| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an aqueous ink composition for a marking pen capable of controlling pigment solidification in capillary spaces for prolonged passage of time, when used in the marking pen having a pen tip with the capillary spaces, because of excellent stability of the pigment in the ink, and having superior writing performance capable of preventing the pen from writing inferiority such as becoming blurred. <P>SOLUTION: This aqueous ink composition for the marking pen comprises pigment, water, hydroxypropylmethylcellulose phthalate and/or hydroxypropylmethylcellulose acetate succinate, wherein a pH of the ink composition is≥7. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
