Patent ID: 8808440
Filing Date: 2014-08-19
Classification: C09B,C09D

Abstract:
1. An ink composition comprising: at least three coloring materials of a first coloring material, a second coloring material, and a third coloring material, wherein the first coloring material is a compound represented by Formula (Y), the second coloring material is at least one compound selected from the group consisting of compounds designated as Group A, a mass ratio of a content (% by mass) of the second coloring material in the ink composition to a content (% by mass) of the first coloring material in the ink composition is 0.001 to 1.0, and the third coloring material is a compound different from the first coloring material and is represented by any one of Formulas (1) to (8): wherein in Formula (Y), M's each independently represent a hydrogen atom or a cation, and when M represents a cation, M represents Li wherein in Group A, M's each independently represent a hydrogen atom or a cation, and when M represents a cation, M represents Li wherein in Formula (1), A B X n1 represents 0 or 1, provided that at least one of A wherein in Formula (2), G n when n when n when n Formula (3): wherein in Formula (3), R n x m wherein in Formula (4), n represents 1 or 2, x represents an integer of 2 to 4, and A represents a divalent bonding group represented by any one of Formulas (A-1) to (A-3): wherein in Formula (5), A each of Q each of R R R provided that the compound of Formula (5) has at least one carboxylic acid group and the compound of Formula (5) is not a compound represented by Formula (B-1): wherein in Formula (6), each of S each of W a m (a (b (c (d (n Formula (7): wherein in Formulas (7) and (8), A Q R each of W each of S a b (a (c e f (e (g