Patent ID: 7041162

Claim:
An aqueous ink composition comprising: a color microparticle dispersion comprising an oil-soluble dye; a hydrophilic organic solvent; and a fluorine t surfactant represented by Formula (1) or Formula (2): R—(CF 2 ) m —(CH 2 ) n —Y 1 -L 1 -Z Formula (1) wherein R represents a hydrogen atom or a fluorine atom; m denotes a number of 3 to 8; n denotes a number of 0 to 6; Y 1 represents a connecting group selected from the group consisting of —O—, —S—, —SO 2 — and —SO—; L 1 represents a constitutional divalent group having 2 or more carbon atoms; and Z represents an anionic group or its salt, or wherein R represents a hydrogen atom or a fluorine atom; m denotes a number of 3 to 8; n denotes a number of 0 to 6; Y 2 represents a connecting group selected from the group consisting of —O—, —S—, —SO 2 — and —SO—; L 2 represents a constitutional divalent group having 2 or more carbon atoms; and Z represents an anionic group or its salt.