| abstract |
An inkjet printing system using a non-aqueous ink composition, whereinn the head holder is configured to define an upper spatial region and a lower spatial region relative to the head holder, and is provided with a plurality of air communication holes for air communication between the upper spatial region and the lower spatial region, and the non-aqueous ink composition comprises a pigment, a pigment dispersant in such an amount that a mass ratio in solid content of the pigment dispersant to the pigment ranges from 0.2 to 2.0, and an organic solvent, the pigment dispersant comprising (A) a polyamide having a polyester side chain and/or a copolymer of vinylpyrrolidone and a C 10-40 alkene, and (B) an alkyl (alkyl)acrylate copolymer dispersed in the non-aqueous ink composition. |