Ink of marking pens

Variety of pigment

Dye or pigment is used in some stationery.
To briefly explain the difference, dyes are like sugar water in which color particles are dissolved in a liquid, and pigments are like ink liquid in which color particles are suspended in the liquid. Pigments are being revisited in recent years because they have the advantage of sharp handwriting and excellent water resistance and light resistance.
The pigment is finely divided from the originally very stable pigment and is physically floated with the aid of a surfactant as a stabilizer. It is made into ink by force, and once it dries it does not melt easily, so it has good water resistance.