Carrier for developer
    1.
    发明授权
    Carrier for developer 失效
    开发商承运人

    公开(公告)号:US5110703A

    公开(公告)日:1992-05-05

    申请号:US496138

    申请日:1990-03-19

    IPC分类号: G03G9/10

    CPC分类号: G03G9/10

    摘要: A carrier for use in developing an electrostatic or magnetic latent image in electrophotography, electrostatic recording, electrostatic printing or the like, which carrier is produced by atomizing a molten mixture of a magnetic powder and a binder resin containing a polyolefin and a polyolefin having a functional group. The polyolefin having a functional group is present in an amount ranging from about 50% by weight or less based on the total weight of the binder resin.

    摘要翻译: 用于显影电子照相,静电记录,静电印刷等中的静电或磁潜像的载体,该载体通过使包含聚烯烃和具有官能团的聚烯烃的磁性粉末和粘合剂树脂的熔融混合物雾化来制造 组。 具有官能团的聚烯烃的存在量为约50重量%以下,基于粘合剂树脂的总重量。

    Electrophotographic developer carrier particles coated with binder resin
    2.
    发明授权
    Electrophotographic developer carrier particles coated with binder resin 失效
    用粘合剂树脂涂覆的电子照相显影剂载体颗粒

    公开(公告)号:US4965160A

    公开(公告)日:1990-10-23

    申请号:US412567

    申请日:1989-09-25

    IPC分类号: G03G9/107 G03G9/113

    摘要: A developer carrier is disclosed, which has a core containing a binder resin and a magnetic powder, and a surface layer thereon containing a compound having a lower critical surface tension than the binder resin. This developer when used in a magnetic brush development process provides superior charge characteristics, resistance to environmental changes, and extended life. In another aspect, the invention relates to a developer carrier produced by a process of (a) melting a carrier composition containing a binder resin, a magnetic powder and a compound having a lower critical surface tension than the binder resin, (b) spraying the molten carrier composition to form droplets, and (c) cooling the droplets with a gas stream having a temperature lower than the melting point of the composition to form substantially spherical particles having a high surface smoothness.

    摘要翻译: 公开了一种显影剂载体,其具有含有粘合剂树脂和磁性粉末的芯,以及其上含有比粘合剂树脂具有较低临界表面张力的化合物的表面层。 这种显影剂用于磁刷显影工艺时,具有优异的电荷特性,耐环境变化,延长使用寿命。 另一方面,本发明涉及通过以下方法生产的显影剂载体:(a)熔化含有粘合剂树脂,磁性粉末和具有比粘合剂树脂低的临界表面张力的化合物的载体组合物,(b)将 熔融载体组合物以形成液滴,以及(c)用温度低于组合物熔点的气流冷却液滴,以形成具有高表面平滑度的基本上球形的颗粒。

    Developer carrier and process for producing the same
    6.
    发明授权
    Developer carrier and process for producing the same 失效
    开发者载体及其制造方法

    公开(公告)号:US4868083A

    公开(公告)日:1989-09-19

    申请号:US77727

    申请日:1987-07-27

    IPC分类号: G03G9/10

    CPC分类号: G03G9/10

    摘要: A process for producing a developer carrier is disclosed, which comprises heating a carrier composition containing a resin, magnetic particles and a compound having a lower critical surface energy than the resin, to produce a carrier particle having a higher surface concentration of the compound having a lower critical surface energy. A developer carrier having an average particle size of at least about 50 .mu.m and containing a fluorine-containing compound and fine magnetic particles dispersed in a binder resin is also disclosed. The developer carriers according to the invention when used in magnetic brush development provide superior charge generation, extended life and improved image reproduction.

    摘要翻译: 公开了一种制造显影剂载体的方法,其包括加热含有树脂,磁性颗粒和具有比树脂低的临界表面能的化合物的载体组合物,以产生具有较高表面能的化合物的载体颗粒, 降低临界表面能。 还公开了具有至少约50μm的平均粒度并含有含氟化合物和分散在粘合剂树脂中的细小磁性颗粒的显影剂载体。 当用于磁刷显影时,根据本发明的显影剂载体提供优异的电荷产生,延长的寿命和改进的图像再现性。

    Toners, process for the preparation thereof, developers and method of forming images
    9.
    发明授权
    Toners, process for the preparation thereof, developers and method of forming images 失效
    调色剂,其制备方法,显影剂和形成图像的方法

    公开(公告)号:US06268099B1

    公开(公告)日:2001-07-31

    申请号:US08861738

    申请日:1997-05-22

    IPC分类号: G03G9097

    摘要: Disclosed herein are a toner comprising a binder resin, a coloring agent, and, as a lubricant, a polyethylene wax having a penetration of 5 to 12 dmm and a melt viscosity of less than or equal to 1.5 at 130° C., a process for the preparation thereof, a developer using the toner, and a method of forming images using the toner. According to the present invention, incomplete images in the transfer process can be prevented; excellent flowability is provided and the blocking phenomenon can be prevented; the transfer process can be carried out with less electric consumption. The offset resistance is also good, and the releasability is effectively exhibited at lower temperatures.

    摘要翻译: 本文公开了一种调色剂,其包含粘合剂树脂,着色剂和作为润滑剂的在130℃下具有5至12dmm的渗透性和小于或等于1.5的熔体粘度的聚乙烯蜡, 为了制备它们,使用调色剂的显影剂,以及使用调色剂形成图像的方法。 根据本发明,可以防止转印过程中的不完整图像; 提供优异的流动性并且可以防止阻塞现象; 转移过程可以用较少的电力消耗进行。 耐偏移性也良好,并且在较低温度下有效显示脱模性。

    Toner for developing electrostatic latent images
    10.
    发明授权
    Toner for developing electrostatic latent images 失效
    用于显影静电潜像的调色剂

    公开(公告)号:US5928825A

    公开(公告)日:1999-07-27

    申请号:US668447

    申请日:1996-06-21

    IPC分类号: G03G9/087 G03G9/097

    CPC分类号: G03G9/08782

    摘要: A toner for developing electrostatic latent images containing a binder resin, a colorant, and a lubricant, wherein the lubricant comprises a modified polyethylene wax which is obtained by homopolymerizing ethylene or copolymerizing ethylene and an .alpha.-olefin having 3 to 10 carbon atoms in the presence of a metallocene catalyst and modifying the resulting homo- or copolymer by grafting thereto a styrene monomer and/or an unsaturated carboxylic acid monomer, the lubricant having a hexane extraction of not more than 65% by weight. The toner exhibits release properties at a lower temperature and thereby has satisfactory anti-offset properties without impairing powder fluidity and anti-blocking properties. It provides a toner image resistant against scratches by a peeling claw of a fixing roll part and against rub-of.

    摘要翻译: 用于显影含有粘合剂树脂,着色剂和润滑剂的静电潜像的调色剂,其中所述润滑剂包含改性聚乙烯蜡,其通过在乙烯存在下均聚乙烯或共聚乙烯和具有3至10个碳原子的α-烯烃而获得 的茂金属催化剂,并通过与苯乙烯单体和/或不饱和羧酸单体接枝来改性所得到的均聚物或共聚物,所述润滑剂的己烷萃取不超过65重量%。 调色剂在较低温度下具有脱模性能,因此具有令人满意的抗粘合性能,而不损害粉末流动性和防粘连性。 它提供了抵抗由定影辊部分的剥离爪划伤并抵抗擦伤的调色剂图像。