| 摘要 |
<p>PURPOSE:To obtain an ink composition containing a dispersant such as an alkylamine, an infrared-emitting fluorescent substance and a binder resin, excel lent in dispersion of the infrared-emitting fluorescent substance, having a high emitting intensity and excellent in emission properties. CONSTITUTION:This ink contains a dispersant composed of an alkylamine (preferably having a 12 to 18C alkyl group) and/or a phosphate (pref erably methacryloyl-based phosphate), an infrared-emitting fluoresceAt substance fpreferably a compound of the formula [A is Al, Bi, B, In, Ga, So, Gd, Ce, Y, Lu or La; (x) is 0 to 0.9 and (y) is 0 to 0.9; 0<x+y<=1)]} and a binder resin in combination.</p> |
