Water pen: This is a common name for the public. Some people call signature pens water pens, some call oil-based pens water pens, and some call marker pens water pens. Anyway, those with ink are used to calling them water pens, so there is nothing wrong with this name. Professional reference notes.
Water-based pen: the main component is water, water-resistant pigment. It does not melt and smudge when exposed to water. Generally, it is used for drawing lines in art paintings. It is characterized by no smudge on paper and no smell. Representative products such as cherry blossom water-based needle Pen, Mitsubishi's water-based marker. Can be erased with organic solvents;
Water-soluble pen: The main components are water, dye, and resin. It is generally used for industrial marking. The ink is hydrophilic and will dissolve when it encounters water. In general industrial processes, markings require easy erasure, so water-soluble pens are selected Marker pens, so they are also called wet erase pens. (Whiteboard markers are generally called dry erase pens);
Oil-based pens: mainly organic solvent formulas, such as alcohols (such as ethanol), ketones (such as acetone), benzenes (such as xylene). The firmness, smell, and quick-drying effect of the formula are different. The characteristics are that the ink is waterproof, firm and not easy to fade, and the color is bright. But the writing paper will smudge.
