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    • 34. 发明授权
    • Yellow ink composition, ink set, and recording method, recording system and recorded matter which use the ink composition and ink set
    • 黄色油墨组合物,油墨组合和记录方法,使用油墨组合物和油墨组的记录系统和记录物质
    • US07156910B2
    • 2007-01-02
    • US11116947
    • 2005-04-28
    • Shuichi KoganehiraHironori Sato
    • Shuichi KoganehiraHironori Sato
    • C09D11/00C09D11/02
    • C09D11/40C09D11/322
    • It is an object of the present invention to provide a yellow ink composition which is superior in terms of color reproducibility not only in the high-brightness (high-L*) region, but also in the low-brightness yellow region, i.e., in the region of “low L*, a* close to zero, and high b*”, and an ink set equipped with a yellow ink which has a brightness that is high enough that graininess can be sufficiently suppressed, and which is also superior in terms of color reproducibility in the low-brightness yellow region, i.e., in the region of “low L*, a* close to zero, and high b*”. The present invention provides a yellow ink composition in which the Y value is 86 or greater when the Z value in the XYZ display system stipulated by the CIE is 23. Furthermore, the present invention also provides a yellow ink composition which contains a metal complex pigment. In particular, the yellow ink composition of the present invention can express a low-brightness yellow color with good reproducibility. Moreover, the present invention provides an ink set containing a yellow ink in which the Y value is 86 or greater when the Z value in the XYZ display system stipulated by the CIE is 23, as calculated from the ultraviolet-visible transmission spectrum of an aqueous solution diluted 10,000 times by weight or lower.
    • 本发明的目的是提供一种黄色油墨组合物,其不仅在高亮度(高-L *)区域中,而且在低亮度黄色区域,即在 “低L *,a *接近零”和“高b *”的区域,以及具有黄色油墨的油墨组,其具有足够高的亮度,可以充分抑制颗粒度,并且其也优于 低亮度黄色区域的颜色再现性项,即“低L *,a *接近零,高b *”的区域。 本发明提供了当由CIE规定的XYZ显示系统中的Z值为23时Y值为86以上的黄色油墨组合物。此外,本发明还提供一种黄色油墨组合物,其含有金属络合物颜料 。 特别地,本发明的黄色油墨组合物可以以良好的再现性表现出低亮度的黄色。 此外,本发明提供一种含有黄色油墨的油墨组合物,其中当CIE规定的XYZ显示系统中的Z值为23时Y值为86以上,由紫外 - 可见透射光谱 溶液稀释10,000倍以下。