Epson Stylus Pro WT7900 is world first for water-based white ink Wednesday, September 30, 2009 (15:06:06) Posted by RSS Reader Epson has launched an inkjet printer with white ink aimed at the packaging proofing market. The Epson Stylus Pro WT7900 is a 610mm wide (24in) printer which uses the first water-based white ink. Content received from: ImagerZone, http://www.ImagerZone.com