1. Pen: A pen is a writing tool. Water-based ink is hidden in the pen holder, and ink is continuously supplied to the pen tip through gravity and capillary action. It was invented at the beginning of19th century. Most pens can be refilled with ink. The common ink refilling methods include replacing ink cartridge, piston inking, ink absorber, bag inking, pull rod inking or, more rarely, submarine inking. Some users also use syringes to inject ink into the ink tube of the ink cartridge for reuse.
2. History of the pen: The pen is a pen-like writing tool with a metal body. It holds ink (mostly black or blue) through a hollow pen tube, and then writes through a duckbill pen through gravity and capillary action, with different writing weights. It can be said that it is a writing tool of western calligraphy. Most pens can be replenished with ink. Generally speaking, vials or straws such as eye drops are used to supplement the kit. The earliest historical record of fountain pen can be traced back to 10 century, and this earliest fountain pen has been used until 18 century. The development process was very slow, but it was not until the beginning of the 9th century that a pen with stable and accelerated flow was invented in the production process. Only three key inventions have made the pen a widely popular writing tool. These inventions are: gold nib made of iridium, hard rubber and free-flowing ink.
3. Types of pens: There are many types and models of pens. According to the composition of the nib, it can be divided into gold pen and iridium pen.
Gold pen-the nib is made of gold alloy, which is soft, elastic and comfortable. However, the gold pen is expensive, the nib is soft and difficult to master, so it is not suitable for beginners.
Iridium pen-the nib does not contain gold, and some of it is gold-plated. The nib is hard, but it is cheap and good. Is a tool suitable for beginners to write.