Inkjet ink, ink cartridge containing the inkjet ink, inkjet recording method using the inkjet ink, inkjet recording apparatus using the ink cartridge, and print formed by the inkjet ink

摘要

An inkjet ink is provided. The inkjet ink includes water; a penetrant, a pigment, and a polymer compound. The polymer compound includes a unit (A) including a functional group having the below-mentioned formula (1) or (2), and another unit (B) including a carboxyl group. The unit (A) is included in the polymer compound in an amount of from 30% to 90% by weight based on the total weight of the polymer compound.;