| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an aqueous ink composition capable of obtaining a good writing performance having a wide practical property by using a specific compound for removing gas in the ink chemically, and a writing utensil building-in the same ink. <P>SOLUTION: This aqueous ink composition for the writing utensil contains at least a coloring agent, water soluble organic solvent, water, and sesamol and/or its derivative. The sesamol and/or its derivative is contained by 0.01-5 wt.% in the ink composition. The writing utensil is also provided by containing the aqueous ink composition in the writing utensil of a type housing an ink reverse flow-preventing body for replenishing the ink following the consumption of the ink. <P>COPYRIGHT: (C)2007,JPO&INPIT |
