge and a developing assembly, at least one of the image forming units is a special-color image forming unit having a special-color replenishing developer cartridge containing a special-color replenishing developer, and at least one of the other image forming unit is a non-special-color image forming unit having a non-special-color replenishing developer cartridge containing a non-special-color replenishing developer. The special-color replenishing developer cartridge has a volume larger than the volume of the non-special-color replenishing developer cartridge, and the special-color replenishing developer contains a toner and a carrier.

摘要翻译： 在具有至少一个单一静电潜像承载部件和多个图像形成单元的图像形成装置中，每个图像形成单元均具有补充显影剂盒和显影组件，至少一个图像形成单元是特殊颜色图像形成单元，其具有 包含特殊颜色补充显影剂的特殊颜色补充显影剂盒，并且至少其中一个图像形成单元是非特殊颜色图像形成单元，其具有包含非特殊颜色补充显影剂盒的非特殊颜色补充显影剂盒 彩色补充开发者。 特殊颜色补充显影剂盒的体积大于非特殊颜色补充显影剂盒的体积，并且特殊颜色补充显影剂含有调色剂和载体。

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：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：US5853938A

公开(公告)日：1998-12-29

申请号：US183782

申请日：1994-01-21

申请人： Akihiko Nakazawa ,  Kenji Okado

发明人： Akihiko Nakazawa ,  Kenji Okado

IPC分类号： C01G23/07 ,  C09C1/36 ,  G03G9/097

CPC分类号： B82Y30/00 ,  C01G23/07 ,  C09C1/3607 ,  G03G9/097 ,  G03G9/09708 ,  C01P2002/02 ,  C01P2004/32 ,  C01P2004/50 ,  C01P2004/51 ,  C01P2004/62 ,  C01P2004/64 ,  C01P2006/11 ,  C01P2006/12 ,  C01P2006/32 ,  C01P2006/40 ,  C01P2006/60 ,  C01P2006/80 ,  C01P2006/90

摘要： A toner for developing an electrostatic image has colorant-containing resin particles and amorphous fine titanium oxide particles comprising primary particles having an average particle diameter of from 1 m.mu. to 200 m.mu..

摘要翻译： 用于显影静电图像的调色剂具有着色剂树脂颗粒和包含平均粒径为1μm至200μm的一次颗粒的无定形细小氧化钛颗粒。

公开(公告)号：US5795693A

公开(公告)日：1998-08-18

申请号：US908624

申请日：1997-08-08

申请人： Kenji Okado ,  Tsuyoshi Takiguchi ,  Tetsuya Ida

发明人： Kenji Okado ,  Tsuyoshi Takiguchi ,  Tetsuya Ida

IPC分类号： G03G9/083 ,  G03G9/107 ,  G03G9/113 ,  G03G9/10

CPC分类号： G03G9/0833 ,  G03G9/0834 ,  G03G9/107 ,  G03G9/1136 ,  G03G9/1137

摘要： A carrier for electrophotography is constituted by magnetic carrier core particles and a resin coating layer coating the magnetic carrier core particles. The carrier core particles contain a magnetic ferrite component represented by the following formula (I): (Fe.sub.2 O.sub.3).sub.x (A).sub.y (B).sub.z (I), wherein A denotes a member selected from the group consisting of MgO, AgO and mixtures thereof; B denotes a member selected from the group consisting of Li.sub.2 O, MnO, CaO, SrO, Al.sub.2 O.sub.3, SiO.sub.2 and mixtures thereof; and x, y and z are numbers representing weight ratios and satisfying the relation of: 0.2.ltoreq.x.ltoreq.0.95, 0.005.ltoreq.y.ltoreq.0.3, 0

摘要翻译： 用于电子照相的载体由磁性载体芯颗粒和涂覆磁性载体芯颗粒的树脂涂层构成。 载体芯颗粒包含由下式（I）表示的磁性铁氧体组分:( Fe 2 O 3）x（A）y（B）z（I），其中A表示选自MgO，AgO和混合物 的; B表示选自Li2O，MnO，CaO，SrO，Al2O3，SiO2及其混合物的成员; 并且x，y和z是表示重量比的数字，并且满足以下关系：0.2≤x≤0.95,0.003≤y≤0.3,0≤z≤0.795，x + y + z

公开(公告)号：US5747213A

公开(公告)日：1998-05-05

申请号：US654691

申请日：1996-05-29

申请人： Kenji Okado ,  Ryuichiro Maeyama ,  Kouji Inaba

发明人： Kenji Okado ,  Ryuichiro Maeyama ,  Kouji Inaba

IPC分类号： G03G9/087 ,  G03G13/20

CPC分类号： G03G13/20 ,  G03G9/08782 ,  G03G9/08797 ,  G03G2215/2074

摘要： The present invention provides an image forming method including the steps of: forming an electrostatic latent image on a latent image holding member; developing the electrostatic latent image by using a color toner to form a toner image; transferring the toner image onto a recording material; and fixing the toner image to the recording material by a heat fixing device including a heating member in contact with the toner image. In the method, the color toner contains at least a binder resin, a colorant and wax, the wax having a molecular weight distribution measured by GPC, which has a ratio of the weight average molecular weight (Mw) to the number average molecular weight (Mn) of 1.45 or less, and a solubility parameter (SP value) of 8.4 to 10.5. If the contact angles between the wax and the heating member at 100.degree. C. and 200.degree. C. are A and B, respectively, the contact angles A and B satisfy the following relations: 60.degree..ltoreq.A.ltoreq.80.degree. 10.degree..gtoreq.B-A.gtoreq.3.degree..

摘要翻译： 本发明提供一种图像形成方法，包括以下步骤：在潜像保持部件上形成静电潜像; 通过使用彩色调色剂显影静电潜像以形成调色剂图像; 将调色剂图像转印到记录材料上; 以及通过包括与调色剂图像接触的加热构件的热定影装置将调色剂图像定影到记录材料。 在该方法中，彩色调色剂至少含有粘合剂树脂，着色剂和蜡，蜡具有通过GPC测量的分子量分布，其具有重均分子量（Mw）与数均分子量（Mw）的比值 Mn）为1.45以下，溶解度参数（SP值）为8.4〜10.5。 如果蜡和加热构件在100℃和200℃下的接触角分别为A和B，则接触角A和B满足以下关系：60°≤A<80° 10°/ = BA> / = 3°。