The reason why the pen doesn't work well and needs cleaning is because the ink siphon on the tongue of the pen is blocked by dry ink. Therefore, the key point of cleaning is to brush all the small gaps on the tongue with a fine-wool toothbrush. Or you can use alcohol cotton to wipe it repeatedly, and then put it back to its original state.
Let's learn about the pen:
The pen is a writing tool commonly used by people. The pen head is made of metal, and it is smooth, elastic and quite smooth to write. At the mouth of the pen cap or the surface of the pen tip, there are obvious trademark numbers and models. It is also divided into dip pen, tap pen and ink bag pen. Pay attention to maintenance and cleaning when using.
The pen is a kind of writing tool with metal as the pen body. It contains ink (mostly black or blue) through the hollow pen tube, and then writes through the duckbill pen through gravity and capillary action. It can be said that it is a writing tool of western calligraphy. Most pens can be refilled with ink. Generally, small bottles or straws such as eye drops are used to come to refill kit.
The earliest pen capable of absorbing ink by itself appeared in the early 2th century, and a piston was adopted to absorb ink. When the rubber bladder is used in the pen, an iron piece should be inserted into a gap to squeeze the rubber bladder to absorb ink. By 1952, there appeared a Snooker pen with a tube sticking into the ink to absorb water. It was not until 1956 that the commonly used capillary pen was invented. There are also some art pens.