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    Dyed stabilized liquid developer and method for making
    2.
    发明授权
    Dyed stabilized liquid developer and method for making 失效
    染色稳定液体显影剂及其制造方法

    公开(公告)号：US4476210A

    公开(公告)日：1984-10-09

    申请号：US499054

    申请日：1983-05-27

    申请人： Melvin D. Croucher ,  James M. Duff ,  Michael L. Hair ,  Kar P. Lok ,  Raymond W. Wong

    发明人： Melvin D. Croucher ,  James M. Duff ,  Michael L. Hair ,  Kar P. Lok ,  Raymond W. Wong

    IPC分类号： G03G9/12 ,  G03G9/13

    CPC分类号： G03G9/122 ,  G03G9/131 ,  G03G9/133

    摘要： A stable colored liquid developer and method for making such are described wherein an improved optical density resulting from a colored dye being imbibed into a thermoplastic resin core occurs. In particular, the liquid developer comprises a marking particle dispersed in an aliphatic dispersion medium, the marking particle comprises a thermoplastic resin core having an amphipathic block or graft copolymeric steric stabilizer irreversibly chemically or physically anchored to the thermoplastic resin core with the dye being imbibed in the resin core and being soluble therein and insoluble in the dispersion medium. The stable colored liquid developer is preferably made by first preparing a graft or block copolymer amphipathic steric stabilizer, anchoring said stabilizer to a thermoplastic resin core, and to the aliphatic disperion of said particle adding a solution of a dye dissolved in a polar solvent, preferrably methanol, the dye being soluble in the thermoplastic resin core to enable it to be imbibed therein and substantially insoluble in the dispersion medium.

    摘要翻译： 描述稳定的着色液体显影剂及其制备方法，其中出现由着色染料吸收到热塑性树脂芯中得到的改善的光密度。 特别地，液体显影剂包括分散在脂族分散介质中的标记颗粒，标记颗粒包括具有两亲性嵌段或接枝共聚空间稳定剂的热塑性树脂芯，其不可逆地化学或物理锚定到热塑性树脂芯上，染料被吸入 树脂芯并且可溶于其中并且不溶于分散介质中。 稳定着色的液体显影剂优选通过首先制备接枝或嵌段共聚物两亲空间稳定剂，将所述稳定剂锚定到热塑性树脂核心，以及添加溶解在极性溶剂中的染料溶液的所述颗粒的脂肪族分散体，优选地 甲醇，染料可溶于热塑性树脂核心，使其能够吸收在其中并且基本上不溶于分散介质中。

    Fluorescent toner processes
    6.
    发明授权
    Fluorescent toner processes 失效
    荧光调色剂工艺

    公开(公告)号：US5554480A

    公开(公告)日：1996-09-10

    申请号：US299392

    申请日：1994-09-01

    申请人： Raj D. Patel ,  H. Bruce Goodbrand ,  Grazyna E. Kmiecik-Lawrynowicz ,  Michael A. Hopper ,  Melvin D. Croucher ,  James M. Duff

    发明人： Raj D. Patel ,  H. Bruce Goodbrand ,  Grazyna E. Kmiecik-Lawrynowicz ,  Michael A. Hopper ,  Melvin D. Croucher ,  James M. Duff

    IPC分类号： G03G9/08 ,  G03G9/09 ,  G03G9/087

    CPC分类号： G03G9/0804 ,  G03G9/0926

    摘要： A process for the preparation of fluorescent toner compositions comprising(i) preparing a pigment dispersion in a solvent, which dispersion is comprised of a pigment or dye, an ionic surfactant and optionally a charge control agent;(ii) shearing the pigment dispersion with a latex mixture comprised of a counterionic surfactant with a charge polarity of opposite sign to that of said ionic surfactant, a nonionic surfactant and resin particles, thereby causing a flocculation or heterocoagulation of pigment, resin particles and charge control agent to form electrostatically bound toner size aggregates; and(iii) heating the statically bound aggregated particles to form said toner composition comprised of polymeric resin, pigment and optionally a charge control agent, and wherein the pigment or dye is excitable by ultraviolet light in the frequency range of from about 254 to about 366 nanometers and fluoresces in the visible spectrum of from about 400 to about 700 nanometers.

    摘要翻译： 一种制备荧光调色剂组合物的方法，包括（i）在溶剂中制备颜料分散体，该分散体由颜料或染料，离子表面活性剂和任选的电荷控制剂组成; （ii）用包含与所述离子表面活性剂相反的电荷极性的反离子表面活性剂，非离子表面活性剂和树脂颗粒的胶乳混合物剪切颜料分散体，从而引起颜料，树脂颗粒和电荷的絮凝或杂合 控制剂形成静电结合的调色剂尺寸聚集体; 和（iii）加热静态结合的聚集颗粒以形成由聚合物树脂，颜料和任选的电荷控制剂组成的所述调色剂组合物，并且其中颜料或染料可以通过紫外光在约254至约366的频率范围内激发 纳米，并且在约400至约700纳米的可见光谱中发荧光。

    Process for forming secure images
    7.
    发明授权
    Process for forming secure images 失效
    用于形成安全图像的过程

    公开(公告)号：US5021318A

    公开(公告)日：1991-06-04

    申请号：US386751

    申请日：1989-07-28

    申请人： James D. Mayo ,  Stephen Drappel ,  James M. Duff ,  Melvin D. Croucher ,  John M. Lennon

    发明人： James D. Mayo ,  Stephen Drappel ,  James M. Duff ,  Melvin D. Croucher ,  John M. Lennon

    IPC分类号： G03G7/00 ,  G03G13/16 ,  G03G13/22 ,  G03G15/22

    CPC分类号： G03G7/00 ,  G03G13/16 ,  Y10S428/916

    摘要： Disclosed is a process for forming secure images which comprises electrostatically charging an imaging member; imagewise exposing the charged member, thereby forming a latent image on the member; developing the latent image with a liquid developer comprising a liquid medium, a charge control additive, and toner particles comprising a colorant and a polymeric material; allowing the developed image to dry on the imaging member; contacting the portion of the imaging member with the dry developed image with a substantially transparent sheet having an adhesive material on the surface thereof in contact with the imaging member, thereby transferring the developed image from the imaging member to the substantially transparent sheet; contacting the adhesive surface of the substantially transparent sheet with the developed image with a paper sheet having a polymeric coating on the surface that is in contact with the substantially transparent sheet; and applying heat and pressure to the substantially transparent sheet and the paper sheet at a temperature and pressure sufficient to affix the image permanently to the paper. The resulting document is a paper sheet covered with the transparent sheet, with the developer material that forms the image being situated between the paper sheet and the transparent sheet. The disclosed process is generally useful for applications such as passport photographs, identification badges, banknote paper, and the like.

    Process for the authentication of documents utilizing encapsulated toners
    8.
    发明授权
    Process for the authentication of documents utilizing encapsulated toners 失效
    使用封装调色剂的文件验证流程

    公开(公告)号：US5208630A

    公开(公告)日：1993-05-04

    申请号：US787470

    申请日：1991-11-04

    申请人： H. Bruce Goodbrand ,  James M. Duff ,  Raymond W. Wong

    发明人： H. Bruce Goodbrand ,  James M. Duff ,  Raymond W. Wong

    IPC分类号： G03G9/09 ,  G03G9/093 ,  G03G21/04

    CPC分类号： G03G9/0926 ,  G03G21/04 ,  G03G9/093

    摘要： A process for the authentication of documents which comprises generating developed documents in an electophotographic apparatus, or in a laser printer, with an encapsulated toner comprised of a core comprised of polymer, pigment, and an infrared absorbing component, and thereover a polymeric shell; and subjecting the document to an infrared reader whereby the near infrared absorbing component is detected spectroscopically.

    摘要翻译： 一种用于认证文件的方法，其包括在电摄影装置或激光打印机中生成已开发的文档，其中包括由聚合物，颜料和红外线吸收组分构成的核心的包封调色剂，以及聚合物外壳; 并将文件经受红外线读取器，由此近红外线吸收组分被光谱检测。