| 主权项 |
1. An aqueous ink composition, comprising:
Component A, a copolymer represented by the following Formula (A′): wherein in Formula (A′), each Rcx independently represents a hydrogen atom or a methyl group;
Zx represents —COO—, —CONRdx—, or a single bond, where Rdx represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms;Rx represents a hydrogen atom, an alkyl group having 1 to 10 carbon atoms, an aryl group having 6 to 20 carbon atoms, or an aralkyl group having 7 to 20 carbon atoms; anda, b, and c are copolymerization ratios in the polymer compound, where the sum of a, b, and c is 100, and 30≦a+b≦90 and 10≦c≦70;Ra and Rb each independently represents an alkyl group having 1 to 4 carbon atoms and Ra and Rb may be bonded to each other to form a 4-membered to 6-membered ring;Rc represents a hydrogen atom or a methyl group;Z represents —COO— or —CONRd, where Rd represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms;X represents a divalent organic group;Rcy represents a hydrogen atom or a methyl group;Zy represents —COO—, —CONRdy—, or a single bond, where Rdy represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms;Ry represents a single bond or a divalent organic group; andA represents a water-soluble group; Component B, a resin-coated pigment; Component C, water; and Component D, a water-miscible organic solvent comprising at least two selected from the group consisting of 2-pyrrolidone, 2-methyl propanediol, and γ-butyrolactone, wherein the mass ratio of Component C to Component D is from 1:0.2 to 1:2. |
