| 摘要 |
PURPOSE:To provide a water-based pigment ink which is excellent in dispersibility and dispersion stability and has good drying resistance and low viscosity, by incorporating sorbitan or isosorbite in a water-based pigment ink. CONSTITUTION:Sorbitan and/or isosorbite are/is incorporated in a water-based pigment ink such as an ink contg. a pigment such as carbon black or phthalocyanine blue as well as dispersant, water, water-soluble org. solvent, etc. The resulting ink is excellent in dispersibility and dispersion stability, has good drying resistance and can be used as a low-viscosity ink which is suitable for use in a capillary tube type of writing utensils such as a fountain pen or writing utensils using fiber, felt or monofilament, or slender lever type and ball point pen type of writing utensils. The ink can also be used for recorder, printing, stamp, jet printer, etc. |
