| abstract |
(57) [Problem] To provide an ink for an ink jet printer suitable for use on plain paper, coated paper, and transparent film. The ink comprises yellow, magenta, and cyan inks: the yellow ink includes at least one yellow dye, and has a hue angle of about 90 to about 100 and a chromaticity of more than about 79 on plain paper. A year pseudo-fading less than about 25; the magenta ink comprises at least one magenta dye, A hue angle of about 343 to about 352 and a chromaticity of about 6 on plain paper 0, 1 year pseudo-fading less than about 30; cyan ink contains at least one cyan dye, has a hue angle of about 230 to about 238, chromaticity of about 42, and 1 year pseudo on a plain paper. With a fade of less than about 15, the yellow, magenta, and cyan dyes are soluble in aqueous solvents at a pH of about 2 to about 6. |