Oil-based ink composition for writing tools and writing tools using it

摘要

PROBLEM TO BE SOLVED: To obtain an oil-based ink composition for a writing tool which improves writing performance and writing taste and has good ink stability over time, and a writing tool using the same. An oil-based ink composition for writing utensils, which comprises a colorant, an organic solvent, and a polyglycerin condensed fatty acid ester. Is to be. [Selection diagram] None