| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an inkjet ink which hardly undergoes changes in pH with time and exhibits excellent delivery stability, an inkjet cartridge containing the same, and the like. <P>SOLUTION: The ink for inkjet comprises at least a self-dispersible pigment, water, a water-soluble organic solvent and a buffering agent, where an organic compound having an acid dissociation constant pKa of at least 8 but at most 11 is employed as the buffering agent. <P>COPYRIGHT: (C)2004,JPO |
