The disadvantages of the fountain pen are:
1. It requires frequent filling of ink, which is troublesome;
2. Ink will leak out due to the influence of atmospheric pressure;
3. The pen tip will be seriously worn after writing for a long time;
4. Do not use too much force when writing, or write backwards, otherwise the pen tip will be damaged.
The suggestions for improvement are:
1. It is recommended that the pen be made of corrosion-resistant precious resin;
2. Develop a piston system to extend the life of writing instruments ;
3. The pen tip should be made of gold to reduce wear and resist corrosion;
4. The pen cap should use a double helix system.
1. Explanation of fountain pen: A fountain pen is a writing instrument that contains water-based ink in the pen barrel and continuously supplies ink to the pen tip through gravity and capillary action. It was invented in the early 19th century. The ink of most fountain pens can be refilled. Common methods of refilling ink include replacing cartridge ink tubes, piston filling, ink absorbers, pressure bladder filling, lever filling or more rare inking methods such as submarine filling. wait. Some users also use syringes to inject ink into cartridge-type ink tubes for reuse.
2. The ink-absorbing principle of the pen: after the air in the pen bag is squeezed out, the air pressure in the pen bag is less than the outside air pressure, and the outside air pressure squeezes the pen ink. ?