WATER-BASED INK COMPOSITION FOR BALLPOINT PEN

摘要

To provide an ink composition for a water-based ballpoint pen, having properties such as excellent writing stability in which writing failure such as starving does not occur. Disclosed is an ink composition for a water-based ballpoint pen, including an aqueous phase, and an oil phase contained in the aqueous phase in a state of an oil-in-water type emulsion, wherein
the oil phase, or the oil phase and the aqueous phase contains a colorant, and
the oil phase contains, in components composing the oil phase, a fatty acid having 6 to 22 carbon atoms.