Nutter McClennen & Fish LLP
Ink composition
An ink composition contains a particular anthrapyridone dye and a particular copper phthalocyanine dye. The hue angle in the L*a*b* color system calculated from spectral characteristics of a 1,000-fold diluted solution of the ink composition in water is 270° to 360°. The content of the anthrapyridone dye is higher than the content of the copper phthalocyanine dye.
Seiko Epson Corporation
C C C
C09D C09B C09B
inventional inventional inventional
Motoki Shigemi Yasuhiro Kazuhiko
Masuda Wakabayashi Oki Kitamura