The marker pen is made of sponge-hole hard foam pen, and the ink is oily or water-based color ink. Needle tube pen is pen-shaped, and the nib is a hollow steel circular tube, about 2cm long, with a movable thin steel needle hidden inside. Swinging the needle pen up and down can remove the paper fiber blocking the nib in time. Signature pens are pens, ballpoint pens, or disposable water-based pens, with hard foam heads.

Fiber pen is made of synthetic fiber (mainly acrylic fiber, polyester fiber, nylon fiber, etc.) and resin.

2. Different structures

Markers are usually alcohol solvents and have a smell. The stylus can draw even and consistent lines. In foreign countries, checks are usually signed with a pen, and the nib is divided into EF, F, M, B and so on. In terms of thickness, EF is the thinnest, and signatures usually use the widths of m and b. The fiber pen should swing the needle tube pen up and down, and observe whether the thin steel needle with the nib is flexible and slightly longer than the nib for future use.

Extended data:

principle

The outflow of ink from the stylus is the result of air pressure and gravity. The air entering the pen tube comes from the tip of the pen during transportation.

Small bubbles float from the pen tip into the pen tube and then press on the ink. The air passage in the nib assembly makes the air pressure inside and outside the pen tube uniform, so the ink can flow out evenly. If the airway is blocked, bubbles cannot enter and ink cannot flow out.

The blockage is because the vibration of the pen makes the air expand, thus allowing ink to enter the snorkel. There is a thin wire tied to a weight in the tubular nib, which is the only movable part of the needle pen. When the needle pen tilts or vibrates, gravity makes the wire move up and down, controls the outflow of ink, and removes any small sundries in the pen tip.

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