WATER-BASED STAMPING INK COMPOSITION

摘要

PROBLEM TO BE SOLVED: To obtain a water-based stamping ink composition capable of suppressing the lowering of a color developing density of a colorant on a stamped surface even when pigment particles having a small particle diameter are contained as the colorant. SOLUTION: This water-based stamping ink composition comprises a colorant, a penetrant and a wetting agent and further contains 0.05-5 wt.% of a hydrophilic silica having 1-25μm average particle diameter.