| abstract |
In an offset rotary printing ink, by replacing a part of a petroleum-based solvent with a solvent derived from a specific plant, an ink capable of obtaining a highly glossy printed matter without impairing the printability of the ink is provided. An offset rotary printing ink comprising a resin for varnish and a solvent, wherein the solvent contains a fatty acid ester represented by the following general formula (1) in an amount of less than 0.1 to 30% by mass. . R1COOR2 (1) (In the general formula (1), R1 represents an alkyl group or alkenyl group having 3 to 11 carbon atoms, and R2 represents an alkyl group having 5 to 14 carbon atoms.) [Selection figure] None |