| 摘要 |
PROBLEM TO BE SOLVED: To provide a black ink with which an image excellent in resistance to ozone can be recorded.SOLUTION: An ink contains a first color material and a second color material, and has gray or black color tone. The first color material is a compound that is represented by the following general formula (I) (wherein rings A, B, C and D each independently represent a benzene ring or a heteroaromatic ring, and the number of the heteroaromatic ring is greater than 0.0 and 3.0 or less on average and the rest is a benzene ring; Rrepresents an alkyl group, Rrepresents an alkylene group, X represents an anilino group having 1 or more sulfonic acid groups; m is greater than 0.0 and less than 3.9 on average, n is 0.1 or more and less than 4.0 on average, and the sum of m and n is 1.0 or more and less than 4.0 on average), and the second color material is a black color material that has a plurality of azo bonds including an azo bond directly bonded to a heterocycle. |
