Patent 7148268 was granted and assigned to Videojet Technologies (company) on December, 2006 by the United States Patent and Trademark Office.
Disclosed is an ink jet ink composition comprising one or more organic solvents, an acidic resin, a polyamine, an opaque pigment, and a hydrophobic conductive agent. The ink jet ink composition of the present invention has one or more of the following advantages. The ink jet ink composition has a short ink dry time, the ink is able to print on glass under cold and/or not cold temperatures, and under humid and/or dry conditions; the printed messages have excellent adhesion to the substrate, and the printed message can be removed by a caustic wash.