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    • 6. 发明授权
    • Composite color and method of making the same
    • 复合颜色和制作方法
    • US07670417B2
    • 2010-03-02
    • US11497827
    • 2006-08-02
    • Jayprakash C. BhattCory J. RuudSundar Vasudevan
    • Jayprakash C. BhattCory J. RuudSundar Vasudevan
    • C09D11/00G01D11/00
    • C09D11/037C09D11/322
    • A composite color includes a first colored ink and a second colored ink. The first colored ink exhibits a color that is different from that exhibited by the second colored ink. The first colored ink includes pigment particles either formulated at a basic pH so that a surface of the pigment particles carries a net negative charge or formulated at an acidic pH so that a surface of the pigment particles carries a net positive charge; and the second colored ink includes pigment particles either formulated at an acidic pH so that a surface of each of the pigment particles carries a net positive charge or formulated at a basic pH so that a surface of the pigment particles carries a net negative charge. The first colored ink and the second colored ink have opposite charges. The composite color exhibits enhanced color richness when printed on a substrate.
    • 复合颜色包括第一着色墨水和第二彩色墨水。 第一种有色油墨表现出与第二种有色油墨不同的颜色。 第一种着色油墨包括在碱性pH下配制的颜料颗粒,使得颜料颗粒的表面带有净负电荷或在酸性pH下配制,使得颜料颗粒的表面带有净正电荷; 并且第二着色油墨包括在酸性pH下配制的颜料颗粒,使得每种颜料颗粒的表面带有净正电荷或在碱性pH下配制,使得颜料颗粒的表面带有净负电荷。 第一个有色墨水和第二个彩色墨水具有相反的电荷。 复合颜色在印刷在基材上时表现出增强的色彩丰富度。