Patent ID: 7655713

Claim:
A non-aqueous ink-jet ink for printing on a recording medium comprising a poly(vinyl chloride), the ink-jet ink comprising a pigment, a resin for fixing an image, a compound A represented by Formula (1) or Formula (2) and a solvent B represented by Formula (3) or Formula (4): wherein R 1 and R 2 each independently represent a group having 1-6 carbon atoms, provided that R 1 and R 2 may be joined to form a ring, wherein R 3 and R 4 each independently represent a group having 1-6 carbon atoms, provided that R 3 and R 4 may be joined to form a ring, wherein a content of the compound A in the ink-jet ink is from 1.5 to 30 weight % based on the total weight of the ink-jet ink, R 5 —(OX 1 ) 2 —O—R 6 Formula (3) wherein R 5 and R 6 each independently represent a methyl group or an ethyl group; and OX 1 represents an oxyethylene group or an oxypropylene group, wherein R 7 and R 8 each independently represent a methyl group or an ethyl group; and OX 2 represents an oxyethylene group or an oxypropylene group, wherein a content of the solvent B in the ink-jet ink is from 50 to 90 weight % based on the total weight of the ink-jet ink; the resin for fixing an image is one selected from the group consisting of a vinyl chloride-vinyl acetate copolymer, a vinyl chloride-vinyl acetate-maleic anhydride copolymer, a vinyl chloride-vinyl acetate-vinyl alcohol copolymer and a vinyl chloride-vinyl acetate-hydroxyalkyl acrylate copolymer; and the resin for fixing an image has a number average molecular weight of from 10,000 to 30,000.