| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a printing ink which can especially form printed layers more easily reflecting infrared rays. <P>SOLUTION: This printing ink composition containing a coloring agent and spherical particles having a sphericity of≥0.5, wherein a coloring agent absorbing infrared rays is contained as the coloring agent, and the spherical particles are spherical particles having an average particle diameter of 4 to 30μm. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
