Filters
Clear- Duration: (Ballpoint) They dry quickly and do not leave smudges. The ink lasts longer compared to other types, but the writing is less smooth and may leave gaps. Suitable for all paper qualities and for everyday use.
- Gel: They come in a variety of ink colors and have a bright writing. The ink is more fluid than ballpoint pens, so they "flow" more easily, but they can smudge. They last less than ballpoint pens. Ideal for drawings and long writing sessions.
- Liquid Ink: (Rollerball) They produce the most ink compared to other types, have comfortable writing, do not leave gaps, but can smudge. Not suitable for low-quality paper. Ink lasts less compared to other types.
- Erasable: Pen with ink that erases using its built-in eraser.
- Invisible Ink: Invisible ink that is not visible during writing, but when illuminated, usually with a specific light.