| 摘要 |
An oil-based ink composition for ink jet recording of the present invention contains a colorant and at least 50% by weight of a mixed solvent made by mixing from 0.02 to 4 parts by weight of a lactone-type solvent with 1 part by weight of polyoxyethylene glycol dialkyl ether represented by the following general formula (1): <?in-line-formulae description="In-line Formulae" end="lead"?>R<SUP>11</SUP>-(OC<SUB>2</SUB>H<SUB>4</SUB>)<SUB>n</SUB>-OR<SUP>12</SUP> General Formula (1)<?in-line-formulae description="In-line Formulae" end="tail"?> (wherein R<SUP>11</SUP>, R<SUP>12 </SUP>represent alkyl groups having from 1 to 3 carbon atoms and can be the same or different, and n is an integer from 2 to 4). The oil-based ink composition can be suitably used for printing on a polyvinyl chloride substrate and is excellent in all of print quality, printing stability, dry characteristics of printed matter, and storage stability of ink.
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