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    Toner, image forming apparatus, image forming method and process cartridge
    3.
    发明公开
    Toner, image forming apparatus, image forming method and process cartridge 有权
    Toner und Bilderzeugungsvorrichtung

    公开(公告)号：EP2051142A1

    公开(公告)日：2009-04-22

    申请号：EP08166926.9

    申请日：2008-10-17

    申请人： Ricoh Company, Ltd.

    发明人： Nakayama, Shinya ,  Kotsugai, Akihiro ,  Sabu, Akiyoshi

    IPC分类号： G03G9/087

    CPC分类号： G03G9/08755 ,  G03G9/08711 ,  G03G9/08775 ,  G03G9/08782 ,  G03G9/09783

    摘要： An image forming apparatus including: a latent electrostatic image bearing member, a charging unit, an exposing unit, a developing unit, a transfer unit, and a fixing unit, wherein the toner contains at least a binder resin and a colorant, the binder resin contains a polyester resin obtained by polycondensation of an alcohol component with a carboxylic acid component containing a rosin compound, the amount of the rosin compound contained in the carboxylic acid component is 5% by mass or more based on the total mass of the alcohol component and carboxylic acid component, and the amount of an abietic acid contained in the toner is 1% by mass or less.

    摘要翻译： 一种图像形成装置，包括：静电潜像承载部件，充电单元，曝光单元，显影单元，转印单元和定影单元，其中调色剂至少含有粘合剂树脂和着色剂，粘合剂树脂 含有通过醇成分与含有松香化合物的羧酸成分缩聚得到的聚酯树脂，羧酸成分中所含的松香化合物的量相对于醇成分的总质量为5质量％以上， 羧酸成分，调色剂中所含的松香酸的量为1质量％以下。

    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, development agent, and image forming apparatus using the same
    9.
    发明公开
    Toner, development agent, and image forming apparatus using the same 有权
    Toner，Entwicklungsmittel und Bilderzeugungsvorrichtung damit

    公开(公告)号：EP2607955A1

    公开(公告)日：2013-06-26

    申请号：EP12198258.1

    申请日：2012-12-19

    申请人： Ricoh Company, Ltd.

    发明人： Sakashita, Shingo ,  Yamashita, Hiroshi ,  Yamada, Masahide ,  Nakayama, Shinya ,  Yamamoto, Atsushi ,  Nakajima, Yukiko

    IPC分类号： G03G9/08 ,  G03G9/087 ,  G03G9/097

    CPC分类号： G03G9/08 ,  G03G9/0821 ,  G03G9/08755 ,  G03G9/08764 ,  G03G9/08782 ,  G03G9/08788 ,  G03G9/08793 ,  G03G9/08795 ,  G03G9/08797 ,  G03G9/097

    摘要： A toner includes a binder resin, a coloring agent, and a releasing agent containing two or more kinds of alkyl monoester compounds having a different number of carbon atoms in a range of from 30 to 50 carbon atoms. The toner has a crystallinity of 10 % or more as measured by x-ray diffraction and/or the binder resin is a crystalline resin in an amount of 50 % by weight or more of the binder resin. The two or more kinds of alkyl monoester compounds include a component A accounting for the largest amount ranging from 30% by weight to less than 50% by weight of the releasing agent and a component B accounting for the second largest amount ranging from 10% by weight to less than 50% by weight of the releasing agent.

    摘要翻译： 调色剂包括粘合剂树脂，着色剂和含有碳原子数为30至50个碳原子数不同的两种或更多种烷基单酯化合物的脱模剂。 调色剂通过x射线衍射测得的结晶度为10％以上，和/或粘合剂树脂为粘合剂树脂的50重量％以上的结晶性树脂。 两种或更多种烷基单酯化合物包括占脱模剂重量的30重量％至小于50重量％的最大量的组分A和占第二大量的组分B的10重量％ 重量至小于脱模剂重量的50％。

    Toner, developer,image forming apparatus and image forming method
    10.
    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。