Patent ID: 8215760
Filing Date: 2012-07-10
Classification: B41M,C09B,C09D

Abstract:
1. An ink set comprising at least a magenta ink composition and a cyan ink composition, wherein the magenta ink composition comprises: at least one colorant selected from the group consisting of compounds represented by a general formula (1); and at least one colorant selected from the group consisting of compounds represented by a general formula (2), and the cyan ink composition comprises at least one colorant selected from the group consisting of phthalocyanine compounds meeting requirements 1 and 2: Requirement 1: the ratio of the maximum absorbance within the absorption band of from 660 nm to 680 nm to the maximum absorbance within the absorption band of from 600 nm to 640 nm on the spectral absorption curve of aqueous solution is less than 1; and Requirement 2: the oxidation potential is more positive than 1.0 eV (vsSCE); wherein A represents a residue of 5-membered heterocyclic diazo component A-NH wherein R