Ballpoint pen or ballpoint pen is a kind of water-based signature pen. The writing principle of ballpoint pen mainly uses the direct contact between the ball and paper to generate friction, which makes the ball roll in the ball seat and bring out the ink or ink in the refill to achieve the purpose of writing.
Precautions for use
This kind of pen is more durable than ordinary pen, but if it is used and kept improperly, it often cannot be written, mainly because the dry ink sticks around the steel ball to prevent the ink from flowing out. Ink is a kind of viscous oil, which is made of linseed oil, synthetic pine nut oil (mainly containing terpineol), mineral oil (oil obtained by fractionation of petroleum and other minerals), hard rubber, lampblack and so on.
When using a ballpoint pen, don't write on paper with oil and wax, otherwise the oil and wax will be embedded in the copper bowl along the edge of the steel ball, which will affect the oil output and make it impossible to write. It is also necessary to avoid the impact and exposure of the pen, and wear gloves and a pen cap when not in use to prevent the damage of the pen tip and pen holder and the oil leakage of the pen core from polluting objects. If it is cold or not used for a long time. When the pen runs out of oil, you can put the nib in warm water for a while, and then use the nib to stroke on the paper to write.