| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a printing ink having excellent suitability for continuous printability in offset printing and hardly causing a piling phenomenon. <P>SOLUTION: An improvement in the printing ink used for an offset printing method comprises filling a printing plate having recessed patterns with an ink containing at least a powder component composed of inorganic powder or organic powder, a resin component, a solvent component and a dispersant, transferring the filled ink to a blanket for printing having a silicone rubber sheet on the surface and then transferring the ink from the blanket for printing to the material to be transferred. The characteristic constitution thereof satisfies a tack value after 1 min from the start of measurement within the range of 8-30 when the ink is measured under conditions of 400 rpm number of revolutions with an inkometer according to JIS K 5701. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
