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    Carrier for electrophotography and developer using the same
    2.
    发明公开
    Carrier for electrophotography and developer using the same 有权
    Trägerteilchenund Entwicklerfürdie Elektrophotographie

    公开(公告)号：EP1260874A1

    公开(公告)日：2002-11-27

    申请号：EP02011465.8

    申请日：2002-05-24

    申请人： Ricoh Company

    发明人： Suzuki, Kousuke ,  Mochizuki, Satoshi ,  Asahina, Yasuo ,  Umemura, Kazuhiko ,  Sugiura, Hideki ,  Masuda, Minoru ,  Tamura, Tomomi

    IPC分类号： G03G9/113

    CPC分类号： G03G9/1133 ,  G03G9/1136

    摘要： A carrier for electrophotographic developer comprising carrier particles, each carrier particle having at least one surface-coating layer of resin material, characterized by the surface-coating layer containing an acrylic resin and a silicone resin, the acrylic resin being in an amount of from 10 to 90 wt. % based on the total amount of resin coating ingredients. The carrier shows no accumulation of toner-spents, therefore can obtain a stable electric charge, and has no layer scraping in binder resin layer, therefore can obtain a stable electric resistance, hence occurs no deterioration of images reproduced, by using acrylic resin having high anti-abrasive and high surface energy, whereas it has strong adhesiveness and high fragility, in combination with use of a silicone resin having poor anti-abrasive and small adhesiveness but has low fragility, thus is hard to cause a toner spent and hard to integrate the spent constituents due to its low surface energy.

    摘要翻译： 包含载体颗粒的电子照相显影剂载体，每个载体颗粒具有至少一个树脂材料的表面涂层，其特征在于包含丙烯酸树脂和有机硅树脂的表面涂层，丙烯酸树脂的量为10 至90重量％ 基于树脂涂料成分的总量％。 载体不显示调色剂的积累，因此可以获得稳定的电荷，并且在粘合剂树脂层中没有层刮擦，因此可以获得稳定的电阻，因此通过使用具有高的丙烯酸树脂而不会再现图像的劣化 耐磨性和高表面能，而且具有强的粘合性和高脆性，结合使用具有差的抗磨损性和小粘合性但具有低脆性的硅树脂，因此难以使调色剂消耗并难以整合 由于其低表面能而使用过的成分。

    Negatively chargeable toner
    3.
    发明公开
    Negatively chargeable toner 有权
    Negativ aufladbarer调色剂

    公开(公告)号：EP1246021A1

    公开(公告)日：2002-10-02

    申请号：EP02006914.2

    申请日：2002-03-26

    申请人： Ricoh Company, Ltd.

    发明人： Masuda, Minoru ,  Mochizuki, Satoshi ,  Asahina, Yasuo ,  Umemura, Kazuhiko ,  Sugiura, Hideki ,  Suzuki, Kohsuke ,  Tamura, Tomomi

    IPC分类号： G03G9/097 ,  G03G9/08

    CPC分类号： G03G9/0812 ,  G03G9/09783

    摘要： A toner including a binder resin, a colorant, and a product of an iron compound containing an aromatic hydroxylcarboxylic acid as a ligand and represented by the formula (I) described in the specification, wherein the product has such a characteristic that a filtrate obtained by filtering a dispersion of 10 g of the product dispersed in 200 ml of purified water provides an electric conductivity of not greater than 600 µS/cm.

    摘要翻译： 一种调色剂，其包含粘合剂树脂，着色剂和含有芳族羟基羧酸作为配体并由本说明书中描述的式（I）表示的铁化合物的产物，其中该产物具有以下特征：将由 过滤分散在200ml纯水中的10g产物的分散液，提供不大于600μS/ cm的电导率。

    External additive for toner for electrophotography, toner for electrophotography, double-component developer for electrophotography, image forming process using the toner, and image-forming apparatus using the toner
    8.
    发明公开
    External additive for toner for electrophotography, toner for electrophotography, double-component developer for electrophotography, image forming process using the toner, and image-forming apparatus using the toner 有权
    外部Additif用于电子照相调色剂; 调色剂用于显影静电图像的双组分显影剂，图像形成方法和图像形成装置

    公开(公告)号：EP1383010A1

    公开(公告)日：2004-01-21

    申请号：EP03016001.4

    申请日：2003-07-14

    申请人： Ricoh Company Ltd.

    发明人： Sugiura, Hideki ,  Mochizuki, Satoshi ,  Umemura, Kazuhiko ,  Nakayama, Shinya ,  Asahina, Yasuo

    IPC分类号： G03G9/097 ,  C09C1/30 ,  C01B33/18

    CPC分类号： B82Y30/00 ,  C01G9/00 ,  C01P2004/62 ,  C01P2004/64 ,  C09C1/043 ,  C09C1/3045 ,  C09C1/3081 ,  C09C3/12 ,  G03G9/09716 ,  G03G9/09725

    摘要： An external additive for a toner for electrophotography which contains oxide fine particles which contain silicon, in which the oxide fine particles have a primary particle diameter of 30nm to 300nm in number average, a standard deviation σ of a particle size distribution of the primary particle diameter satisfies a relation of: R/4 ≤ σ ≤ R, in which the R expresses the primary particle diameter,
    the oxide fine particles are substantially spherical having a circularity SF1 defined as equation (1) of 100 to 130 and a circularity SF2 defined as equation (2) of 100 to 125; SF1 = (L 2 /A) ×(π/4) × 100 SF2 = (P 2 /A) × (1/4π) × 100 in the equations, "L" expresses the absolute maximum length of the oxide fine particles; "A" expresses a projected area of the oxide fine particles; and "P" expresses a maximum perimeter of the oxide fine particles.

    摘要翻译： 外部添加剂以用于电照相的调色剂其中含有氧化物微粒而含有有机硅，其中该氧化物微粒具有在数平均为30纳米到300纳米的一次粒径，一次粒径的粒径分布的标准偏差西格玛 SATIS FIES的关系：R / 4≤-Σ≤R，其中将R快车的一次粒径，氧化物微粒基本上是球形的具有定义为方程的圆形度SF1（1）的100〜130和圆形SF2定义为 等式（2）的100至125; <= DF NUM “式（1）”> SF1 =（L <2> / A）×（π/ 4）×100 <= DF NUM “式（2），”> SF2 =（P < 2> / A）×（1/4 PI）×100 在这些等式中， “L” 表示训练氧化物微粒的绝对最大长度; “A”快车氧化物微粒的投影面积; 和“P”快车氧化物微粒的最大周长。

    Toner, developer,image forming apparatus and image forming method
    9.
    发明公开
    Toner, developer,image forming apparatus and image forming method 有权
    TONER，TONERGELADENERBEHÄLTER，BILDERZEUGUNGSVORRICHTUNG UND VERFAHREN ZUR BILDERZEUGUNG

    公开(公告)号：EP2423755A1

    公开(公告)日：2012-02-29

    申请号：EP11189963.9

    申请日：2004-09-16

    申请人： Ricoh Company, Ltd.

    发明人： Nakayama, Shinya ,  Sugiura, Hideki ,  Emoto, Shigeru ,  Tomita, Masami ,  Honda, Takahiro ,  Yagi, Shinichiro ,  Suzuki, Tomomi ,  Yamada, Hiroshi ,  Nanya, Toshiki ,  Higuchi, Hiroto ,  Sasaki, Fumihiro ,  Mochizuki, Satoshi ,  Shimota, Naohito ,  Uchinokura, Osamu ,  Ichikawa, Tomoyuki ,  Awamura, Junichi ,  Iwamoto, Yasuaki ,  Asahina, Yasuo ,  Kotsugai, Akihiro ,  Ishii, Masayuki ,  Nakajima, Hisashi ,  Utsumi, Tomoko ,  Sakata, Koichi

    IPC分类号： G03G9/087 ,  G03G9/08

    CPC分类号： G03G9/0804 ,  G03G9/0819 ,  G03G9/0821 ,  G03G9/0827 ,  G03G9/08708 ,  G03G9/08711 ,  G03G9/08755 ,  G03G9/08797

    摘要： An object of the invention is to provide: a toner such that the toner corresponds to a low-temperature fixing system, is excellent in both of offset resistance and anti-heat preservability and especially, even after a large number of copies are to be produced over a long period, the toner does not aggregate to each other, deterioration of flowability, transferability, and fixing ability is extremely rare, the toner makes it possible to form stable images on any transferring medium without transfer errors and with good reproducibility, and further does not contaminate fixing unit and images; or the like. Therefore, provided is a toner comprising:
    a toner material; and
    resin fine particles on a surface of the toner;
    wherein the toner has a glass-transition temperature, Tg, of from 30°C to 46°C, the resin fine particles have a glass-transition temperature, Tg, of from 50°C to 70°C, and
    wherein, when the toner has been masticated with Labo Plastomill, the toner has a 1/2 flown-out temperature of from 95°C to 120°C, and before the mastication of the toner, the toner has a 1/2 flown-out temperature of from 120°C to 145°C.

    摘要翻译： 本发明的目的是提供：使调色剂对应于低温定影系统的调色剂，在耐偏移性和耐热保存性方面都是优异的，特别是即使在制造大量的复印品之后 在长时间内，调色剂不会彼此聚集，流动性，转印性和定影能力的劣化极少，调色剂使得可以在任何转印介质上形成稳定的图像，而没有转印误差和良好的再现性，并且进一步 不会污染定影单元和图像; 或类似物。 因此，提供了一种调色剂，包括：调色剂材料; 和调色剂表面上的树脂细颗粒; 其中所述调色剂的玻璃化转变温度Tg为30℃至46℃，所述树脂细颗粒的玻璃化转变温度Tg为50℃至70℃，并且其中，当 调色剂已经用Labo Plastomill进行了咀嚼，调色剂具有95℃至120℃的1/2流出温度，并且在调色剂的咀嚼之前，调色剂具有1/2的流出温度 120°C至145°C。