| 摘要 |
<p>PURPOSE:The titled ink causing neither coloring on a heat-sensitive coloring layer even if something is brought into contact with the heat-sensitive coloring layer of heat-sensitive recording paper, nor reduction in coloring concentration and yellowing in use, obtained by adding a polyethylene resin having low polymerization degree to ultraviolet light curing type printing ink. CONSTITUTION:100pts.wt. ultraviolet light curing type printing ink (e.g., carbon black, etc. is used with 2-ethylhexyl acrylate as a photopolymerizable monomer) is blended with 0.5-2pts.wt. polyethylene resin having 500-1,000 low polymerization degree, to give the desired ink. Heat-sensitive recording paper to which the ultraviolet light type printing ink is applied is preferably obtained by forming a heat-sensitive coloring layer containing leuco dye such as triphenylmethane compound, etc. and a developer such as a phenolic substance, acidic substance (salt), etc. on a substrate such as paper, etc. USE:Useful as ink for printing an end mark on the back of recording paper such as facsimile paper, etc. for indicating the end.</p> |
