Provided are an aqueous ink composition, an ink set, an image forming method, and resin microparticles for an ink, in which the aqueous ink composition contains an aqueous medium and the resin microparticles, a polymer constituting the resin has [a] to [c], a content ratio of [a] to [c] in the polymer is in the specific range, and the weight-average molecular weight of the polymer is 80,000 or more.
[a] is a constitutional component represented by General Formula (1) or (2).
R1 and R2 each represent a hydrogen atom or an alkyl group having 1 to 4 carbon atoms.
A1 represents -O- or -NR3- and R3 represents a particular group.
A2 represents a single bond, -COO-, or -CONH-.
L1 and L2 represent a divalent linking group having a specific chain length.
M1 and M2 represent a hydrogen atom or a particular ion.
[b] is a particular constitutional component having an aromatic ring or an aliphatic ring.
[c] is an alkyl (meth)acrylate ester component having a specific chain length.
本发明提供了一种
水性油墨组合物、油墨组、图像形成方法和油墨用
树脂微粒,其中
水性油墨组合物包含
水性介质和
树脂微粒,构成
树脂的聚合物具有[a]至[c],聚合物中[a]至[c]的含量比在特定范围内,聚合物的重量平均分子量为 80,000 或以上。
[a]是通式(1)或(2)所代表的组成成分。
R1 和 R2 分别代表氢原子或具有 1 至 4 个碳原子的烷基。
A1 代表-O-或-NR3-,R3 代表一个特定的基团。
A2 代表单键、-COO- 或-CONH-。
L1 和
L2 代表具有特定链长的二价连接基团。
M1 和 M2 代表氢原子或特定离子。
[b] 是具有芳香环或脂肪环的特定组成成分。
[c] 是具有特定链长的烷基(甲基)
丙烯酸酯成分。