The pen can write mainly because it can put ink and water out.

1. Ink principle

As long as the ink sac is inserted into the pen, it will open.

This doesn't need to be explained.

Differential pressure ink.

There are many ways to apply ink by pressure difference, but the principle is the same.

After squeezing the air out of the pen bag, the air pressure in the pen bag is less than that of the outside world.

The outside air pressure squeezed the pen water in. ,

Common differential pressure inks include piston ink, pull rod ink, pressure bag ink, and so on.

2. The principle of pen effluent

The pen can write words, and the ink will not be cut off, nor will it cause a mass of ink on the paper because the effluent is too large.

In fact, it is not an easy task.

The surface tension of the ink needs to be well controlled, which is about the same as gravity.

One of the mysteries of pen water is the tongue:

The function of the tongue is to store excess ink and supply the tip of the pen.

Once a large amount of ink flows out of the pen bag due to air pressure and vibration, the vertical and horizontal groove lines on the tongue play the role of "blocking flood and storing water".

Once the pen tip runs out of water, the tongue will continue to provide the pen tip with its stored ink.

The main function of the tongue is to stably and smoothly transport ink from the ink sac (or cartridge) to the tip of the pen and act as the base for fixing the tip of the pen.

There are many brands of pens, the more famous ones are introduced below.

1. Pike

Even people who have never touched pens must have heard of Parker pens.

This brand of pens is relatively slim and suitable for both men and women.

And the pen tip of this brand can be changed at will, so you don't have to worry about the problem that the whole pen will be useless if the pen tip is broken.

2. Ling Mei

Many of the pens of this brand are very lightweight, and many designs are also very trendy.

Hand-fitting styling designs are also designed where the pen is held, and people will feel very comfortable when using it for writing.

Can cause discomfort in the fingers. At the same time, each of its pens is very simple and atmospheric, and there is no extra pattern on the outside of the pen.

3. Bailijin

The manufacturing process in Germany is very exquisite, and this pen from Germany is also very exquisite.

Each tip of this brand of pen is engraved with the fine pattern of its own brand, and at the same time, it can also let the ink flow out smoothly.

Write more smoothly, many people like to use this pen as a signature pen.

4. Bailue

This is a very famous pen brand in Japan, there is a pen with a transparent pen case, you can always see the ink content in the pen, can add ink in time, to avoid the embarrassment of the pen can not produce ink.

At the same time, the pen cover adopts the design of round head, which prevents the pen tip from being damaged.

The price of the pen is not cheap, so take good care of it and clean it regularly.

Under what circumstances do you need to clean the pen?

1. Because of the problems of blocking pen, flying white and uneven handwriting caused by not using for a long time.

2. The pen is going to be put away for a long time.

3. Changing other pen water is not limited to changing color, it is also recommended to clean the pen first when changing different types of pen water of the same color.