| abstract |
Ink jet recording ink having a high image density, excellent image sharpness, excellent ejection stability and storage stability even when black pigment is used, an ink cartridge containing the ink in a container, An ink jet recording apparatus provided with a mechanism for recording by discharging ink onto an image support. (1) An ink for ink-jet recording comprising carbon black, a dispersant, water, a water-soluble organic solvent and trimethylglycine, wherein the dispersant contains a diisobutylene / maleic acid copolymer. (2) The inkjet recording according to (1), wherein the monomer ratio (weight ratio) of diisobutylene and maleic acid in the synthesis of the diisobutylene / maleic acid copolymer is in the range of 5: 5 to 2: 8. For ink. [Selection] Figure 1 |