| abstract |
An inkset suitable for inkjet printing is presented which contains a polymer systemnwhich reacts with chitosan to produce a gel precipitate on a substrate. The precipitant ofnthis invention is created by the interaction of the chitosan in one fluid, such as an ink, andna reactive fluid in another pen, typically the 5 th pen. The gel form a protective film on thenmedium substrate and provides permanence benefits, such as increased drytime,nsmearfastness, smudgefastness, and waterfastness. |