公开(公告)号：US5849448A

公开(公告)日：1998-12-15

申请号：US818454

申请日：1997-03-17

申请人： Susumu Yoshino ,  Satoshi Inoue ,  Kaori Ohishi ,  Shinpei Takagi ,  Sakon Takahashi ,  Noriyuki Mizutani

发明人： Susumu Yoshino ,  Satoshi Inoue ,  Kaori Ohishi ,  Shinpei Takagi ,  Sakon Takahashi ,  Noriyuki Mizutani

IPC分类号： G03G9/10 ,  G03G9/113

CPC分类号： G03G9/1135 ,  G03G9/1131 ,  G03G9/1133 ,  G03G9/1139

摘要： The present invention provides a carrier for developer of an electrostatic latent image and related technologies. The carrier is excellent in the ability to impart charge suitably and stably to toner and has a structure durable enough to maintain the ability for a long period of time such that the structure can prevent the toner from being adhered onto the carrier surface for a long period of time. The carrier comprises a core covered with a resin coating layer containing resin particles and an electroconductive fine powder in the form of a dispersion in a matrix resin. The carrier can be produced by a method comprising the steps of preparing a coating solution by placing materials in a solvent which can dissolve the matrix resin, but cannot dissolve the resin particles, dispersing the particles of the resin, applying the solution to a core and removing the solvent. A high-quality image can be formed by use of the developer comprising the carrier and the toner.

摘要翻译： 本发明提供了一种用于静电潜像显影剂和相关技术的载体。 该载体对赋予调色剂的适当且稳定的赋予能力优异，具有耐久性足以维持长时间能力的结构，使得结构能够防止调色剂长时间粘附在载体表面上 的时间。 载体包括被包含树脂颗粒的树脂涂层和基质树脂中分散体形式的导电细粉末覆盖的芯。 载体可以通过以下方法制备：包括以下步骤：通过将材料放置在可溶解基体树脂的溶剂中而不溶解树脂颗粒，分散树脂颗粒，将溶液施加到芯上的步骤来制备涂布溶液， 除去溶剂。 可以通过使用包含载体和调色剂的显影剂来形成高质量的图像。

公开(公告)号：US5821022A

公开(公告)日：1998-10-13

申请号：US858504

申请日：1997-05-19

申请人： Kaori Ohishi ,  Susumu Yoshino ,  Satoshi Inoue ,  Chiaki Suzuki ,  Sueko Sakai

发明人： Kaori Ohishi ,  Susumu Yoshino ,  Satoshi Inoue ,  Chiaki Suzuki ,  Sueko Sakai

IPC分类号： G03G9/08 ,  G03G9/087 ,  G03G9/113 ,  G03G15/08 ,  G03G9/10

CPC分类号： G03G9/1134 ,  G03G9/1131 ,  G03G9/1135

摘要： A carrier for developing an electrostatic latent image comprising a core material coated with a resin layer, wherein the F/N ratio of the surface of the resin layer ranges from 1 to 20. It is desirable that the resin layer include resin particles containing a nitrogen atom, that the average particle diameter of the nitrogen-atom-containing resin be in a range from 0.1 to 2 .mu.m, that the thickness of the resin layer be in a range from 0.1 to 10 .mu.m, that the resin layer include an electroconductive material which is in a condition to be dispersed in the resin layer, that the electroconductive material be made of carbon black, and that the average particle diameter of the carrier for developing an electrostatic latent image be in a range from 30 to 150 .mu.m. The carrier for developing an electrostatic latent image, which is long-lived, provided with a charging capability unchanged over time, and is capable of effectively preventing fogging are provided.

摘要翻译： 一种用于显影静电潜像的载体，包括涂覆有树脂层的芯材料，其中树脂层的表面的F / N比为1至20。希望树脂层包括含有氮的树脂颗粒 原子，含氮原子的树脂的平均粒径为0.1〜2μm，树脂层的厚度为0.1〜10μm，树脂层的厚度为 导电材料为分散在树脂层中的导电材料，导电材料由炭黑制成，静电潜像显影用载体的平均粒径为30〜150μm 。 提供长寿命的静电潜像显影载体，具有随时间不变的充电能力，并且能够有效地防止起雾。

公开(公告)号：US5821023A

公开(公告)日：1998-10-13

申请号：US862701

申请日：1997-05-23

申请人： Yuusaku Shibuya ,  Yasuhiro Oya ,  Haruhide Ishida ,  Susumu Yoshino ,  Hirokazu Hamano ,  Kaori Ohishi ,  Satoshi Inoue ,  Jun Igarashi ,  Chiaki Suzuki ,  Sueko Sakai

发明人： Yuusaku Shibuya ,  Yasuhiro Oya ,  Haruhide Ishida ,  Susumu Yoshino ,  Hirokazu Hamano ,  Kaori Ohishi ,  Satoshi Inoue ,  Jun Igarashi ,  Chiaki Suzuki ,  Sueko Sakai

IPC分类号： G03G9/113 ,  G03G13/08 ,  G03G15/08

CPC分类号： G03G9/113 ,  G03G9/1131

摘要： The present invention provides a long-life carrier for developing an electrostatic latent image to be used in such field of applications as electrostatic photography and electrostatic recording, a developer of an electrostatic latent image utilizing said carrier, a method for forming an image and an image forming apparatus by using said developer. By use of the foregoing qualities, a high-quality image can be obtained.

摘要翻译： 本发明提供一种用于显影静电潜像的长寿命载体，用于静电摄影和静电记录等应用领域，利用所述载体的静电潜像的显影剂，形成图像和图像的方法 通过使用所述显影剂形成装置。 通过使用上述质量，可以获得高质量的图像。

公开(公告)号：US06613491B2

公开(公告)日：2003-09-02

申请号：US10003088

申请日：2001-12-06

申请人： Satoshi Inoue ,  Masahiro Takagi ,  Kaori Ohishi ,  Rieko Kataoka ,  Fusako Kiyono ,  Atsuhiko Eguchi ,  Chiaki Suzuki

发明人： Satoshi Inoue ,  Masahiro Takagi ,  Kaori Ohishi ,  Rieko Kataoka ,  Fusako Kiyono ,  Atsuhiko Eguchi ,  Chiaki Suzuki

IPC分类号： G03G908

CPC分类号： G03G9/09725 ,  G03G9/0827 ,  G03G9/09708 ,  G03G9/09716

摘要： In an electrophotographic developer and a process for forming an image, an electrophotographic toner used therein contains spherical toner parent particles and two or more kinds of inorganic particles having different average particle diameters, at least one kind of the inorganic fine particles being spherical particles having an average primary particle diameter of about 80 to 300 nm, and the inorganic particles containing the spherical particles being attached to the toner parent particles to provide a structure satisfying the following conditions (1) and (2): (1) the spherical particles have a coverage on a surface of the toner parent particles of about 20% or more; and (2) a proportion of the inorganic particles that are separated from the toner parent particles upon dispersing the toner in an aqueous solution is about 35% or less of a total addition amount of the inorganic particles.

摘要翻译： 在电子照相显影剂和形成图像的方法中，其中使用的电子照相调色剂含有球形调色剂母体颗粒和两种或更多种具有不同平均粒径的无机颗粒，至少一种无机细颗粒是具有 平均一次粒径为约80〜300nm，将含有球状粒子的无机粒子附着在调色剂母粒上，得到满足下述条件（1）和（2）的结构：（1）球状粒子具有 调色剂母粒子表面上的覆盖率为约20％以上; 和（2）将调色剂分散在水溶液中时与调色剂母体颗粒分离的无机颗粒的比例为无机颗粒总添加量的约35％以下。

公开(公告)号：US06517985B2

公开(公告)日：2003-02-11

申请号：US10000302

申请日：2001-12-04

申请人： Masahiro Takagi ,  Satoshi Inoue ,  Kaori Ohishi ,  Rieko Kataoka ,  Fusako Kiyono ,  Chiaki Suzuki

发明人： Masahiro Takagi ,  Satoshi Inoue ,  Kaori Ohishi ,  Rieko Kataoka ,  Fusako Kiyono ,  Chiaki Suzuki

IPC分类号： G03G908

CPC分类号： G03G9/0821 ,  G03G9/0819 ,  G03G9/0823 ,  G03G9/0827 ,  G03G9/09 ,  G03G9/09708

摘要： An electrophotographic developer is provided that attains improvement in reliability by improvement in cleaning property and reduction in wear of a photoreceptor in a well-balanced manner without impairing high transfer efficiency and high image quality of a spherical toner. The electrophotographic developer contains a toner and a carrier, the toner containing spherical colored particles having an average shape factor (ML2/A) of about from 100 to 135 and irregular-shaped non-colored particles having a volume average particle diameter of about from 1 to 10 &mgr;m, a charge distribution of the developer having a peak value Q/Ma ascribable to the spherical colored particles and a peak value Q/Mb ascribable to the irregular-shaped non-colored particles, and the peak value Q/Ma and the peak value Q/Mb satisfying both the following formulae (1) and (2): 20 &mgr;C/g≦|Q/Ma|≦85 &mgr;C/g  (1) −0.7 Q/Ma≦Q/Mb≦0.5 Q/Ma  (2).

摘要翻译： 提供了一种电子照相显影剂，其通过改善清洁性能并且以良好平衡的方式降低感光体的磨损而不损害球形调色剂的高转印效率和高图像质量而提高可靠性。 电子照相显影剂含有调色剂和载体，调色剂含有平均形状因子（ML2 / A）为约100至135的球形着色颗粒和体积平均粒径为约1的不规则形状的无色颗粒 至10μm，具有归属于球形着色颗粒的峰值Q / Ma的显影剂的电荷分布和归因于不规则形状的无色颗粒的峰值Q / Mb，峰值Q / Ma和 满足下列公式（1）和（2）的峰值Q / Mb：

公开(公告)号：US5698357A

公开(公告)日：1997-12-16

申请号：US700100

申请日：1996-08-20

申请人： Satoshi Inoue ,  Chiaki Suzuki ,  Kaori Ohishi ,  Hiroshi Nakazawa ,  Yoshifumi Iida

发明人： Satoshi Inoue ,  Chiaki Suzuki ,  Kaori Ohishi ,  Hiroshi Nakazawa ,  Yoshifumi Iida

IPC分类号： G03G9/08 ,  G03G9/097 ,  G03G9/113 ,  G03G15/08 ,  G03G9/10

CPC分类号： G03G9/09716

摘要： A toner for developing an electrostatic latent image, which comprises toner particles and treated titanium oxide fine particles obtained by coating titanium oxide fine particles with 0.1 to 2.0% by weight, in terms of Al.sub.2 O.sub.3, of aluminum or Al.sub.2 O.sub.3 and further subjecting the coated particles to surface treatment with a treating agent.

摘要翻译： 一种用于显影静电潜像的调色剂，其包括通过以Al 2 O 3计的铝或Al 2 O 3以0.1至2.0重量％的氧化钛微粒涂覆氧化钛微粒而得到的调色剂颗粒和经处理的氧化钛微粒， 用处理剂进行表面处理。

公开(公告)号：US6042979A

公开(公告)日：2000-03-28

申请号：US200453

申请日：1998-11-27

申请人： Kaori Ohishi ,  Chiaki Suzuki ,  Masahiro Takagi ,  Satoshi Inoue ,  Tetsuya Taguchi ,  Sueko Sakai

发明人： Kaori Ohishi ,  Chiaki Suzuki ,  Masahiro Takagi ,  Satoshi Inoue ,  Tetsuya Taguchi ,  Sueko Sakai

IPC分类号： G03G9/08 ,  G03G9/087 ,  G03G9/097 ,  G03G9/113 ,  G03G15/08 ,  G03G13/01

CPC分类号： G03G9/09708 ,  G03G9/0827

摘要： The present invention provides toner for an electrostatic latent image developer, said toner being excellent in fluidity, chargeability, developability, transferability, and freedom from fogging on a photoreceptor and contamination of the interior of a developing device. The toner for an electrostatic latent image developer comprises spherical toner particles characterized by a shape index ML.sup.2 /A of less than 125 and has a correlation coefficient between X.sup.2/3 and Y, obtained by linear regression with respect to a straight line which passes through the origin of coordinate axes, of more than 0.6 where X is the light emitting voltage due to the carbon derived from the binder resin of the toner particles and Y is the light emitting voltage due to the element derived from the external additive.

摘要翻译： 本发明提供一种用于静电潜像显影剂的调色剂，所述调色剂具有优异的流动性，带电性，显影性，转印性，并且不受感光体起雾和显影装置内部的污染。 用于静电潜像显影剂的调色剂包括球形调色剂颗粒，其特征在于小于125的形状指数ML2 / A，并且具有通过线性回归获得的X + E，fra 2/3 + EE和Y之间的相关系数 通过坐标轴原点的直线大于0.6，其中X是由于来自调色剂颗粒的粘合剂树脂的碳而导致的发光电压，Y是由于源自调色剂颗粒的元素导致的发光电压 外加剂。

公开(公告)号：US06746810B2

公开(公告)日：2004-06-08

申请号：US10105255

申请日：2002-03-26

申请人： Chiaki Suzuki ,  Masahiro Takagi ,  Atsuhiko Eguchi ,  Satoshi Inoue ,  Sakon Takahashi ,  Masahiro Uchida ,  Rieko Kataoka ,  Hiroyuki Fukuda ,  Fusako Kiyono ,  Eiji Iwasaki

发明人： Chiaki Suzuki ,  Masahiro Takagi ,  Atsuhiko Eguchi ,  Satoshi Inoue ,  Sakon Takahashi ,  Masahiro Uchida ,  Rieko Kataoka ,  Hiroyuki Fukuda ,  Fusako Kiyono ,  Eiji Iwasaki

IPC分类号： G03G2110

CPC分类号： G03G9/10 ,  G03G9/0827 ,  G03G9/09725 ,  G03G9/1075 ,  G03G9/1132 ,  G03G9/1133 ,  G03G9/1134 ,  G03G9/1135

摘要： An image formation method which remarkably extends developer life while providing size reduction and high speed coloring. Also, a replenishing toner and a method of producing the same, and a toner cartridge. In the image formation method, conducting image formation by an image formation apparatus having a plurality of xerography units, the developer apparatus of at least one xerography unit has a developer recovering mechanism appropriately replenishing a replenishing toner composed of a toner and a carrier into the developer apparatus and recovering an excess portion of a developer from the equipment. The above-mentioned replenishing toner has a carrier content in the range of 5 to 40% by weight, the above-mentioned carrier is a carrier coated with a resin having a specific composition, and/or the above-mentioned toner is in a specific shape. The replenishing toner may be produced using the above-mentioned recovered developer.

摘要翻译： 一种图像形成方法，其显着延长显影剂寿命，同时提供尺寸减小和高速着色。 此外，补充调色剂及其制造方法以及调色剂盒。 在图像形成方法中，通过具有多个静电复印单元的图像形成装置进行图像形成，至少一个静电复印单元的显影装置具有显影剂回收机构，适当地将由调色剂和载体构成的补充调色剂补充到显影剂中 从设备中回收多余的显影剂。 上述补充调色剂的载体含量在5-40重量％的范围内，上述载体是涂覆有具有特定组成的树脂的载体，和/或上述调色剂是特定的 形状。 可以使用上述回收的显影剂来制造补充调色剂。

公开(公告)号：US06489075B2

公开(公告)日：2002-12-03

申请号：US10060338

申请日：2002-02-01

申请人： Chiaki Suzuki ,  Masahiro Takagi ,  Satoshi Inoue ,  Yosuke Tsurumi ,  Kozo Ota ,  Sakon Takahashi ,  Tomohito Nakajima ,  Atsuhiko Eguchi

发明人： Chiaki Suzuki ,  Masahiro Takagi ,  Satoshi Inoue ,  Yosuke Tsurumi ,  Kozo Ota ,  Sakon Takahashi ,  Tomohito Nakajima ,  Atsuhiko Eguchi

IPC分类号： G03G1316

CPC分类号： G03G9/09725 ,  G03G9/09708

摘要： A toner for developing an electrostatic latent image, a process for producing the same, and a developer for developing an electrostatic latent image using the same are provided, in which the toner flowability, the charging property, the developing property, the transferring property and the fixing property are simultaneously satisfied in a long period of time. The toner for developing an electrostatic latent image comprising a colored particles containing a binder resin, a coloring agent and a releasing agent, and an external additive, the external additive containing a monodisperse spherical inorganic oxide having a true specific gravity of from 1.3 to 1.9 and a volume average particle diameter of from 80 to 300 nm. It is preferred that the inorganic oxide is silica, the colored particles have a shape coefficient of 125 or less, and the external additive further contains a reaction product of metatitanic acid and a coupling agent, which has an electric resistance of 1010 &OHgr;.cm or more.

公开(公告)号：US06479206B1

公开(公告)日：2002-11-12

申请号：US10132145

申请日：2002-04-26

申请人： Chiaki Suzuki ,  Masahiro Takagi ,  Satoshi Inoue ,  Yosuke Tsurumi ,  Kozo Ota ,  Sakon Takahashi ,  Tomohito Nakajima ,  Atsuhiko Eguchi

发明人： Chiaki Suzuki ,  Masahiro Takagi ,  Satoshi Inoue ,  Yosuke Tsurumi ,  Kozo Ota ,  Sakon Takahashi ,  Tomohito Nakajima ,  Atsuhiko Eguchi

IPC分类号： G03G908

CPC分类号： G03G9/09725 ,  G03G9/09708

摘要： A toner for developing an electrostatic latent image, a process for producing the same, and a developer for developing an electrostatic latent image using the same are provided, in which the toner flowability, the charging property, the developing property, the transferring property and the fixing property are simultaneously satisfied in a long period of time. The toner for developing an electrostatic latent image comprising a colored particles containing a binder resin, a coloring agent and a releasing agent, and an external additive, the external additive containing a monodisperse spherical inorganic oxide having a true specific gravity of from 1.3 to 1.9 and a volume average particle diameter of from 80 to 300 nm. It is preferred that the inorganic oxide is silica, the colored particles have a shape coefficient of 125 or less, and the external additive further contains a reaction product of metatitanic acid and a coupling agent, which has an electric resistance of 1010 &OHgr;·cm or more.