Ink, ink cartridge and ink jet recording method

摘要

The present invention provides an ink jet ink that is capable of recording an image excellent in light resistance and ozone resistance and has excellent intermittent ejection stability. The ink jet ink contains a coloring material and a water-soluble organic solvent. The coloring material contains a compound represented by the following general formula (I), the water-soluble organic solvent contains ethylene urea end 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.;

主权项

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 R1 represents a monovalent group, R2 represents —OR3 or —NHR4, wherein R3 and R4 each represent a hydrogen atom or a monovalent group, R5 represents an alkyl group, an aryl group or a monovalent triazine ring group, R6 represents an arylene group or a divalent heterocyclic group, R7 represents a divalent linking group, and m represents 0 or 1.