Patent ID: 7311392
Filing Date: 2007-12-25
Classification: C09D

Abstract:
1. An inkjet recording ink comprising an aqueous medium having dissolved therein a phthalocyanine dye, wherein said phthalocyanine dye has an ionic hydrophilic group and is a water-soluble dye having an oxidation potential more positive than 1.0 V (vs SCE) and the ink comprises a water-miscible organic solvent having a vapor pressure of 2,000 Pa or less at 20° C. wherein said phthalocyanine dye is represented by the following formula (I): wherein X Z represents a substituted or unsubstituted alkyl group, a substituted or unsubstituted cycloalkyl group, a substituted or unsubstituted alkenyl group, a substituted or unsubstituted aralkyl group, a substituted or unsubstituted aryl group, or a substituted or unsubstituted heterocyclic group, and R1 and R2 each independently represents a hydrogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted cycloalkyl group, a substituted or unsubstituted alkenyl group, a substituted or unsubstituted aralkyl group, a substituted or unsubstituted aryl group, or a substituted or unsubstituted heterocyclic group, provided that when a plurality of Zs are present, these may be the same or different, Y provided that when a plurality of X a M represents a hydrogen atom, a metal atom or an oxide, hydroxide or halide thereof.