| abstract |
To provide an ink set having good ejection stability, capable of obtaining a high-quality image even when printing at high speed, and having excellent drying properties and being difficult to reverse. An ink composition containing (a) a pigment, (b) a water-soluble solvent, (c) a surfactant, and (d) water, and (e) an aggregation accelerator that promotes aggregation of the ink composition. And (f) a colorless ink composition containing a water-soluble solvent, wherein (b) the water-soluble solvent of the ink composition is 65% by mass or more of a water-soluble solvent having an Sp value of 27.5 or less. (B) the water-soluble solvent content in the ink composition is more than 30% by mass and 55% by mass or less, and the colorless ink composition (f) the water-soluble solvent has an Sp value of 27.5 or more. An ink set comprising 90% by mass or more of a water-soluble solvent. [Selection figure] None |