Patent ID: 8419808

Claim:
A dye compound represented by the following formula (I), or a salt thereof: wherein, R 1 , R 2 , R 3 , and R 4 are each independently H, C 1 ˜C 12 alkyl, C 1 ˜C 12 alkoxy, or a halogen, and n is 1, 2, or 3; D 1 , and D 2 are each independently C 1 ˜C 12 alkyl, or D 1 , D 2 , and N bond together to form wherein R 5 , R 6 , R 7 , R 8 , R 10 , R 11 , R 13 , and R 14 are each independently H, C 1 ˜C 12 alkyl, C 1 ˜C 12 alkoxy, amino, or halogen, and R 9 , R 12 , and R 15 are each independently H, or C 1 ˜C 12 alkyl; B is wherein R 16 is H, C 1 ˜C 12 alkyl, C 1 ˜C 12 alkoxy, or halogen.