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    • 10. 发明授权
    • Ink composition providing image excellent in light stability
    • 油墨组合提供光稳定性优异的图像
    • US06972303B1
    • 2005-12-06
    • US09486129
    • 1999-06-24
    • Toshiyuki MiyabayashiShinichi Kato
    • Toshiyuki MiyabayashiShinichi Kato
    • B41J2/165B41J2/17B41J2/175C09D11/00C09D11/023C09D11/033C09D11/037C09D11/10C09D11/101C09D11/104C09D11/106C09D11/107C09D11/108C09D11/322C09D11/38C08K9/10C08L39/00C08L45/00
    • C09D11/30
    • Disclosed are a colorant which can realize an ink compositions possessing excellent lightfastness, waterfastness, color development, and rubbing/scratch resistance, and an ink composition containing the same. The ink composition comprises at least a colorant, a polymer covering the colorant and having, in its molecular chain, sites possessing ultraviolet absorbing activity and/or photostabilizing activity, water, and a water-soluble organic solvent. The ink composition according to the present invention include two preferred embodiments. In the ink composition according to the first preferred embodiment, the polymer functions as a dispersant and covers the colorant. In the ink composition according to the second preferred embodiment, the polymer is in the form of fine particles covering the colorant. Further, the colorant comprises: a dye or a pigment; and a polymer covering the colorant and having, in its molecular chain, sites possessing ultraviolet absorbing activity and/or photostabilizing activity, the dye or the pigment being in the form of fine particles.
    • 公开了可以实现具有优异的耐光性,耐水性,显色性和耐擦擦性的油墨组合物的着色剂和含有该油墨组合物的油墨组合物。 油墨组合物至少包含着色剂,覆盖着色剂的聚合物,并且在其分子链中具有具有紫外线吸收活性和/或光稳定活性的部位,水和水溶性有机溶剂。 根据本发明的油墨组合物包括两个优选的实施方案。 在根据第一优选实施方案的油墨组合物中,聚合物用作分散剂并覆盖着色剂。 在根据第二优选实施方案的油墨组合物中,聚合物是覆盖着色剂的细颗粒的形式。 此外,着色剂包括:染料或颜料; 和覆盖着色剂的聚合物,并且在其分子链中具有具有紫外线吸收活性和/或光稳定活性的部位,染料或颜料呈细颗粒形式。