An ink set including a water-based ink containing a coloring material in a state dissolved or dispersed in an aqueous medium and a water-based reactive liquid containing a first component for insolubilizing or aggregating the coloring material in the ink by mixing with the water-based ink. The water-based...http://www.google.com.au/patents/US6929362?utm_source=gb-gplus-sharePatent US6929362 - Ink set and image forming process, and water-based ink used therein
