| 摘要 |
<p>An object of the present invention is to provide an oil-based pigmented ink composition which is excellent in ejection property in case of printing using an ink-jet printer and is excellent in drying property and fixing property in case of printing on a low cost printing medium such as a PVC film having no receptive layer, and also can endure outdoor environment. The present invention relates to an oil-based pigmented ink composition comprising at least a pigment, a polymer compound and an organic solvent, which contains, as the organic solvent, methoxybutyl acetate in an amount of 20 to 90% by weight based on the entire ink composition; and particularly to the above oil-based pigmented ink composition, which contains, as the other organic solvent, a nitrogen-containing and/or oxygen-containing heterocyclic compound in an amount of 1 to 50% by weight based on the entire ink composition and/or a (poly)alkylene glycol derivative in an amount of 1 to 50% by weight based on the entire ink composition; and to the above oil-based pigmented ink composition, which has a flash point of 61°C or higher, a viscosity of 2.0 to 6.5 cp at 25°C, and a surface tension of 20 to 40 mN/m at 25°C.</p> |
