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    MAGNETIC CARRIER FOR ELECTROPHOTOGRAPHIC DEVELOPERS, PROCESS FOR PRODUCTION THEREOF, AND TWO-COMPONENT DEVELOPERS
    2.
    发明授权
    MAGNETIC CARRIER FOR ELECTROPHOTOGRAPHIC DEVELOPERS, PROCESS FOR PRODUCTION THEREOF, AND TWO-COMPONENT DEVELOPERS 有权
    磁体支撑，电力照相显影剂，工艺用于生产和两个组件开发者

    公开(公告)号：EP2439593B1

    公开(公告)日：2016-08-24

    申请号：EP10783459.0

    申请日：2010-06-04

    申请人： Toda Kogyo Corporation

    发明人： IWAMI,Katsuji ,  HARADA,Shigenori ,  KURITA,Eiichi ,  KINOSHITA,Kaori

    IPC分类号： G03G9/107 ,  G03G9/113

    CPC分类号： G03G9/1075 ,  G03G9/0819 ,  G03G9/0827 ,  G03G9/08755 ,  G03G9/0918 ,  G03G9/107 ,  G03G9/1131 ,  G03G9/1133 ,  G03G9/1134 ,  G03G9/1135 ,  G03G9/1136

    摘要： The present invention relates to a magnetic carrier for an electrophotographic developer comprising spherical magnetic composite particles comprising a phenol resin as a binder and ferromagnetic iron oxide particles bonded to each other through the phenol resin, wherein the spherical magnetic composite particles have a ten-point mean roughness Rz of 0.3 to 2.0 µm. The magnetic carrier for an electrophotographic developer according to the present invention exhibits an excellent durability against peeling-off and abrasion of coating resins formed thereon and a high stability to mechanical stress exerted onto the carrier, is free from occurrence of spent toner, can be stably held over a long period of time without occurrence of fogging and unevenness in density of toner images, and can keep high-quality images with an excellent gradation for a long period of time.

    摘要翻译： 本发明涉及一种用于在电子照相显影剂包含含有酚树脂作为粘合剂，并通过苯酚树脂彼此结合强磁性氧化铁颗粒的球形磁性复合体颗粒，worin球状磁性复合颗粒的磁性载体具有十点平均 的0.3〜2.0微米的粗糙度Rz。 在电子照相显影剂雅丁到本发明表现出抗剥离和在其上形成的涂层树脂的磨损和较高的稳定性，以机械应力的耐久性优异的磁性载体施加到载体上，是从废调色剂的发生游离，能够稳定地 举行了的时间，而不在调色剂图像的密度灰雾和不均匀性的发生期长，并能保持高品质的图像与时间的长期优异的灰度。

    MAGNETIC CARRIER FOR ELECTROPHOTOGRAPH-DEVELOPING AGENT, PROCESS FOR PRODUCTION THEREOF, AND TWO-COMPONENT DEVELOPING AGENT
    4.
    发明公开
    MAGNETIC CARRIER FOR ELECTROPHOTOGRAPH-DEVELOPING AGENT, PROCESS FOR PRODUCTION THEREOF, AND TWO-COMPONENT DEVELOPING AGENT 有权
    磁体支撑，电力照相显影基金，工艺用于双组分制备和开发手段

    公开(公告)号：EP2444847A1

    公开(公告)日：2012-04-25

    申请号：EP10789494.1

    申请日：2010-06-15

    申请人： Toda Kogyo Corporation

    发明人： KINOSHITA, Kaori ,  UEMOTO, Shinji ,  KURITA, Eiichi

    IPC分类号： G03G9/107 ,  G03G9/113

    CPC分类号： G03G9/1131 ,  G03G9/107 ,  G03G9/1133 ,  G03G9/1134 ,  G03G9/1135 ,  G03G9/1137

    摘要： The present invention relates to a magnetic carrier for an electrophotographic developer comprising spherical composite particles comprising spherical composite core particles comprising at least ferromagnetic iron oxide fine particles and a cured phenol resin and having an average particle diameter of 1 to 100 µm, and a melamine resin coating layer formed on the respective core particles, wherein a ratio of R 100 to R 300 (R 100 /R 300 ) in which R 100 is an electric resistance value as measured when applying a voltage of 100 V to the magnetic carrier; and R 300 is an electric resistance value as measured when applying a voltage of 300 V to the magnetic carrier, is controlled to lie within the range of 1 to 50. The magnetic carrier according to the present invention is capable of maintaining an adequate electric resistance value upon development, providing images having an excellent image quality, exhibiting a good durability, obtaining a good reproducibility of uniform solid image portions having a high image density, and keeping high quality images having an excellent gradation for a long period of time.

    摘要翻译： 本发明涉及一种磁性载体，在电子照相显影剂，包含球状复合粒子包括含有至少强磁性氧化铁微粒和固化的酚醛树脂和具有在1至100微米的平均粒径的球状复合体芯颗粒，和三聚氰胺树脂 涂布层形成在respectivement芯颗粒，worin - [R 100的比率至R 300（R 100 / R 300），其中R 100是作为测量时施加100V至磁性载体的电压的电阻值; 并且R 300是电阻值作为测量时施加300V的电压施加到磁性载体，被控制成位于1的范围内，以50的磁性载体雅丁到本发明能够适当电阻的维护的 在显影时值，具有优异的图像质量提供图像，显示良好的耐久性，获得具有高图像密度均匀的实心图像部分的再现性良好，并且保持具有用于长时间层次性优异的高品质图像。

    Two-component developer, replenishing developer, and image-forming method using the developers
    5.
    发明公开
    Two-component developer, replenishing developer, and image-forming method using the developers 有权
    恩维克勒（Zweikomponenten-Entwickler und Bilderzeugungsverfahren mit den Entwickler）

    公开(公告)号：EP2085828A2

    公开(公告)日：2009-08-05

    申请号：EP08156527.7

    申请日：2008-05-20

    申请人： Canon Kabushiki Kaisha

    发明人： Nakamura, Kunihiko ,  Fujikawa, Hiroyuki ,  Komatsu, Nozomu ,  Baba, Yoshinobu ,  Itakura, Takayuki

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

    CPC分类号： G03G9/081 ,  G03G9/0821 ,  G03G9/08711 ,  G03G9/08782 ,  G03G9/107 ,  G03G9/1075 ,  G03G9/1133 ,  G03G9/1134 ,  G03G9/1136

    摘要： An object of the present invention is to suppress the adhesion of a carrier to an image bearing member and the generation of a flaw in the surface layer of the image bearing member, and to improve the dot reproducibility of an electrostatic latent image, and so on. The object is achieved by a two-component developer containing a magnetic carrier, which contains resin-containingmagneticparticles, in which the packed bulk density ρ1 is 0.80 to 2.40 and ρ1/ρ2 ( ρ2 represents true density) is 0.20 to 0.42 of the porous magnetic core particles, and a specific resistance of the porous magnetic core particles, an average breaking strength of the magnetic carrier and a toner surface tension constant in a 45-vol% aqueous solution of methanol measured by a capillary suction time method fall into the specific range, respectively.

    摘要翻译： 本发明的目的是抑制载体与图像承载部件的粘附和图像承载部件的表面层中的缺陷的产生，并且提高静电潜像的点再现性等 。 该目的是通过包含含有含树脂的磁性颗粒的磁性载体的双组分显影剂实现的，其中填充体积密度Á1为0.80〜2.40，Á1/²2（Á2表示真实密度）为多孔磁性体的0.20〜0.42 核心颗粒和多孔磁性核颗粒的电阻率，通过毛细管抽吸时间法测量的45体积％甲醇水溶液中磁性载体的平均断裂强度和调色剂表面张力常数落在特定范围内 ， 分别。

    IMPROVED CARRIER MATERIALS
    8.
    发明公开
    IMPROVED CARRIER MATERIALS 审中-公开
    TRÄGERMATERIALIEN

    公开(公告)号：EP1036349A4

    公开(公告)日：2000-11-22

    申请号：EP99905451

    申请日：1999-01-22

    申请人： NASHUA CORP

    发明人： VAIL WILFRED E

    IPC分类号： G03G9/113 ,  G03G9/00 ,  G03G5/00 ,  G03G9/083 ,  G03G9/107

    CPC分类号： G03G9/1134 ,  G03G9/1131 ,  G03G9/1138 ,  G03G9/1139

    摘要： Improved carrier materials for use in electrophotographic processes and processes for producing such carrier materials are disclosed. The carrier materials feature a preferably conductive core coated with an first conductive layer and a second, insulative layer. The coating layers preferably comprise a fluoropolymer matrix or other triboelectrically chargeable substance or substances. In one embodiment the same fluoropolymer is used in the first and second coatings.

    摘要翻译： 公开了用于电子照相方法的改进的载体材料（10）和制造这种载体材料（10）的方法。 载体材料（10）具有涂覆有第一导电层（12）和第二绝缘层（13）的优选导电芯（11）。 涂层优选包含含氟聚合物基质或其他可摩擦带电的物质或物质。 在一个实施方案中，在第一和第二涂层中使用相同的含氟聚合物。

    Magnetic carrier, two-component developer and image forming method
    10.
    发明公开
    Magnetic carrier, two-component developer and image forming method 有权
    磁性载体，双组分显影剂和成像方法

    公开(公告)号：EP0974873A3

    公开(公告)日：2000-04-19

    申请号：EP99305786.8

    申请日：1999-07-21

    申请人： CANON KABUSHIKI KAISHA

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

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

    CPC分类号： G03G9/09708 ,  G03G9/09716 ,  G03G9/09725 ,  G03G9/107 ,  G03G9/1075 ,  G03G9/1132 ,  G03G9/1134 ,  G03G9/1135 ,  G03G9/1139

    摘要： A magnetic carrier constituting a two-component developer for use in an electrophotographic image forming method is formed of a carrier core comprising a first resin and magnetic fine particles dispersed in the first resin, and a second resin surface-coating the carrier core. (a) The magnetic carrier has a true specific gravity of 2.5 - 4.5, a magnetization σ 1000 as measured in a magnetic field of 1000x(10 3 /4π)·A/m (1000 oersted) of 15 - 60 Am 2 /kg (emu/g), a residual magnetization σ r of 0.1 - 20 Am 2 /kg (emu/g) and a resistivity of 5x10 11 - 5x10 15 ohm.cm. (b) The first resin has a polymer chain including a methylene unit (-CH 2 -). (c) The second resin has at least a fluoro-alkyl unit, a methylene unit (-CH 2 -) and an ester unit. (d) The carrier core is surface-coated with (i) a mixture of the second resin and a coupling agent having at least an amino group and a methylene unit, or (ii) a coupling agent having at least an amino group and a methylene unit, and then with the second resin.

    摘要翻译： 构成用于电子照相图像形成方法的双组分显影剂的磁性载体由载体核心和第二树脂形成，所述载体核心包含第一树脂和分散在第一树脂中的磁性细颗粒，所述第二树脂表面涂覆载体核心。 （a）磁性载体的真比重为2.5-4.5，在1000×（103 /4π）·A / m（1000奥斯特）的磁场中测得的磁化强度σ1000为15-60Am2 / kg（emu / g），0.1-20Am 2 / kg（emu / g）的剩余磁化σr和5×10 11 -5×10 15 ohm.cm的电阻率。 （b）第一树脂具有包含亚甲基单元（-CH 2 - ）的聚合物链。 （c）第二树脂至少具有氟烷基单元，亚甲基单元（-CH 2 - ）和酯单元。 （d）将载体芯用（i）第二树脂和具有至少一个氨基和一个亚甲基单元的偶联剂的混合物，或（ii）具有至少一个氨基和 亚甲基单元，然后与第二种树脂混合。