The ink tip of the pen tip appears

Due to frequent use, the ink sticks and the tongues tend to accumulate some ink residue, which can be gently brushed off with a soft brush.

Other maintenance tips: In general, the most important part of a pen is at the tip of the pen, and the most taboo of the pen tip is the bump. After the pen is used up, be sure to tighten the pen sleeve to prevent the pen tip from colliding and preventing the ink from evaporating and condensing, causing the pen's water channel to be blocked or unsmooth. The accessories of the pen, such as the pen holder and the ink bag, are all easily damaged. If the pen holder is a dual-use structure of the water absorber and the ink bag, the ink bag should be used preferentially to ensure smooth water flow. Use non-precipitating ink when using the water absorber. However, after a certain period of time, these accessories will naturally be derogated, so it is necessary to change to the factory at regular intervals.

In addition, a good pen must rely on good ink to support. It is best to use ink produced by the same brand. Because good ink doesn't stain your pen. Be careful not to use black ink with a gelatin to prevent the writing structure from affecting the water. After the pen has been used for a while, it should also be cleaned once to keep the waterway open. When cleaning, remove the ink bag or ink aspirator, and immerse the tip of the pen tip and the pen in warm water until the stains soften. After inserting the water aspirator, immerse the pen tip in warm water, then hold the tail of the rotary water aspirator in a counterclockwise or clockwise direction (the compression spring type water aspirator is a continuous pressure spring piece) until the water clears. Finally, dry it with a soft cloth. It is better to wash the pen with distilled water.