WATER-BASED INK COMPOSITION FOR WRITING INSTRUMENTS

摘要

Provided is a water-based ink composition for writing instruments, said water-based ink for writing instruments containing oxidized cellulose and having suppressed non-uniformity of the viscosity distribution (viscosity differential) over time, excellent viscosity distribution stability over time, and excellent line quality. The water-based ink composition for writing instruments is characterized by at least containing 0.05-1.5% by mass of oxidized cellulose and 0.005-1% by mass of succinoglycan.