Page "Ink" Paragraph 18

To circumvent this problem, dye-based inks are made with solvents that dry rapidly or are used with quick-drying methods of printing, such as blowing hot air on the fresh print.

Other methods include harder paper sizing and more specialized paper coatings.

The latter is particularly suited to inks used in non-industrial settings ( which must conform to tighter toxicity and emission controls ), such as inkjet printer inks.

Another technique involves coating the paper with a charged coating.

If the dye has the opposite charge, it is attracted to and retained by this coating, while the solvent soaks into the paper.

Cellulose, the wood-derived material most paper is made of, is naturally charged, and so a compound that complexes with both the dye and the paper's surface aids retention at the surface.

Such a compound is commonly used in ink-jet printing inks.