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。

公开(公告)号：US6137977A

公开(公告)日：2000-10-24

申请号：US99136

申请日：1998-06-18

申请人： Kenji Okado ,  Ryoichi Fujita ,  Masanori Shida ,  Kazumi Yoshizaki

发明人： Kenji Okado ,  Ryoichi Fujita ,  Masanori Shida ,  Kazumi Yoshizaki

IPC分类号： G03G9/08 ,  G03G9/097 ,  G03G9/10 ,  G03G9/107 ,  G03G15/08

CPC分类号： G03G9/107 ,  G03G15/0853 ,  G03G9/0819 ,  G03G9/09708 ,  G03G9/10

摘要： In the image forming machine of the invention, a two-component type developer has a spherical magnetic powder dispersion type carrier, which has a weight average particle diameter of from 15 to 60 .mu.m. The external additive is present in the form of particles on the toner particle, and comprises inorganic oxide fine particles A having a shape factor SF-1 of from 100 to 130, and non-spherical inorganic oxide fine particles B, having a shape factor SF-1 larger than 150 and particles B having been obtained by combining a plurality of component particles.

摘要翻译： 在本发明的成像机中，双组分型显影剂具有球形磁粉分散型载体，其重均粒径为15至60μm。 外部添加剂以调色剂颗粒上的颗粒形式存在，并且包含形状因子SF-1为100至130的无机氧化物细颗粒A和具有形状因子SF的非球形无机氧化物细颗粒B -1大于150，颗粒B通过组合多个组分颗粒而获得。

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°。

公开(公告)号：US5256512A

公开(公告)日：1993-10-26

申请号：US813099

申请日：1991-12-24

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 ,  G03G9/097 ,  G03G9/107 ,  G03G9/113

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： 黄色，品红色，青色和黑色的四种颜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种颜色调色剂的四种双组分显影剂分别是四色调色剂 严格规定不仅与承运人有关，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：US06936394B2

公开(公告)日：2005-08-30

申请号：US10081844

申请日：2002-02-25

申请人： Kenji Okado ,  Yushi Mikuriya ,  Kazumi Yoshizaki ,  Naotaka Ikeda

发明人： Kenji Okado ,  Yushi Mikuriya ,  Kazumi Yoshizaki ,  Naotaka Ikeda

IPC分类号： G03G9/08 ,  G03G9/087 ,  G03G9/10 ,  G03G9/107 ,  G03G9/113

CPC分类号： G03G9/1136 ,  G03G9/08782 ,  G03G9/10 ,  G03G9/107

摘要： An electrostatic latent image on an image-bearing member is developed with a two-component developer comprising a toner and a carrier stored in a developer vessel while supplying as required a replenishing developer to the developer vessel. The replenishing developer comprises 1 wt. part of a carrier and 2-50 wt. parts of a toner, wherein the carrier is a magnetic fine particle-dispersed resin carrier comprising at least inorganic compound particles and a carrier binder resin, and the toner has a weight-average particle size of 3 to 10 μm and contains 1 to 40 wt. % of solid wax.

摘要翻译： 图像承载部件上的静电潜像用包含调色剂和存储在显影剂容器中的载体的双组分显影剂显影，同时根据需要向显影剂容器提供补充显影剂。 补充显影剂包含1重量％ 载体的一部分和2-50wt。 调色剂的一部分，其中所述载体是至少包含无机化合物颗粒和载体粘合剂树脂的磁性细颗粒分散树脂载体，并且所述调色剂的重均粒径为3至10μm，并且含有1至40wt 。 ％固体蜡。

公开(公告)号：US06316157B1

公开(公告)日：2001-11-13

申请号：US09610914

申请日：2000-07-05

申请人： Junko Yoshikawa ,  Kenji Okado ,  Masaaki Taya ,  Yushi Mikuriya ,  Kazumi Yoshizaki ,  Yasushi Katsuta ,  Kenichi Nakayama

发明人： Junko Yoshikawa ,  Kenji Okado ,  Masaaki Taya ,  Yushi Mikuriya ,  Kazumi Yoshizaki ,  Yasushi Katsuta ,  Kenichi Nakayama

IPC分类号： G03G9097

CPC分类号： G03G9/09708 ,  G03G9/0821 ,  G03G9/08755 ,  G03G9/09783

摘要： A non-metallic black toner is disclosed. The toner has toner particles containing at least a binder resin, a carbon black and an organometallic compound, and an external additive. The toner particles contain 10 to 200 ppm of at least one kind of alkali metal element and at least one kind of organometallic compound. The toner particles further contain a polyester resin. The non-metallic black toner has a weight-average particle diameter of 4 to 11 &mgr;m, the following loss tangents tan &dgr; shown by dielectric loss factor ∈″/dielectric constant ∈′ at frequencies of 5×104 Hz and 105 Hz: tan &dgr; (5×104 Hz)≦0.0125 tan &dgr; (105 Hz)≦0.0105, a Carr's flowability index of 50 or more, and a Carr's floodability index of 65 or more. Also, an image forming method is disclose using the black toner.

摘要翻译： 公开了一种非金属黑色调色剂。 调色剂具有至少含有粘合剂树脂，炭黑和有机金属化合物的调色剂颗粒和外部添加剂。 调色剂颗粒含有10-200ppm的至少一种碱金属元素和至少一种有机金属化合物。 调色剂颗粒还含有聚酯树脂。 非金属黑色调色剂的重均粒径为4〜11μm，频率为5×104Hz，105Hz时的介电损耗因子∈“/介电常数ε'表示的以下损耗正切tanδ：卡尔的流动性 指数为50以上，卡尔的防洪指数为65以上。 此外，使用黑色调色剂公开了图像形成方法。

公开(公告)号：US5885742A

公开(公告)日：1999-03-23

申请号：US943698

申请日：1997-10-03

申请人： Kenji Okado ,  Toshiyuki Ugai ,  Ryoichi Fujita ,  Tsuyoshi Takiguchi

发明人： Kenji Okado ,  Toshiyuki Ugai ,  Ryoichi Fujita ,  Tsuyoshi Takiguchi

IPC分类号： G03G9/113

CPC分类号： G03G9/1136 ,  G03G9/1139

摘要： A carrier for electrophotography has carrier particles. Each carrier particle has a carrier core and a silicone resin coat layer that covers the carrier core. The carrier particle has silicon atoms and carrier atoms on its surface in the ratio that satisfies the condition of Si/C=0.1 to 2.0 as the number of atoms present on the carrier particle surface as measured by X-ray photoelectron spectroscopy, and from 0.1% by number to 5% by number of metal atoms are present on the carrier particle surface. Additionally, there is a two-component developer for developing electrostatic images which consists of a toner and the carrier. An image forming method in which the two-component developer having the toner and the carrier is transported to a developing zone which is defined by a latent image carried on a latent image bearing member to develop the latent image. A voltage is applied to the developer to direct the toner from the latent image bearing member to a member carrying the developer. A second voltage directs the toner from the developer toward the latent image and a third voltage developer the latent image using the toner of the two-component developer.

摘要翻译： 电子照相用载体具有载体颗粒。 每个载体颗粒具有载体芯和覆盖载体芯的硅树脂涂层。 载体颗粒的表面上具有硅原子和载体原子，其比例满足Si / C = 0.1〜2.0的条件，作为通过X射线光电子能谱测定的载体颗粒表面上存在的原子数，0.1 在载体颗粒表面上存在数量％至5％的金属原子数。 此外，存在用于显影静电图像的双组分显影剂，其由调色剂和载体组成。 一种图像形成方法，其中具有调色剂和载体的双组分显影剂被输送到由承载在潜像承载部件上的潜像所限定的显影区域以显影潜像。 向显影剂施加电压以将调色剂从潜像承载部件引导到携带显影剂的部件上。 第二电压使用双组分显影剂的调色剂将调色剂从显影剂引导到潜像，第三电压显影剂潜像。