Ink composition, inkjet recording ink and inkjet recording method

摘要

An ink composition includes a colorant represented by the following formula (I); water; a guanidine-based compound; and a colorless water-soluble planar compound having more than ten delocalized &pgr;-electrons within one molecule: wherein Pc represents a (k+l+m+n)-valent phthalocyanine nucleus represented by the following formula (II); wherein the symbols in the formulae (I) and (II) are defined in the specification.