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    • 9. 发明申请
    • INKJET RECORDING INK SET, INK CARTRIDGE, INKJET RECORDING DEVICE, INKJET RECORDING METHOD, AND IMAGE FORMED MATTER
    • 喷墨记录墨盒,墨盒,喷墨记录装置,喷墨记录方法和图像形成
    • WO2012133953A1
    • 2012-10-04
    • PCT/JP2012/059616
    • 2012-04-02
    • Ricoh Company, Ltd.HASEGAWA, ShinFUSHIMI, Hiroyuki
    • HASEGAWA, ShinFUSHIMI, Hiroyuki
    • C09D11/00B41J2/01B41M5/00
    • C09D11/326B41J2/01B41J2/17503C09D11/102C09D11/322C09D11/40
    • To provide an inkjet recording ink set, which contains a cyan ink, magenta ink, yellow ink, and black ink, wherein each ink contains at least a pigment, a surfactant, water, water-soluble organic solvent, and anionic self-emulsifying ether-based polyurethane, wherein each ink contains, as the pigment, a combination of a (i) pigment dispersion liquid, in which the pigment is dispersed in water with assistance of the surfactant, and a (ii) resinous polymer-coated pigment dispersion liquid, in which the pigment is coated with a resinous polymer and dispersed in water, and wherein the (i) pigment dispersion liquid and the (ii) resinous polymer-coated pigment dispersion liquid satisfy the following formula: |A-B| ≤ 30 nm where A is the average particle diameter (D50) of the dispersed pigment in the (i) pigment dispersion liquid, and B is the average particle diameter (D50) of the dispersed resinous polymer-coated pigment in the (ii) pigment dispersion liquid.
    • 为了提供含有青色油墨,品红色油墨,黄色油墨和黑色油墨的喷墨记录油墨组,其中每种油墨至少含有颜料,表面活性剂,水,水溶性有机溶剂和阴离子自乳化醚 其中每种油墨包含作为颜料的(i)颜料分散液与颜料在表面活性剂的帮助下分散在其中的组合,和(ii)树脂聚合物涂覆的颜料分散液 其中颜料用树脂聚合物涂覆并分散在水中,并且其中(i)颜料分散液和(ii)树脂聚合物涂覆的颜料分散液满足下式:| AB | = 30nm,其中A是(i)颜料分散液中分散颜料的平均粒径(D50),B是(ii)颜料中分散的树脂状聚合物涂覆颜料的平均粒径(D50) 分散液。