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    Carrier composition
    4.
    发明授权
    Carrier composition 有权
    载体组成

    公开(公告)号：US07419755B2

    公开(公告)日：2008-09-02

    申请号：US11159035

    申请日：2005-06-22

    申请人： Deepak R. Maniar ,  Thomas C. Dombroski ,  Christopher M. Pattison ,  Bernard A. Kelly

    发明人： Deepak R. Maniar ,  Thomas C. Dombroski ,  Christopher M. Pattison ,  Bernard A. Kelly

    IPC分类号： G03G9/00

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

    摘要： Carrier particles comprise a core and a polymer coating that comprises a mixture of polymethyl methacrlyate (PMMA) and melamine. The coating compositions comprise from about 60 to about 80 percent by weight of PMMA and from about 20 to about 40 percent by weight of melamine. The carriers may be combined with a toner to provide a developer suitable for use in an electrostatographic process. Carriers comprising the PMMA/melamine coatings exhibit increased triboelectric charging, a more conductive carrier, and also contribute to reducing toner cohesion.

    摘要翻译： 载体颗粒包含芯和聚合物涂层，其包含聚甲基丙烯酸甲酯（PMMA）和三聚氰胺的混合物。 涂料组合物包含约60至约80重量％的PMMA和约20至约40重量％的三聚氰胺。 载体可以与调色剂组合以提供适合用于静电照相方法的显影剂。 包含PMMA /三聚氰胺涂层的载体表现出增加的摩擦电荷，更导电的载体，并且还有助于减少调色剂的内聚力。

    Carrier particle compositions for xerographic developers
    6.
    发明授权
    Carrier particle compositions for xerographic developers 失效
    载体颗粒组合物用于静电印迹显影剂

    公开(公告)号：US07572565B2

    公开(公告)日：2009-08-11

    申请号：US11279508

    申请日：2006-04-12

    申请人： Eugene F. Young ,  Thomas C. Dombroski ,  Deepak R. Maniar ,  Mark S. Jackson

    发明人： Eugene F. Young ,  Thomas C. Dombroski ,  Deepak R. Maniar ,  Mark S. Jackson

    IPC分类号： G03G9/113

    CPC分类号： G03G9/1075 ,  G03G9/10 ,  G03G9/1133 ,  G03G9/1138

    摘要： Carrier includes a mixture of carrier particles. The mixture may contain first carrier particles containing carrier cores that are coated with a polymer coating, the coating containing polymer and conductive particles, and second carrier particles containing carrier cores that are not coated with a polymer coating. The mixture may contain carrier particles having a conductivity of at least about 5×10−8 (ohm-cm)−1 and carrier particles having a conductivity of less than about 1×10−8 (ohm-cm)−1.

    摘要翻译： 载体包括载体颗粒的混合物。 混合物可以包含含有涂覆有聚合物涂层的载体芯的第一载体颗粒，含有涂层的聚合物和导电颗粒，以及包含未涂覆聚合物涂层的载体芯的第二载体颗粒。 该混合物可以含有导电率为至少约5×10 -8（ohm-cm）-1的载体颗粒和导电率小于约1×10-8（ohm-cm）-1的载体颗粒。

    Processes for stabilizing developer chargability and imaging processes thereof
    8.
    发明授权
    Processes for stabilizing developer chargability and imaging processes thereof 失效
    用于稳定显影剂充电性及其成像方法的方法

    公开(公告)号：US5674656A

    公开(公告)日：1997-10-07

    申请号：US587093

    申请日：1996-01-16

    申请人： Deepak R. Maniar

    发明人： Deepak R. Maniar

    IPC分类号： G03G9/08 ,  G03G9/097 ,  G03G9/113 ,  G03G13/09 ,  G03G13/08

    CPC分类号： G03G9/09741 ,  G03G13/09 ,  G03G9/08 ,  G03G9/1134

    摘要： A process for controlling A.sub.t transience comprising: providing in a developer housing, a two component developer composition comprising toner particles comprised of a resin, a pigment, a mixture of at least two charge additives, and unpreconditioned coated carrier core particles, wherein the developer is prepared by combining and thereafter blending a mixture of from 1 to about 10 parts by weight of toner particles with from about 100 parts by weight of carrier particles for about 10 minutes to about 30 minutes until an A.sub.t value of from about 60 to about 100 is attained; and forming and thereafter developing electrostatographic latent images on a photoconductive member in a two component development electrostatographic imaging apparatus with the developer composition; wherein the developer composition has an A.sub.t transient of less than about 20 relative units.

    摘要翻译： 一种用于控制瞬时的方法，包括：在显影剂外壳中提供包含由树脂，颜料，至少两种电荷添加剂的混合物和未预处理的涂覆的载体芯颗粒组成的调色剂颗粒的双组分显影剂组合物，其中显影剂 通过将约1至约10重量份的调色剂颗粒与约100重量份的载体颗粒的混合物混合约10分钟至约30分钟直至约60至约100的At值为约 达到 并在显影剂组合物的双组分显影静电摄影成像装置中形成并随后在感光体上显影静电潜像; 其中显影剂组合物具有小于约20个相对单位的At瞬态。

    Process for coating carrier particles
    9.
    发明授权
    Process for coating carrier particles 失效
    涂覆载体颗粒的方法

    公开(公告)号：US5223369A

    公开(公告)日：1993-06-29

    申请号：US851589

    申请日：1992-03-16

    申请人： Joseph Mammino ,  Deepak R. Maniar

    发明人： Joseph Mammino ,  Deepak R. Maniar

    IPC分类号： G03G9/113

    CPC分类号： G03G9/1131

    摘要： Small amounts of a latent solvent are added during the initial powder impaction of the powder coating process of toner carrier particles so as to avoid excessive heating. The temperature of the mixture is raised until the solvent softens the polymer, thereby making the coating uniform. Solvent is later removed to obtain the dry coated carrier. The process is especially useful when using coating materials which have a thermal processing narrow temperature range.

    摘要翻译： 在调色剂载体颗粒的粉末涂覆过程的初始粉末冲击期间，添加少量的潜在溶剂，以避免过度加热。 混合物的温度升高直到溶剂使聚合物软化，从而使涂层均匀。 溶剂随后被去除以获得干涂层载体。 当使用具有热处理温度范围窄的涂层材料时，该方法特别有用。

    Carrier and developer providing offset lithography print quality
    10.
    发明授权
    Carrier and developer providing offset lithography print quality 有权
    载体和显影剂提供胶印印刷质量

    公开(公告)号：US06177221B1

    公开(公告)日：2001-01-23

    申请号：US09520358

    申请日：2000-03-07

    申请人： Deepak R. Maniar ,  Scott M. Silence ,  Merrilee A. Galloway

    发明人： Deepak R. Maniar ,  Scott M. Silence ,  Merrilee A. Galloway

    IPC分类号： G03G9113

    CPC分类号： G03G9/107 ,  G03G9/10 ,  G03G9/113 ,  G03G9/1133 ,  Y10T428/2991

    摘要： A carrier for a developer composition includes a steel core having a shape factor of 6 or more coated with a coating at a coating weight of from 0.1 to 3.0% by weight of a total core weight. The coating is most preferably polymethyl methacrylate. The steel core also preferably has an average particle diameter of 70 to 89 micrometers and a size distribution wherein 1.5% or less of a total number of carrier particles have a size less than 38 micrometers. The carrier is preferably used in conjunction with toner particles to form a developer for particular use in devices utilizing hybrid scavengeless development. Use of a carrier in such a developer in a hybrid scavengeless development apparatus enables images to be achieved with properties similar to that achieved in offset lithography.

    摘要翻译： 用于显影剂组合物的载体包括具有6或更大的形状因子的钢芯，其涂覆的涂层重量为总芯重量的0.1至3.0重量％。 涂层最优选为聚甲基丙烯酸甲酯。 钢芯也优选具有70至89微米的平均粒径和尺寸分布，其中载体颗粒总数的1.5％或更小具有小于38微米的尺寸。 载体优选与调色剂颗粒结合使用以形成特别用于利用混合无花开发的装置的显影剂。 在这种显影剂中使用载体在混合清扫开发装置中可以实现具有类似于胶印光刻中所获得的图像的图像。