| abstract |
The present invention relates to an aqueous inkjet ink having certain chelating agent additives, an inkjet ink set based on the aqueous inkjet ink, and a method of printing with these inks and ink sets, thereby optically printing images. Concentration (OD) increases. Chelating agent additives are particularly advantageous for increasing the OD of self-dispersing pigment colorants, particularly inks having a combination of such colorants and multivalent cation additives. |