申请人:CANON KABUSHIKI KAISHA
公开号:US20130271540A1
公开(公告)日:2013-10-17
The invention provides an ink containing a coloring material and a water-soluble organic solvent, wherein the coloring material is a compound represented by the following general formula (1), and the water-soluble organic solvent includes an alkanediol having 4 to 6 carbon atoms:
wherein rings A, B, C and D each indicated by a broken line are, independently of one another, a benzene ring or a nitrogen-containing heteroaromatic ring, the number of the nitrogen-containing heteroaromatic ring is more than 0.0 and 3.0 or less, the remainder is the benzene ring, R
1
is an alkyl group, R
2
is an alkylene group, X is an anilino group having one or more sulfonic groups, m is more than 0.0 and less than 3.9, n is 0.1 or more and less than 4.0, and the sum of m and n is 1.0 or more and less than 4.0.