Patent ID: 7626115

Claim:
A dye, which is represented by Formula 1 below: wherein R a , R b , R c and R d are each independently H + or are represented by Formula 2 below, at least one of R a , R b , R c and R d being represented by Formula 2 below: wherein X 1 , X 2 , X 3 and X 4 are each independently H or a methyl group, A is a substituted or unsubstituted C 6-30 arylene group, a substituted or unsubstituted C 6-30 arylalkylene group, or a substituted or unsubstituted C 6-30 cycloalkylene group, B is a substituted or unsubstituted C 1-20 alkyl group, a substituted or unsubstituted C 1-20 alkenyl group, or a substituted or unsubstituted C 1-20 alkynyl group, which may be present in a linear or branched type, m is an integer from 1 to 20, and n is 0 or 1.