知搜-全球专利检索

  1. Login
  2. Sign Up

Search Results

14 records (took 0.017 seconds)

    Toner for developing latent electrostatic images
    1.
    发明授权
    Toner for developing latent electrostatic images 失效
    用于显影静电潜像的调色剂

    公开(公告)号：US4950573A

    公开(公告)日：1990-08-21

    申请号：US121483

    申请日：1987-11-17

    Applicant: Kimitoshi Yamaguchi ,  Kazuhiko Umemura ,  Yoshihiro Nomura

    Inventor： Kimitoshi Yamaguchi ,  Kazuhiko Umemura ,  Yoshihiro Nomura

    IPC: G03G9/08 ,  G03G9/087

    CPC classification number: G03G9/0825 ,  G03G9/08751 ,  G03G9/08773

    Abstract: A toner for developing latent electrostatic images is disclosed, which comprises (a) thermofusible base particles A having a softening point of 80.degree. C. or less, a flow starting temperature of 110.degree. C. or less, and an average particle size of 5 to 25 .mu.m, and (b) small particles B comprising as the main component an organic polymeric material having a softening point at least 5.degree. C. higher than the softening point of the base particles A and no practical softening point, and an average particle size ranging from 0.1 .mu.m or more, but not more than 1/4 of the average particle size of the base particles A, which small particles B are embedded in the surface of the base particles A so as to cover the surface of the base particles A to a depth of less than the particle size of the small particles B.

    Abstract translation: 公开了用于显影静电图像的调色剂，其包含（a）软化点为80℃或更低，流动起始温度为110℃或更低，平均粒度为5的热熔性基础颗粒A 至（b）作为主要成分的小粒子B，其含有软化点比基础粒子A的软化点高5℃以上的有机聚合物，没有实用的软化点，平均粒径 粒径为0.1μm以上且不超过基体颗粒A的平均粒径的1/4，该颗粒B被嵌入基体颗粒A的表面，以覆盖基体颗粒A的表面 基础颗粒A的深度小于小颗粒B的粒度。

    Toner for forming electrophotographic image and developers using the same
    5.
    发明授权
    Toner for forming electrophotographic image and developers using the same 失效
    用于形成电子照相图像的调色剂和使用它的显影剂

    公开(公告)号：US5705306A

    公开(公告)日：1998-01-06

    申请号：US645126

    申请日：1996-05-13

    Applicant: Ryuji Kitani ,  Meizo Shirose ,  Tatsuya Nagase ,  Keiko Ujihara ,  Michiaki Ishikawa

    Inventor： Ryuji Kitani ,  Meizo Shirose ,  Tatsuya Nagase ,  Keiko Ujihara ,  Michiaki Ishikawa

    IPC: G03G9/087 ,  G03G9/09 ,  G03G9/097 ,  G03G9/113

    CPC classification number: G03G9/09 ,  G03G9/08751 ,  G03G9/09708 ,  G03G9/1133

    Abstract: A toner for forming an electrophotographic image is disclosed. The toner comprises (1) colored particles comprising a resin and a colorant, (2) fine resin particles comprising a polymer formed by condensation of melamine and formaldehyde, and have a volume average diameter of 0.01 .mu.m to 1.0 .mu.m, and (3) fine particles of an inorganic material (I) having a volume average diameter of 0.01 .mu.m to 0.20 .mu.m and a standard deviation of distribution of the volume average diameter G satisfying the condition of 10.ltoreq..sigma..ltoreq.30. It is particularly preferred that the toner is used as a tow componet developer together with a negatively chargeable carrier which comprises (1) magnetic core particles each coated with a coating layer comprising a mixture of homopolymer of an alicyclic methacrylate monomer and a homopolymer of an acyclic methacrylate monomer, or a copolymer of an alicyclic methacrylate monomer and an acyclic methacrylate monomer, and (2) a fine particles of an inorganic material (II).

    Abstract translation: 公开了一种用于形成电子照相图像的调色剂。 调色剂包括（1）包含树脂和着色剂的着色颗粒，（2）包含由三聚氰胺和甲醛缩合形成的聚合物的细树脂颗粒，体积平均直径为0.01μm至1.0μm，和（3 ）体积平均直径为0.01μm至0.20μm的无机材料（I）的细颗粒和满足条件为10≤Δ≤30的体积平均直径G的分布的标准偏差。 特别优选的是，调色剂与负电荷载体一起用作丝束组分显影剂，其包含（1）各自涂覆有包含脂环族甲基丙烯酸酯单体的均聚物和非环状的均聚物的混合物的涂层的磁芯颗粒 甲基丙烯酸酯单体或脂环族甲基丙烯酸酯单体和无环状甲基丙烯酸酯单体的共聚物，（2）无机材料（II）的微粒。

    Electrophotographic toner
    6.
    发明授权
    Electrophotographic toner 有权
    电子照相墨粉

    公开(公告)号：US07723001B2

    公开(公告)日：2010-05-25

    申请号：US11878214

    申请日：2007-07-23

    Applicant: Sang-woo Kim

    Inventor： Sang-woo Kim

    IPC: G03G9/00

    CPC classification number: G03G9/09725 ,  G03G9/08728 ,  G03G9/08751 ,  G03G9/09708 ,  G03G9/09716 ,  G03G9/09733

    Abstract: An electrophotographic toner includes toner parent particles containing a binder resin, a colorant and a charge control agent; and an external additive added to the surface of the toner parent particles. The toner further includes positively chargeable silica and polymer beads in addition to large particle diameter silica, small particle diameter silica and titanium oxides. Thus, the toner can maintain its charge quantity and distribution stably even during environmental changes and after long image printing times, thereby preventing the contamination of the non-image part and the filming.

    Abstract translation: 电子照相调色剂包括含有粘合剂树脂，着色剂和电荷控制剂的调色剂母体颗粒; 以及添加到调色剂母体颗粒表面的外部添加剂。 除了大粒径二氧化硅，小粒径二氧化硅和氧化钛之外，调色剂还包括可带正电的二氧化硅和聚合物珠。 因此，即使在环境变化和长时间的图像打印时间后，调色剂也可以保持其电荷量和分布，从而防止非图像部分的污染和成膜。

    Electrophotographic toner
    7.
    发明申请
    Electrophotographic toner 有权
    电子照相墨粉

    公开(公告)号：US20080153024A1

    公开(公告)日：2008-06-26

    申请号：US11878214

    申请日：2007-07-23

    Applicant: Sang-woo Kim

    Inventor： Sang-woo Kim

    IPC: G03G9/00

    CPC classification number: G03G9/09725 ,  G03G9/08728 ,  G03G9/08751 ,  G03G9/09708 ,  G03G9/09716 ,  G03G9/09733

    Abstract: An electrophotographic toner includes toner parent particles containing a binder resin, a colorant and a charge control agent; and an external additive added to the surface of the toner parent particles. The toner further includes positively chargeable silica and polymer beads in addition to large particle diameter silica, small particle diameter silica and titanium oxides. Thus, the toner can maintain its charge quantity and distribution stably even during environmental changes and after long image printing times, thereby preventing the contamination of the non-image part and the filming.

    Abstract translation: 电子照相调色剂包括含有粘合剂树脂，着色剂和电荷控制剂的调色剂母体颗粒; 以及添加到调色剂母体颗粒表面的外部添加剂。 除了大粒径二氧化硅，小粒径二氧化硅和氧化钛之外，调色剂还包括可带正电的二氧化硅和聚合物珠。 因此，即使在环境变化和长时间的图像打印时间后，调色剂也可以保持其电荷量和分布，从而防止非图像部分的污染和成膜。

    Electrophotographic developing agent
    8.
    发明申请
    Electrophotographic developing agent 审中-公开
    电子照相显影剂

    公开(公告)号：US20060063085A1

    公开(公告)日：2006-03-23

    申请号：US11145952

    申请日：2005-06-07

    Applicant: Duck-hee Lee ,  Sang-deok Kim ,  Seok-hoon Choi

    Inventor： Duck-hee Lee ,  Sang-deok Kim ,  Seok-hoon Choi

    IPC: G03G9/08

    CPC classification number: G03G9/09716 ,  G03G9/0819 ,  G03G9/08711 ,  G03G9/08751 ,  G03G9/08768 ,  G03G9/08797 ,  G03G9/09708 ,  G03G9/09725

    Abstract: An electrophotographic developing agent is provided. The electrophotographic developing agent includes toner particles and an external additive. The toner particles include a binder resin, a colorant, and a charge control agent. The external additives which are added to the toner particles include a large-diameter silica having a primary average particle size of about 20 to about 200 nm, a small-diameter silica having a primary average particle size of about 5 to about 20 nm, a hydrophobic titanium oxide, and a polymer bead. The electrophotographic developing agent can maintain a stable charge and charge distribution of the toner over a long period due to the addition of the external additives. The external additives prevent the fogging and the image contamination in a cycle of a charging roller.

    Abstract translation: 提供电子照相显影剂。 电子照相显影剂包括调色剂颗粒和外部添加剂。 调色剂颗粒包括粘合剂树脂，着色剂和电荷控制剂。 添加到调色剂颗粒中的外部添加剂包括一次平均粒径为约20至约200nm的大直径二氧化硅，一次平均粒径为约5至约20nm的小直径二氧化硅， 疏水性氧化钛和聚合物珠粒。 电子照相显影剂可以通过添加外部添加剂长期保持调色剂的稳定的电荷和电荷分布。 外部添加剂防止充电辊周期中的起雾和图像污染。

Patent Agency Ranking