The continuous-type ink-jet ink composition of the present invention contains a poly(vinyl butyral) resin and a rosin-ester-based resin in a specific proportion and has a total content of the organic solvents enumerated in Appended Table 6-2 of Order for Enforcement of Industrial Safety and Health Act, of 5 mass% or less with respect to the ink-jet ink composition. Due to this, the continuous-type ink-jet ink composition is an ink that is high in working safety and hygiene and that, despite this, has excellent delivery stability and flying properties and further has excellent adhesiveness to various kinds of print bases including polyolefin-based films with untreated surfaces.
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