| 摘要 |
PROBLEM TO BE SOLVED: To provide an ink set excellent in rubbing resistance and discharge stability.SOLUTION: The ink set of black, cyan, magenta and yellow colors comprises at least water, a pigment, a water-soluble organic solvent and urethane resin. When the urethane resin included in the black ink is denoted by (A), and the urethane resin included in each of cyan, magenta and yellow inks is denoted by (B), the ink set satisfies both of 150 nm>(average particle diameter of the black ink)>(average particle diameter of the cyan, magenta and yellow ink)>70 nm and (weight average molecular weight of (A))>(weight average molecular weight of (B)). |
