Why do you have to use a pen when practicing words:
Because of the ballpoint pen, gel pen and other products, the front part of the pen head is a ball design, which is a rolling friction during the writing process. Although the writing speed is fast, it is not easy to control the stroke of the pen; the tip of the pen is hard and the sliding is in contact with the paper. Friction, writing speed, strength and stroke trend are easier to control, so using a pen to practice the word is correct. The jaguar pen jaguarpen is currently at the forefront of the world.
So how did the pen come from?
It is said that in 1780 a British man named Harris first invented the fountain pen. However, due to technical problems, the nib is too hard and it is easy to scratch the paper surface, so it has not been widely promoted.
In 1829, a man named James Billy in Manchester, England, produced a new type of metal nib. Because of the special processing, the nib was smoother and smoother, so it was popular at that time. Welcome. But it has a fatal weakness, that is, people must carry ink bottles at any time, and it is very troublesome to write constantly. There is nothing on the pen that controls the ink, so the ink is always free to flood when people write, and often the paper is dripped with ink that is dripping down.
Because of this shortcoming, a story has happened:
In 1884, there was a man named Waterman in the United States who worked as an employee in an insurance company. Once, he signed a huge contract with a customer. But because the pen leaked, the contract was tarnished. When Waterman went to take a new contract, the business was taken away by another competitor. To this end, Waterman was very angry and frustrated, and he was determined to create a pen that could automatically control the ink without leaking ink. After continuous research and observation, he discovered that the key lies in the relationship between ink circulation and air. He first placed a tiny hollow tube in the pen sac to make the ink flowing down automatically. Then he added a small tongue to the tip of the pen as an auxiliary device, making the little tongue like a small reservoir, intercepting and storing excess ink, so that the flowing ink is continuously supplied to the nib. use.
Wattman's pen was later successfully manufactured and fulfilled the requirements of all aspects. Once the pen was published, it was sold in the world with the amazing number of millions of dollars sold each year, which is the pen we use now.
With the development of science and technology, the pen is also constantly innovating: from the initial liquid-liquid non-replaceable pen - straight liquid non-replaceable capsule erasable pen - direct liquid type changeable pen - straight liquid type exchange Capsule erasable pen - Straight liquid large ink bag pen - Straight liquid can change the bag to wipe the blue and black pen, step by step, please look forward to the jig to bring you a more wonderful pen!
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