An ink composition containing at least a polymerizable composition, a pigment, and a polymer represented by General Formula (1):
where R1 represents an (m + n)-valent organic linking group, R2 represents a single bond or divalent organic linking group; A1 represents a monovalent organic group having a pigment adsorption structure that contains at least one selected from organic pigment structure, heterocyclic structure, acidic group, group having a basic nitrogen atom, urea group, urethane group, group having a coordinating oxygen atom, hydrocarbon group having 4 or more carbon atoms, alkoxysilyl group, epoxy group, isocyanate group, and hydroxyl group; the n groups A1 and bonds or groups R2 may independently be the same or different; "m" is 1 to 8, "n" is 2 to 9, and m + n is 3 to 10; P1 represents a polymer skeleton; and the m skeletons P1 may be the same or different.
一种油墨组合物,至少含有一种可聚合组合物、一种
颜料和一种由通式(1)表示的聚合物:
其中 R1 代表(m+n)价有机连接基团,R2 代表单键或二价有机连接基团;A1 代表具有
颜料吸附结构的单价有机基团,该结构包含至少一个选自
有机颜料结构、杂环结构、酸性基团、具有碱性氮原子的基团、
脲基、聚
氨酯基团、具有配位氧原子的基团、具有 4 个或更多碳原子的烃基、烷氧基
硅烷基、环氧基、
异氰酸酯基和羟基的基团;n 个基团 A1 和键或基团 R2 可以独立地相同或不同;"m "为 1 至 8,"n "为 2 至 9,m + n 为 3 至 10;P1 代表聚合物骨架;m 个骨架 P1 可以相同或不同。