Patent ID: 7291214

Claim:
An ink for use in an ink jet recording method in which an ink is ejected from a recording head through action of thermal energy, wherein the ink comprises a pigment represented by the general formula (1), a dispersant, and a water-soluble organic compound, wherein the water-soluble organic compound comprises polyethylene glycol having an average molecular weight of 1,000 and 1,2-alkanediol, wherein the pigment substantially shows neither an exothermic peak nor an endothermic peak in a range of 25° C. or more to 200° C. or less of a DSC curve obtained by means of a differential scanning calorimeter (DSC); wherein R 1 , R 2 , R 3 , R 4 , R 5 and R 6 each independently represent a hydrogen atom, an alkyl group having 1 to 3 carbon atoms, a fluoroalkyl group having 1 to 3 carbon atoms, an alkoxyl group having 1 to 3 carbon atoms, a halogen atom, a nitro group, a sulfonic acid group or an alkaline earth metal salt thereof, an N-phenylaminosulfonyl group, a carboxyl group or an alkaline earth metal salt thereof, a carboamide group, an N-phenylcarbamoyl group, an ureylene group, an iminodicarbonyl group or a carboxylate group.