Patent ID: 9428661
Filing Date: 2016-08-30
CPC Classification: B41J,C09B,C09D

Claim Text:
1. An aqueous ink composition comprising at least, as colorants, both a compound represented by Formula (1) or its salt or a mixture thereof and a colorant having a maximum absorption wavelength λmax in a range of 560 to 680 nm and having a phthalocyanine skeleton, wherein R 1 , R 2 , R 5 , R 6 , and R 7 each independently represents a group selected from the group consisting of a hydrogen atom, a halogen atom, a cyano group, a hydroxy group, a carboxy group, a sulfo group, a sulfamoyl group, a nitro group, an alkoxy group optionally having a substituent, an alkylsulfonyl group optionally having a substituent, an alkyl group, an arylsulfamoylamino group optionally having a substituent, and an alkylcarbonylamino group; R n represents 0 or 1.