| abstract |
PROBLEM TO BE SOLVED: To provide an aqueous ink for use in an image forming method comprising a step of applying a reaction liquid that destabilizes a dissolved state or a dispersed state of a water-insoluble colorant in the ink by contacting with the ink containing the water-insoluble colorant. Provides a water-based ink that has a sufficiently large area factor, excellent image density, bleed resistance, and fixability, and excellent storage stability. To do. A water-based ink used in an image forming method including a step of applying a specific reaction liquid, wherein the water-based ink contains water, a water-insoluble colorant, and a plurality of water-soluble organic solvents, and the plurality of water-soluble inks. The organic solvent contains a good solvent and a poor solvent for the water-insoluble colorant, the ratio of the content of the good solvent and the poor solvent is in a specific range, and each of the plurality of water-soluble organic solvents has a Ka value. A water-based ink in which the water-soluble organic solvent exhibiting the maximum Ka value is the poor solvent. [Selection] Figure 1 |