INK FOR INKJET RECORDING, INK CARTRIDGE, METHOD FOR INKJET RECORDING, APPARATUS FOR INKJET RECORDING, INK-RECORDED ARTICLE, AND METHOD FOR MANUFACTURING INK-RECORDED ARTICLE

摘要

PROBLEM TO BE SOLVED: To provide an ink for inkjet recording giving a high image density even for plain paper not containing a water-soluble polyvalent metal salt or having a low content of the same, and having a good dispersion stability of pigments.SOLUTION: The ink for inkjet recording used for recording to paper having a concentration of Ca-ions eluted when immersed in pure water of 1.0×10to 5.0×10g/g includes at least a pigment, a pigment dispersant, a water-soluble organic solvent, and a water, where the pigment dispersant is a copolymer synthesized using at least the following monomer (1) and monomer (2). The monomer (1) is an unsaturated ethylenic monomer having a phosphate group or a phosphonic acid group. The monomer (2) is an unsaturated ethylenic monomer having a C12-22 alkyl group.