发明授权
US07473309B2 Water-based ink composition and ballpoint pen using the same 有权
水性墨水组合物和圆珠笔使用相同

Water-based ink composition and ballpoint pen using the same
摘要:
Provided are a water-based ink composition characterized by containing 0.01 to 1.0% by weight of high molecular saccharides (trade name: Diutan gum) represented by Formula 1 as an essential component in the ink composition and a ballpoint pen in which an ink reservoir in a main body is charged with the above water-based ink composition.
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