Patent ID: 8932394
Filing Date: 2015-01-13
Classification: B41J,C09B,C09D

Abstract:
1. An ink jet ink comprising a coloring material and a water-soluble organic solvent, wherein the coloring material comprises a compound represented by the following formula (I), the water-soluble organic solvent comprises ethylene urea and an alkanediol having 4 to 6 carbon atoms, and a content A (% by mass) of the coloring material, a content B (% by mass) of the ethylene urea and a content C (% by mass) of the alkanediol having 4 to 6 carbon atoms based on a total mass of the ink satisfy relationships of 0.20≦B/A≦10.0 and 0.10≦C/A≦10.0: where R