Patent ID: 7635181
Filing Date: 2009-12-22
Classification: B41C,C08G,C09D,G03F

Abstract:
1. An ink jet-recording ink capable of being cured through the irradiation with a radioactive ray, comprising a coloring material, a polymerizable compound and a polymerization initiator system, wherein said polymerization initiator system comprises a polymerization initiator and at least one co-sensitizing agent selected from the group consisting of compounds represented by the following general formulas (i), (iii), (iv), (viii), (ix-1) and (ix-2): General Formula (i): wherein R General Formula (iii): wherein A represents a phenyl group or a naphthyl group, —X— represents —N(R General Formula (iv): wherein Ar represents an aromatic group or a heterocyclic group, —X— represents —O—, —S—, —SO General Formula (viii): wherein X and Y each independently represents linear or branched, chain or cyclic alkyl groups having 1 to 20 carbon atoms; linear or branched, chain or cyclic alkenyl groups having 2 to 20 carbon atoms; alkynyl groups having 2 to 20 carbon atoms; aryl groups having 6 to 20 carbon atoms; acyloxy groups having 1 to 20 carbon atoms; alkoxy-carbonyloxy groups having 2 to 20 carbon atoms; aryloxy-carbonyloxy groups having 7 to 20 carbon atoms; carbamoyloxy groups having 1 to 20 carbon atoms; carbonamide groups having 1 to 20 carbon atoms; sulfonamide groups having 1 to 20 carbon atoms; carbamoyl groups having 1 to 20 carbon atoms; sulfamoyl groups having 0 to 20 carbon atoms; alkoxy groups having 1 to 20 carbon atoms; aryloxy groups having 6 to 20 carbon atoms; aryloxycarbonyl groups having 7 to 20 carbon atoms; alkoxycarbonyl groups having 2 to 20 carbon atoms; N-acyl-sulfamoyl groups having 1 to 20 carbon atoms; N-sulfamoyl-carbamoyl groups having 1 to 20 carbon atoms; alkylsulfonyl groups having 1 to 20 carbon atoms; arylsulfonyl groups having 6 to 20 carbon atoms; alkoxy-carbonylamino groups having 2 to 20 carbon atoms; aryloxy-carbonylamino groups having 7 to 20 carbon atoms; imino groups having 1 to 20 carbon atoms; ammonio groups having 3 to 20 carbon atoms; carboxyl groups, sulfo groups, oxy groups, mercapto groups; alkylsulfinyl groups having 1 to 20 carbon atoms; arylsulfinyl groups having 6 to 20 carbon atoms; alkylthio groups having 1 to 20 carbon atoms; arylthio groups having 6 to 20 carbon atoms; ureido groups having 1 to 20 carbon atoms; heterocyclic groups having 2 to 20 carbon atoms; acyl groups having 1 to 20 carbon atoms; sulfamoyl-amino groups having 0 to 20 carbon atoms; silyl groups having 2 to 20 carbon atoms; isocyanate groups, isocyanide groups, halogen atoms, cyano groups, nitro groups, and onium groups, and n represents an integer ranging from 0 to 4, provided that, when n is not less than 2, a plurality of Ys present in the formula may be the same or different or may form a ring structure; General Formulas (ix-1) and (ix-2): wherein Z, Y, Y′ and Y″ each independently represents a monovalent substituent, and n, n′ and n″ each independently represents an integer ranging from 1 to 5, provided that, when n, n′ and n″ are not less than 2, a plurality of each substituent Ys, Y′s and Y″s present in the formula may be the same or different or may form a ring structure.