| abstract |
[57] [Abstract] [PROBLEMS] To be able to write on various types of writing surfaces such as resin surface, glass surface, metal surface, etc., and to have excellent drawing line fixation to non-absorbing surfaces, water resistance, and alcohol resistance. In addition, the present invention provides an ink composition for writing implements suitable for marking pens, felt-tip pens, ball-point pens, and the like that can reliably write even when these writing surfaces have releasability or water repellency. SOLUTION: The SP value is 5 to 15 and 20 ° C. An organic solvent having a vapor pressure of 0.01 mmHg to 45 mmHg, a colorant comprising a pigment and / or a dye, a resin having a solubility in water and ethanol at 25 ° C. of 7% or less, and a fluorine-containing surfactant. An ink composition for writing implements, comprising: |