公开(公告)号：EP1258785A3

公开(公告)日：2009-08-19

申请号：EP02010123.4

申请日：2002-05-10

申请人： Eastman Kodak Company

发明人： Fields, Robert D. ,  Foster, Thomas J. ,  Jadwin, Thomas A. ,  Nielsen, Paul L. ,  Tyagi, Dinesh

IPC分类号： G03G15/20 ,  G03G9/097

CPC分类号： G03G9/1136 ,  G03G9/09708 ,  G03G9/09725 ,  G03G9/09733 ,  G03G9/1075 ,  G03G9/1133 ,  G03G9/1134 ,  G03G9/1135 ,  G03G13/09 ,  G03G13/20

摘要： Development systems and methods for developing using toner are disclosed. The present invention further discloses developers used in development systems. With respect to the development system, a development system is disclosed which includes a supply of dry developer mixture which contains toner particles and hard magnetic carrier particles. The development system further includes a non-magnetic, cylindrical shell for transporting the developer between the supply and the development zone, wherein the shell can be rotatable or stationary. A rotating magnetic core of a pre-selected magnetic field strength and means for rotating at least the magnetic core to provide for the transport of the toner particles from the shell to an electrostatic image also provided as part of the development system. The development system of the present invention further includes a fuser roll which is coated with a silicone rubber or other low surface energy elastomer or resin. The fuser roll is preferably in a pressure contact arrangement with a backup or pressure roll. The images resulting from the development system of the present invention have an excellent combination of properties, in particular, the prints resulting from the development process of the present invention have improved image quality in combination with excellent fusing quality. A method for developing electrostatic images with toner is further disclosed, for example, involving the above-described development system.

公开(公告)号：EP1657595A3

公开(公告)日：2009-04-01

申请号：EP05024434.2

申请日：2005-11-09

申请人： Powdertech Co., Ltd.

发明人： Uemura, Tetsuya ,  Honjo, Toshio ,  Kayamoto, Kanao

IPC分类号： G03G9/107

CPC分类号： G03G9/1135 ,  G03G9/1075 ,  G03G9/1134 ,  G03G9/1139

摘要： A resin-coated ferrite carrier having a uniform resin coating and emitting no offensive odors, etc., its production method, and an electrophotographic developer which comprises the resin-coated ferrite carrier, is excellent in the charge stability and image quality stability over a long period, causes less fogging of image or carrier adhesion, is favorable in the image density and environmental dependency, and can fully respond to high-speed and full-color imaging, are provided. The resin-coated ferrite carrier for the electrophotographic developer is characterized in that the surface of ferrite particles is coated with a mixed resin of a tetrafluoroethylene-hexafluoropropylene copolymer or a tetrafluoroethylene-perfluoroalkylvinyl ether copolymer and a polyamideimide resin, and that the mixed resin contains a silicon oxide.

公开(公告)号：EP1736833A1

公开(公告)日：2006-12-27

申请号：EP06115247.6

申请日：2006-06-09

申请人： Xerox Corporation

发明人： Skorokhod, Vladislav ,  Farrugia, Valerie M ,  Hawkins, Michael S ,  Veregin, Richard P N

IPC分类号： G03G9/087

CPC分类号： G03G9/08708 ,  G03G9/0808 ,  G03G9/08711 ,  G03G9/08755 ,  G03G9/08782 ,  G03G9/08791 ,  G03G9/08795 ,  G03G9/08797 ,  G03G9/107 ,  G03G9/1133 ,  G03G9/1134

摘要： A toner having a crystalline or semi-crystalline polyester resin, an amorphous resin and a colorant. The toner preferably exhibits a resistivity of at least 1×10 11 ohm-cm. A developer may be produced including the toner and optionally a carrier. If a carrier is included, the carrier preferably exhibits a resistivity of greater than 1×10 7 ohm-cm. An electrophotographic machine includes the toner exhibiting high resistivity.

摘要翻译： 具有结晶或半结晶聚酯树脂，无定形树脂和着色剂的调色剂。 调色剂优选具有至少1×10 11 ohm-cm的电阻率。 可以生产显影剂，包括调色剂和任选的载体。 如果包含载体，载体优选具有大于1×10 7欧姆 - 厘米的电阻率。 电子照相机包括显示高电阻率的调色剂。

公开(公告)号：EP1455237A3

公开(公告)日：2005-11-23

申请号：EP04005157.5

申请日：2004-03-04

申请人： CANON KABUSHIKI KAISHA

发明人： Baba, Yoshinobu ,  Sato, Yuko ,  Fujita, Ryoichi ,  Kotaki, Takaaki ,  Sugahara, Nobuyoshi ,  Terauchi, Kazuo ,  Itakura, Takayuki

IPC分类号： G03G9/08 ,  G03G9/097 ,  G03G9/087

CPC分类号： G03G9/08742 ,  G03G9/0819 ,  G03G9/0821 ,  G03G9/0827 ,  G03G9/08702 ,  G03G9/08755 ,  G03G9/10 ,  G03G9/1134

摘要： The present invention provides a toner: comprising a binder resin comprising a polyester unit, a colorant, a releasing agent, and inorganic fine particles; has a weight average particle diameter of 3.0 - 6.5 µm; has an average circularity of particles in the toner each having a circle-equivalent diameter of 2 µm or more of 0.920 - 0.945; has a BET specific surface area of 2.1 - 3.5 m 2 /g; and has a permeability of light of a wavelength of 600 nm in a liquid having dispersed the toner in a 45 vol% methanol aq. of 30 - 80%. The present invention also provides a two-component developer: comprising the toner and a magnetic carrier comprising magnetic core particles coated by a coating layer; and has a number average particle diameter of 15 - 80 µm. Using the toner and the two-component developer enables a high-quality image to be formed at a high speed even in an oilless fixing system.

公开(公告)号：EP1477864A1

公开(公告)日：2004-11-17

申请号：EP04010219.6

申请日：2004-04-29

申请人： CANON KABUSHIKI KAISHA

发明人： Baba, Yoshinobu ,  Fujita, Ryoichi ,  Kaya, Takaaki ,  Terauchi, Kazuo

IPC分类号： G03G9/113 ,  G03G9/107

CPC分类号： G03G9/1139 ,  G03G9/107 ,  G03G9/1075 ,  G03G9/1134 ,  G03G9/1138

摘要： A magnetic carrier includes a magnetic material-dispersed resin core containing at least a magnetic material and a binder resin. The surface of the magnetic material-dispersed resin core is coated with a coating material containing at least a fluorine resin and 1 to 40 parts by weight of fine particles based on 100 parts by weight of the fluorine resin. The coating material is in an amount of 0.3 to 4.0 parts by weight based on 100 parts by weight of the magnetic material-dispersed resin core. The magnetic carrier has a contact angle of 95 to 125°. A two-component developer is also provided which makes use of the magnetic carrier.

摘要翻译： 磁性载体包括至少包含磁性材料和粘合剂树脂的磁性材料分散树脂芯。 基于100重量份的氟树脂，磁性材料分散树脂芯的表面涂覆有至少含有氟树脂的涂料和1至40重量份的微粒。 基于100重量份的磁性材料分散树脂芯，涂层材料的量为0.3-4.0重量份。 磁性载体的接触角为95〜125°。 还提供使用磁性载体的双组分显影剂。

公开(公告)号：EP1455237A2

公开(公告)日：2004-09-08

申请号：EP04005157.5

申请日：2004-03-04

申请人： CANON KABUSHIKI KAISHA

发明人： Baba, Yoshinobu ,  Sato, Yuko ,  Fujita, Ryoichi ,  Kotaki, Takaaki ,  Sugahara, Nobuyoshi ,  Terauchi, Kazuo ,  Itakura, Takayuki

IPC分类号： G03G9/08 ,  G03G9/097 ,  G03G9/087

CPC分类号： G03G9/08742 ,  G03G9/0819 ,  G03G9/0821 ,  G03G9/0827 ,  G03G9/08702 ,  G03G9/08755 ,  G03G9/10 ,  G03G9/1134

摘要： The present invention provides a toner: comprising a binder resin comprising a polyester unit, a colorant, a releasing agent, and inorganic fine particles; has a weight average particle diameter of 3.0 - 6.5 µm; has an average circularity of particles in the toner each having a circle-equivalent diameter of 2 µm or more of 0.920 - 0.945; has a BET specific surface area of 2.1 - 3.5 m 2 /g; and has a permeability of light of a wavelength of 600 nm in a liquid having dispersed the toner in a 45 vol% methanol aq. of 30 - 80%. The present invention also provides a two-component developer: comprising the toner and a magnetic carrier comprising magnetic core particles coated by a coating layer; and has a number average particle diameter of 15 - 80 µm. Using the toner and the two-component developer enables a high-quality image to be formed at a high speed even in an oilless fixing system.

摘要翻译： 本发明提供一种调色剂：包含粘合剂树脂，其包含聚酯单元，着色剂，脱模剂和无机细颗粒; 重均粒径为3.0-6.5μm; 调色剂中的平均圆形颗粒的圆当量直径为2μm或更大，为0.920-0.945; 具有2.1-3.5m 2 / g的BET比表面积; 并且在具有将调色剂分散在45体积％甲醇水溶液中的液体中具有600nm波长的光的渗透性。 为30-80％。 本发明还提供了一种双组分显影剂：包括调色剂和包含被涂层涂覆的磁芯颗粒的磁性载体; 数均粒径为15〜80μm。 使用调色剂和双组分显影剂使得即使在无油定影系统中也能够以高速形成高质量图像。

公开(公告)号：EP0933382B1

公开(公告)日：2003-07-16

申请号：EP99101112.3

申请日：1999-01-21

申请人： Xerox Corporation

发明人： Enright, Thomas E. ,  Liebermann, George ,  Silence, Scott M. ,  Henderson, K. Derek ,  Mahabadi, Hadi K. ,  Kelly, Bernard A.

IPC分类号： C08F2/30 ,  C08F2/24

CPC分类号： G03G9/1134 ,  C08F2/20 ,  C08F291/00 ,  G03G9/1131 ,  G03G9/1133 ,  C08F2/18

公开(公告)号：EP0767412B1

公开(公告)日：2001-03-21

申请号：EP96307178.2

申请日：1996-10-01

申请人： NASHUA CORPORATION

发明人： Vail, Wilfred E.

IPC分类号： G03G9/113 ,  G03G9/10

CPC分类号： G03G9/1138 ,  G03G9/10 ,  G03G9/1134

公开(公告)号：EP0961176A1

公开(公告)日：1999-12-01

申请号：EP99110154.4

申请日：1999-05-25

申请人： NASHUA CORPORATION

发明人： Bartus, Jan ,  Vail, Wilfred

IPC分类号： G03G9/113 ,  G03G9/107

CPC分类号： G03G9/1134 ,  G03G9/1075

摘要： A carrier composition is provided for electrophotographic development. Core particles are coated with a graft copolymer of a fluoropolymer and methyl methacrylate. The core particles preferably are a material selected from steel, nickel, iron, ferrites, passivated iron, or mixtures or alloys thereof. The fluoropolymer preferably is a polymer selected from chlorotrifluoroethylene, polyvinylidene fluoride, polytrifluoroethylene, polytetrafluoroethylene, copolymers of vinylidene fluoride and hexafluoropropylene, and copolymers of vinylidene fluoride and tetrafluoroethylene. In a preferred carrier composition, the coating consists of two layers. The exterior layer is a graft copolymer made of a fluoropolymer and methyl methacrylate.

摘要翻译： 提供用于电子照相显影的载体组合物。 核心颗粒用含氟聚合物和甲基丙烯酸甲酯的接枝共聚物涂覆。 核心颗粒优选为选自钢，镍，铁，铁素体，钝化铁或其混合物或合金的材料。 含氟聚合物优选为选自三氟氯乙烯，聚偏二氟乙烯，聚三氟乙烯，聚四氟乙烯，偏二氟乙烯和六氟丙烯的共聚物，偏二氟乙烯和四氟乙烯的共聚物的聚合物。 在优选的载体组合物中，涂层由两层组成。 外层是由含氟聚合物和甲基丙烯酸甲酯制成的接枝共聚物。

公开(公告)号：EP0704472A3

公开(公告)日：1996-07-03

申请号：EP95116339.3

申请日：1992-02-18

申请人： FUJI XEROX CO., LTD.

发明人： Matsumura, Yasuo ,  Takano, Hiroshi ,  Takagi, Masahiro ,  Yoshimura, Mamoru

IPC分类号： C08G77/04 ,  G03G9/113

CPC分类号： G03G9/09741 ,  G03G9/1131 ,  G03G9/1134 ,  G03G9/1136 ,  Y10T428/2998

摘要： A carrier for developing an electrostatic latent image, which carrier comprises core particles having formed thereon a resin coating layer, in which the resin coating layer comprises a fluorine-containing resin and a second resin having a softening point lower than that of the fluorine-containing resin, and the resin and the second resin each are partially exposed on the surface of said resin coating layer. The carrier may be produced by a process comprising the steps of: dry-blending core particles, a fluorine-containing resin, and a second resin having a softening point lower than that of said fluorine-containing resin; and melting the resin blend to coat said core particles. The carrier is excellent in stability with time and environmental changes, causes no adhesion, and is less consumed.

摘要翻译： 一种用于显影静电潜像的载体，该载体包括其上形成有树脂涂层的核心颗粒，其中树脂涂层包含含氟树脂和软化点低于含氟树脂的第二树脂 树脂，并且树脂和第二树脂各自部分地暴露在所述树脂涂层的表面上。 载体可以通过包括以下步骤的方法制备：干混芯粒，含氟树脂和软化点低于所述含氟树脂的第二树脂; 和熔化树脂共混物以涂覆所述核心颗粒。 载体具有优异的稳定性，随着时间和环境的变化，导致不粘附，并且消耗更少。