| 摘要 |
An additive for improving the solubility of dyes in a dye composition is disclosed. The additive is a zwitterion that has a polarity greater than the polarity of a solvent in which the dye is dispersed or solubilized. In one embodiment, the additive comprises an amino acid or a derivative of an amino acid. Dye compositions formulated according to the present invention are particularly well suited for use in ink-jet printers.
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