| 摘要 |
An ink set comprises a black ink which contains a black pigment, resin particles having carboxyl group, a first pH-adjusting agent, a water-soluble organic solvent, and water, and a color ink which contains a coloring pigment, resin particles, a second pH-adjusting agent, a water-soluble organic solvent, and water. The pH of the black ink is not less than 7.8, and the pH of the color ink is not more than 4.5. Any bleeding of the black ink is not caused even when an image is formed on a cloth or the like with the ink set. Even when the cloth is washed, then the ink is not lost from the image formation objective, and the initial image density is maintained.
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