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    • 2. 发明授权
    • Toner and image forming method
    • 调色剂和成像方法
    • US07704661B2
    • 2010-04-27
    • US12563533
    • 2009-09-21
    • Naotaka IkedaShinya YachiKatsuyuki NonakaEmi WatanabeKoji AbeNobuhisa Abe
    • Naotaka IkedaShinya YachiKatsuyuki NonakaEmi WatanabeKoji AbeNobuhisa Abe
    • G03G9/08
    • G03G9/09725G03G9/0806G03G9/08711G03G9/09716
    • A toner is provided which has toner particles and a fine silica powder mixed by external addition to the toner particles. The toner has a weight average particle diameter of 4.0 to 9.0 μm. The fine silica powder is subjected to hydrophobic treatment with dimethylsilicone oil, and has, in particle size distribution based on volume, a peak at which cumulative frequency is largest, in the measurement range of 0.02 μm to 1,000.00 μm; the cumulative frequency of 0.10 μm to less than 1.00 μm being 7.0% or less, and, the fine silica powder fulfills the following conditions: 1) A+B≧93.0; 2) 0.45≦A/B≦6.00; and 3) the value of [(carbon content of the treated fine silica powder)/(BET specific surface area of fine silica powder before hydrophobic treatment)] is 0.030 or more to 0.055 or less.
    • 提供了一种调色剂,其具有通过外部添加到调色剂颗粒而混合的调色剂颗粒和二氧化硅微粉。 调色剂的重均粒径为4.0〜9.0μm。 用二甲基硅油对二氧化硅粉末进行疏水处理,在0.02〜1000.00μm的测定范围内,以体积分布为基准的累积频率最大的峰值, 0.10μm至小于1.00μm的累积频率为7.0%以下,二氧化硅微粉满足以下条件:1)A +B≥93.0; 2)0.45≦̸ A / B≦̸ 6.00; 3)[(二氧化硅微粉处理的碳含量)/(疏水处理前的二氧化硅微粉末的BET比表面积)]为0.030以上至0.055以下。
    • 4. 发明授权
    • Toner
    • 爽肤水
    • US08778581B2
    • 2014-07-15
    • US13578813
    • 2011-05-12
    • Katsuyuki NonakaYasuhiro HashimotoNaoya IsonoAkira SugiyamaYuhei Terui
    • Katsuyuki NonakaYasuhiro HashimotoNaoya IsonoAkira SugiyamaYuhei Terui
    • G03G9/097G03G9/08
    • G03G9/09733G03G9/0806G03G9/097
    • A toner is provided that exhibits a high long-term image stability even during high-speed printing and that also exhibits an excellent environmental stability. The toner comprises a binder resin, a colorant, and a nonionic surfactant, wherein the nonionic surfactant has an oxyethylene group (EO) and an oxypropylene group (PO) and has a ratio of the number of moles of the oxypropylene group to the number of moles of the oxyethylene group (PO/EO) of at least 0.01 and not more than 5.00; and when A (μg/g) is defined as a nonionic surfactant content on the surface of the toner that can be extracted by methanol from 1 g of the toner and B (m2/g) is defined as a theoretical specific surface area determined from a toner particle diameter distribution obtained by a precision particle diameter distribution analyzer that operates based on an aperture electrical resistance method, a ratio A/B is at least 100 μg/m2 and not more than 9000 μg/m2.
    • 提供即使在高速印刷期间也表现出高的长期图像稳定性并且也表现出优异的环境稳定性的调色剂。 调色剂包括粘合剂树脂,着色剂和非离子表面活性剂,其中非离子表面活性剂具有氧化乙烯基(EO)和氧化亚丙基(PO),并且氧化丙烯基的摩尔数与 氧乙烯基(PO / EO)的摩尔数为至少0.01且不大于5.00; 并且当将A(μg/ g)定义为可从1g调色剂中由甲醇提取的调色剂表面上的非离子表面活性剂含量,B(m 2 / g)定义为从 通过基于孔径电阻法操作的精密粒径分布分析仪获得的调色剂粒径分布,A / B比至少为100μg/ m 2且不大于9000μg/ m 2。
    • 8. 发明申请
    • METHOD OF PRODUCING TONER
    • 生产调色剂的方法
    • US20110305989A1
    • 2011-12-15
    • US13153324
    • 2011-06-03
    • Naoya IsonoKatsuyuki NonakaYasuhiro HashimotoAkira SugiyamaYuhei Terui
    • Naoya IsonoKatsuyuki NonakaYasuhiro HashimotoAkira SugiyamaYuhei Terui
    • G03G9/00
    • G03G9/0804G03G9/0806
    • A method of stably producing a toner is provided. This method provides a long-term stabilization of material dispersion in a colorant-dispersed solution and inhibits segregation of the material and provides a more microfine and more uniform dispersion of the colorant in the toner, and moreover produces a toner that has a sharp toner particle diameter distribution. This method of producing toner has at least a colorant dispersion step of obtaining a colorant-dispersed solution by dispersing a pigment-containing colorant in a liquid mixture that contains the colorant and a dissolved resin solution or a polymerizable monomer, wherein the liquid mixture contains a nonionic surfactant and the nonionic surfactant has at least an oxyalkylene group and has a hydrophile-lipophile balance value (HLB value) of 9.0 or more and 17.0 or less.
    • 提供一种稳定生产调色剂的方法。 该方法提供了在着色剂分散溶液中的材料分散体的长期稳定化,并且抑制了材料的偏析并且提供了更多的微细和更均匀的着色剂在调色剂中的分散体,并且还产生具有尖锐的调色剂颗粒 直径分布。 这种制造调色剂的方法至少具有着色剂分散步骤,其通过将含颜料的着色剂分散在含有着色剂的液体混合物和溶解的树脂溶液或可聚合单体中来获得着色剂分散溶液,其中液体混合物含有 非离子表面活性剂和非离子表面活性剂至少具有氧化烯基,亲水亲油平衡值(HLB值)为9.0以上且17.0以下。