公开(公告)号：US4569896A

公开(公告)日：1986-02-11

申请号：US659399

申请日：1984-10-10

申请人： Steven R. Perez ,  Jacques C. Bertrand ,  Timothy W. Jacobs ,  Raymond L. Sommers ,  George W. Vianco, Jr.

发明人： Steven R. Perez ,  Jacques C. Bertrand ,  Timothy W. Jacobs ,  Raymond L. Sommers ,  George W. Vianco, Jr.

IPC分类号： C08L25/00 ,  C08K3/00 ,  C08K3/02 ,  C08K3/04 ,  C08K3/22 ,  C08K3/36 ,  C08L1/00 ,  C08L7/00 ,  C08L21/00 ,  C08L23/00 ,  C08L25/04 ,  C08L27/00 ,  C08L33/00 ,  C08L33/02 ,  C08L51/00 ,  C08L51/02 ,  C08L67/00 ,  C08L77/00 ,  C08L101/00 ,  G03G9/083 ,  G03G9/087 ,  G03G9/09 ,  H01F1/36 ,  G03G9/14

CPC分类号： G03G9/08708 ,  G03G9/08711 ,  G03G9/08731 ,  G03G9/08788 ,  G03G9/08793 ,  G03G9/0904 ,  H01F1/36

摘要： An improved single component magnetic toner composition with a resistivity of from about 10.sup.13 to about 10.sup.16 ohm/cm, at 1,000 volts, and comprised of:(a) first resin particles of a styrene methacrylate copolymer grafted with or containing a low molecular weight wax composition;(b) second resin particles of a styrene, acrylate, acrylonitrile terpolymer;(c) a major amount of magnetite particles; and(d) islands or patches of carbon black particles in an amount of from about 0.1 percent to about 1 percent by weight, contained on the surface of the resin particles.

摘要翻译： 一种改进的单组分磁性调色剂组合物，其电阻率为约1013至约1016欧姆/厘米，1,000伏特，并包括：（a）接枝或含有低分子量蜡组合物的苯乙烯甲基丙烯酸酯共聚物的第一树脂颗粒 ; （b）苯乙烯，丙烯酸酯，丙烯腈三元共聚物的第二树脂颗粒; （c）大量的磁铁矿颗粒; 和（d）包含在树脂颗粒表面上的约0.1重量％至约1重量％的碳黑颗粒岛或块状物。

公开(公告)号：US4264697A

公开(公告)日：1981-04-28

申请号：US54123

申请日：1979-07-02

申请人： Steven R. Perez ,  Alan R. Monahan ,  Chin H. Lu ,  Peter F. Erhardt ,  Eugene F. Young ,  Christopher J. AuClair

发明人： Steven R. Perez ,  Alan R. Monahan ,  Chin H. Lu ,  Peter F. Erhardt ,  Eugene F. Young ,  Christopher J. AuClair

IPC分类号： G03G9/08 ,  G03G9/097 ,  G03G9/10 ,  G03G9/113 ,  G03G9/00

CPC分类号： G03G9/1131 ,  G03G9/09741 ,  G03G9/09758

摘要： An electrostatographic developer mixture comprising finely-divided positively charging toner particles electrostatically clinging to negatively charging carrier particles. The toner particles comprise a resin, a colorant, and a charge inducing material selected from (1) a long chain hydrazinium compound and (2) an alkyl pyridinium compound. The carrier particles comprise core particles having a coating of fused thermoplastic resin particles wherein the carrier particles are prepared by dry-mixing the core particles with thermoplastic resin particles until the resin particles adhere to the core particles. The mixture of core and resin particles are heated to between 320.degree. F. and 650.degree. F. for between 20 and 120 minutes so that the resin particles melt and fuse to the core particles. The developer mixture is employed to develop electrostatic latent images.

摘要翻译： 一种静电显影剂混合物，其包含微分正电的调色剂颗粒静电粘附到负电荷载体颗粒。 调色剂颗粒包含选自（1）长链腙化合物和（2）烷基吡啶鎓化合物的树脂，着色剂和电荷诱导材料。 载体颗粒包括具有熔融热塑性树脂颗粒涂层的芯颗粒，其中载体颗粒通过将芯颗粒与热塑性树脂颗粒干混合直到树脂颗粒粘附到芯颗粒上来制备。 将核心和树脂颗粒的混合物加热至320°F至650°F，持续20至120分钟，以使树脂颗粒融化并熔合至核心颗粒。 显影剂混合物用于显影静电潜像。

公开(公告)号：US4355886A

公开(公告)日：1982-10-26

申请号：US149379

申请日：1980-05-13

申请人： Steven R. Perez ,  Philip G. Horton ,  Jan M. Wlochowski

发明人： Steven R. Perez ,  Philip G. Horton ,  Jan M. Wlochowski

IPC分类号： G03G9/10 ,  G03G9/097 ,  G03G9/113 ,  G03G15/09 ,  G03G21/00 ,  G03G21/10

CPC分类号： G03G21/0047 ,  G03G2221/0005

摘要： An electrostatographic development and cleaning system employing electrically insulating carrier particles. The carrier particles comprise a core having magnetic or magnetically-attractable properties which is coated with a polyvinyl acetal. The coated carrier particles have negative triboelectric charging properties and are particularly useful in development systems employing negatively charged photoconductive surfaces. The carrier particles provide efficient removal of residual toner deposits from a photoreceptor surface after a copying operation.

摘要翻译： 一种使用电绝缘载体颗粒的静电显影和清洁系统。 载体颗粒包括具有磁性或磁吸引性质的芯，其涂覆有聚乙烯醇缩醛。 涂覆的载体颗粒具有负的摩擦带电性质，并且在使用带负电荷的光电导表面的显影体系中特别有用。 载体颗粒在复印操作之后提供从感光体表面有效除去残留的调色剂沉积物。

公开(公告)号：US4233387A

公开(公告)日：1980-11-11

申请号：US17229

申请日：1979-03-05

申请人： Joseph Mammino ,  Timothy F. Johnson ,  David W. Walters ,  Steven R. Perez

发明人： Joseph Mammino ,  Timothy F. Johnson ,  David W. Walters ,  Steven R. Perez

IPC分类号： G03G9/10 ,  G03G9/113 ,  B05D7/00

CPC分类号： G03G9/1134 ,  G03G9/1131 ,  Y10T428/2991

摘要： Electrostatographic coated carrier particles for use in the development of electrostatic latent images are provided by mixing carrier core materials with powdered thermoplastic resin particles having a size of between 0.1 micron and about 30 microns. The carrier core materials are mixed with the resin particles until the resin particles mechanically and/or electrostatically adhere to the core materials and the mixture is heated to a temperature of between 320.degree. F. and 650.degree. F. for between 120 minutes and 20 minutes so that the resin particles melt and fuse to the carrier core materials. The coated carrier particles are cooled, classified to the desired particle size, and mixed with finely-divided toner particles to form a developer mixture. The process is especially advantageous for coating carrier particles with resin materials having poor solubility characteristics.

摘要翻译： 通过将载体芯材料与尺寸为0.1微米至约30微米的粉末状热塑性树脂颗粒混合来提供用于显影静电潜像的静电涂覆载体颗粒。 载体芯材料与树脂颗粒混合，直到树脂颗粒机械和/或静电粘附到芯材上，并将混合物加热至320°F至650°F的温度，时间为120分钟至20分钟 使树脂颗粒熔化并熔合到载体芯材料上。 将涂覆的载体颗粒冷却，分级至所需的颗粒尺寸，并与细碎的调色剂颗粒混合以形成显影剂混合物。 该方法对于用具有差的溶解度特性的树脂材料涂覆载体颗粒是特别有利的。