RED OILY INK FOR BALLPOINT PEN

摘要

PROBLEM TO BE SOLVED: To provide a red oily ballpoint pen ink which has excellent light resistance and whose red color can be distinguished, even when faded. SOLUTION: This red oily ballpoint pen ink characterized by containing at least an oil-soluble dye, a resin and an organic solvent and further containing red pigment particles having an average particle diameter of 100 to 400 nm in an amount of 1 to 15 wt.% based on the total amount of the ink.