Carrier for developing electrostatic latent image, electrostatic latent
image developer, method for forming image and image forming apparatus
    2.
    发明授权
    Carrier for developing electrostatic latent image, electrostatic latent image developer, method for forming image and image forming apparatus 失效
    用于显影静电潜像的载体,静电潜像显影剂,用于形成图像的方法和图像形成装置

    公开(公告)号:US5821022A

    公开(公告)日:1998-10-13

    申请号:US858504

    申请日:1997-05-19

    摘要: A carrier for developing an electrostatic latent image comprising a core material coated with a resin layer, wherein the F/N ratio of the surface of the resin layer ranges from 1 to 20. It is desirable that the resin layer include resin particles containing a nitrogen atom, that the average particle diameter of the nitrogen-atom-containing resin be in a range from 0.1 to 2 .mu.m, that the thickness of the resin layer be in a range from 0.1 to 10 .mu.m, that the resin layer include an electroconductive material which is in a condition to be dispersed in the resin layer, that the electroconductive material be made of carbon black, and that the average particle diameter of the carrier for developing an electrostatic latent image be in a range from 30 to 150 .mu.m. The carrier for developing an electrostatic latent image, which is long-lived, provided with a charging capability unchanged over time, and is capable of effectively preventing fogging are provided.

    摘要翻译: 一种用于显影静电潜像的载体,包括涂覆有树脂层的芯材料,其中树脂层的表面的F / N比为1至20。希望树脂层包括含有氮的树脂颗粒 原子,含氮原子的树脂的平均粒径为0.1〜2μm,树脂层的厚度为0.1〜10μm,树脂层的厚度为 导电材料为分散在树脂层中的导电材料,导电材料由炭黑制成,静电潜像显影用载体的平均粒径为30〜150μm 。 提供长寿命的静电潜像显影载体,具有随时间不变的充电能力,并且能够有效地防止起雾。

    Carrier for developer of electrostatic latent image, method for making
said carrier
    4.
    发明授权
    Carrier for developer of electrostatic latent image, method for making said carrier 失效
    用于静电潜像显影剂的载体,用于制造所述载体的方法

    公开(公告)号:US5849448A

    公开(公告)日:1998-12-15

    申请号:US818454

    申请日:1997-03-17

    IPC分类号: G03G9/10 G03G9/113

    摘要: The present invention provides a carrier for developer of an electrostatic latent image and related technologies. The carrier is excellent in the ability to impart charge suitably and stably to toner and has a structure durable enough to maintain the ability for a long period of time such that the structure can prevent the toner from being adhered onto the carrier surface for a long period of time. The carrier comprises a core covered with a resin coating layer containing resin particles and an electroconductive fine powder in the form of a dispersion in a matrix resin. The carrier can be produced by a method comprising the steps of preparing a coating solution by placing materials in a solvent which can dissolve the matrix resin, but cannot dissolve the resin particles, dispersing the particles of the resin, applying the solution to a core and removing the solvent. A high-quality image can be formed by use of the developer comprising the carrier and the toner.

    摘要翻译: 本发明提供了一种用于静电潜像显影剂和相关技术的载体。 该载体对赋予调色剂的适当且稳定的赋予能力优异,具有耐久性足以维持长时间能力的结构,使得结构能够防止调色剂长时间粘附在载体表面上 的时间。 载体包括被包含树脂颗粒的树脂涂层和基质树脂中分散体形式的导电细粉末覆盖的芯。 载体可以通过以下方法制备:包括以下步骤:通过将材料放置在可溶解基体树脂的溶剂中而不溶解树脂颗粒,分散树脂颗粒,将溶液施加到芯上的步骤来制备涂布溶液, 除去溶剂。 可以通过使用包含载体和调色剂的显影剂来形成高质量的图像。

    Electrophotographic toner, electrophotographic developer and process for forming image
    5.
    发明授权
    Electrophotographic toner, electrophotographic developer and process for forming image 有权
    电子照相色调剂,电子照相显影剂和形成图像的方法

    公开(公告)号:US06613491B2

    公开(公告)日:2003-09-02

    申请号:US10003088

    申请日:2001-12-06

    IPC分类号: G03G908

    摘要: In an electrophotographic developer and a process for forming an image, an electrophotographic toner used therein contains spherical toner parent particles and two or more kinds of inorganic particles having different average particle diameters, at least one kind of the inorganic fine particles being spherical particles having an average primary particle diameter of about 80 to 300 nm, and the inorganic particles containing the spherical particles being attached to the toner parent particles to provide a structure satisfying the following conditions (1) and (2): (1) the spherical particles have a coverage on a surface of the toner parent particles of about 20% or more; and (2) a proportion of the inorganic particles that are separated from the toner parent particles upon dispersing the toner in an aqueous solution is about 35% or less of a total addition amount of the inorganic particles.

    摘要翻译: 在电子照相显影剂和形成图像的方法中,其中使用的电子照相调色剂含有球形调色剂母体颗粒和两种或更多种具有不同平均粒径的无机颗粒,至少一种无机细颗粒是具有 平均一次粒径为约80〜300nm,将含有球状粒子的无机粒子附着在调色剂母粒上,得到满足下述条件(1)和(2)的结构:(1)球状粒子具有 调色剂母粒子表面上的覆盖率为约20%以上; 和(2)将调色剂分散在水溶液中时与调色剂母体颗粒分离的无机颗粒的比例为无机颗粒总添加量的约35%以下。

    Electrophotographic developer and process for forming image
    6.
    发明授权
    Electrophotographic developer and process for forming image 失效
    电子照相显影剂和形成图像的方法

    公开(公告)号:US06517985B2

    公开(公告)日:2003-02-11

    申请号:US10000302

    申请日:2001-12-04

    IPC分类号: G03G908

    摘要: An electrophotographic developer is provided that attains improvement in reliability by improvement in cleaning property and reduction in wear of a photoreceptor in a well-balanced manner without impairing high transfer efficiency and high image quality of a spherical toner. The electrophotographic developer contains a toner and a carrier, the toner containing spherical colored particles having an average shape factor (ML2/A) of about from 100 to 135 and irregular-shaped non-colored particles having a volume average particle diameter of about from 1 to 10 &mgr;m, a charge distribution of the developer having a peak value Q/Ma ascribable to the spherical colored particles and a peak value Q/Mb ascribable to the irregular-shaped non-colored particles, and the peak value Q/Ma and the peak value Q/Mb satisfying both the following formulae (1) and (2): 20 &mgr;C/g≦|Q/Ma|≦85 &mgr;C/g  (1) −0.7 Q/Ma≦Q/Mb≦0.5 Q/Ma  (2).

    摘要翻译: 提供了一种电子照相显影剂,其通过改善清洁性能并且以良好平衡的方式降低感光体的磨损而不损害球形调色剂的高转印效率和高图像质量而提高可靠性。 电子照相显影剂含有调色剂和载体,调色剂含有平均形状因子(ML2 / A)为约100至135的球形着色颗粒和体积平均粒径为约1的不规则形状的无色颗粒 至10μm,具有归属于球形着色颗粒的峰值Q / Ma的显影剂的电荷分布和归因于不规则形状的无色颗粒的峰值Q / Mb,峰值Q / Ma和 满足下列公式(1)和(2)的峰值Q / Mb:

    Toner for developing electrostatic image and image formation process
using the toner
    8.
    发明授权
    Toner for developing electrostatic image and image formation process using the toner 失效
    用于显影静电图像的调色剂和使用调色剂的成像方法

    公开(公告)号:US5643705A

    公开(公告)日:1997-07-01

    申请号:US540025

    申请日:1995-09-28

    CPC分类号: G03G9/08782

    摘要: The present invention provides a toner for developing an electrostatic image which inhibits the filming of a wax on the development sleeve and photoreceptor to obtain a stable image. The present invention also provides a toner for developing an electrostatic image which provides a practically sufficiently wide fixing latitude. The present invention further provides an image formation process for forming a copied image with an excellent dot reproducibility, fine line reproducibility and gradation. A novel toner for developing an electrostatic image is provided, which comprises a particulate toner containing a polyolefin wax and a modified polyolefin wax, wherein the average diameter of wax particles dispersed in the particulate toner is not more than 0.5 .mu.m and the amount of wax exposed on the surface of said particulate toner is from 40 to 65% by weight. The particulate toner may comprise a finely divided magnetic powder in an amount of from 30 to 70% by weight. The content of modified polyolefin wax in the particulate toner is preferably greater than that of polyolefin wax.

    摘要翻译: 本发明提供一种用于显影静电图像的调色剂,其抑制显影套筒和感光体上的蜡的成膜以获得稳定的图像。 本发明还提供一种用于显影静电图像的调色剂,其提供了实际上足够宽的固定宽度。 本发明还提供了一种用于形成具有优异的点再现性,细线再现性和灰度的复印图像的图像形成处理。 提供了用于显影静电图像的新型调色剂,其包含含有聚烯烃蜡和改性聚烯烃蜡的颗粒调色剂,其中分散在颗粒调色剂中的蜡颗粒的平均直径不大于0.5μm,蜡的量 在所述颗粒调色剂的表面上暴露的重量比为40-65%。 颗粒调色剂可以包含30至70重量%的细碎磁粉。 颗粒调色剂中改性聚烯烃蜡的含量优选大于聚烯烃蜡的含量。

    Electrophotographic toner and method for forming images
    10.
    发明授权
    Electrophotographic toner and method for forming images 失效
    电子照相调色剂和形成图像的方法

    公开(公告)号:US5908726A

    公开(公告)日:1999-06-01

    申请号:US934855

    申请日:1997-09-22

    摘要: An electrophotographic toner includes a binder resin including a linear polyester such as a polyester formed by condensation of an ethylene oxide adduct of a bisphenole A with a terephthalic acid, and a non-linear polyester such as a polyester formed by condensation of a mixture of an ethylene oxide adduct of a bisphenole A and a glycerin with a terephthalic acid; and, as a magnetic substance, a polyhedral magnetite of not more facets than a hexacosahedron and not less facets than a decahedron. The toner has an excellent fixing property at low temperature, an anti-offset property and a wide fixing latitude.

    摘要翻译: 电子照相调色剂包括粘合剂树脂,其包括线性聚酯,例如通过双酚A的环氧乙烷加成物与对苯二甲酸的缩合形成的聚酯,以及非线性聚酯,例如通过将 双酚A和甘油与对苯二甲酸的环氧乙烷加成物; 并且作为磁性物质,不如六面体具有更多小面的多面磁体,并且不如十面体那样小。 该调色剂在低温下具有优异的定影性能,抗偏移性和宽的固定宽度。