公开(公告)号：US20080234407A1

公开(公告)日：2008-09-25

申请号：US11719916

申请日：2005-11-18

申请人： Nobushige Tanaka ,  Isao Tsuru ,  Masato Hoshi ,  Takehiro Tsutumi

发明人： Nobushige Tanaka ,  Isao Tsuru ,  Masato Hoshi ,  Takehiro Tsutumi

IPC分类号： C09D11/10

CPC分类号： C09D11/30

摘要： There are provided a water-based ink for ink-jet printing which not only satisfies a high optical density but also is excellent in gloss and image clarity upon printing on a coated paper; a water dispersion used in the water-based ink; and a process for producing the water dispersion. The present invention relates to a water dispersion for ink-jet printing comprising colorant containing water-insoluble polymer particles which is obtainable by mixing at least two kinds of water-insoluble polymer particles (A) and (B) which are different in average particle size from each other, wherein said polymer particles (A) have an average particle size of 70 to 200 nm and said polymer particles (B) have an average particle size of 15 to 110 nm with the proviso that the average particle size of the polymer particles (A) is larger than that of the polymer particles (B), and a difference between the average particle sizes of the polymer particles (A) and (B) is 10 nm or more; a process for production of the water dispersion; and a water-based ink containing the water dispersion.

摘要翻译： 提供了一种用于喷墨打印的水性油墨，其不仅满足高的光密度，而且在涂布纸上打印时也具有优异的光泽和图像清晰度; 用于水性油墨的水分散体; 和水分散体的制造方法。 本发明涉及一种喷墨打印用水分散体，其包含含有水不溶性聚合物颗粒的着色剂，其通过混合平均粒径不同的至少两种不溶于水的聚合物颗粒（A）和（B） 所述聚合物粒子（A）的平均粒径为70〜200nm，所述聚合物粒子（B）的平均粒径为15〜110nm，条件是聚合物粒子的平均粒径 （A）比聚合物粒子（B）大，聚合物粒子（A）和（B）的平均粒径的差为10nm以上， 一种生产水分散体的方法; 和含有水分散体的水性油墨。