An ink jet ink is provided with which metallic luster appearing in printing on a recording medium, i.e. the bronze phenomenon is kept from occurring and good images can be obtained. The ink jet ink includes at least a coloring material which is a compound represented by a specific general formula, and...http://www.google.de/patents/US7270701?utm_source=gb-gplus-sharePatent US7270701 - Ink jet ink, ink jet recording method, ink cartridge, recording unit, and ink jet recording apparatus
