abstract |
An oil-based pigmented ink composition containing a pigment,na polymer and an organic solvent, wherein the organic solventncontains a (poly)alkylene glycol derivative in an amount of 30nto 90% by weight and a nitrogen-containing heterocyclic compoundnin an amount of 1 to 30% by weight, each based on the whole weightnof the ink composition, and the ink composition has a flash pointnof at least 63°C. |