| 摘要 |
PROBLEM TO BE SOLVED: To prevent discoloration and a blocking phenomenon on the thermal face of a paper. SOLUTION: The below mentioned printing ink is used for printing a printing layer 3. The printing layer 3 comprises specific items, ruled lines, and the like, formed on the obverse face of a thermal layer 2 on a paper 1 of a printer paper 10 for an H/T use, and timing marks 5 formed along the edges of the reverse face of the paper 1 at a constant interval. The printing ink mainly contains coloring agents consisting of inorganic pigments, organic pigments, and the like, and an acrylic prepolymer. The ink further contains a polymerization initiator, but no monomer which works as a photoreactive diluting agent or a viscosity controlling agent. |
