Extended data:
When we choose pens, some parameters are invisible. But we can still use some skills to distinguish the quality of pens. Let's take the best-selling pen on the market as an example.
1, pen tip smoothness You can pull out the pen cover and move the pen tip on white paper. Generally, the grinding difficulty of nib is the side. We do experiments and move the pen 30 degrees to the left and 30 degrees to the right on the white paper. If it is still smooth, it means that the sliding of the pen tip is guaranteed.
2. The main reason of water leakage is that the pen container is not well sealed. We can plug the nib and squeeze the liner. If it is difficult to squeeze, it shows good water leakage resistance. Of course, water leakage resistance is a comprehensive parameter.
3. Continuous writing time and intermittent writing time are the soul of a pen. If you buy a pen, you can't guarantee continuous writing and intermittent writing, which is equivalent to waste. According to the width of handwriting, the writing time is different. But usually it takes at least 30 minutes.
4, some mechanical properties, such as pen clamping force, mechanical properties of parts, pen sleeve tension, these are all concerned by users. Generally, mechanical properties can be tested by hand without any instruments. Users can pay attention to these details when choosing. Especially some expensive pens.
For the average user, what is more concerned is the appearance of the pen. Very dazzling, it is the initial idea of ordinary people choosing pens. Like Kaiser's gift pens, there are more than 1000 arrangements to choose from. Parker also basically designs three or four new styles a month. It seems that all major pen makers have made a big fuss about the appearance.
From the user's point of view, pen selection is actually an artistic washing. Because pen makers are undoubtedly artists, they all regard pens as artistic creations. This is a taste, a luxury. This makes sense.
Buy a gold pen: the nib is made of gold and alloy, and the fountain pen with iridium particles is spot-welded at the top of the nib, which is called a gold pen. Gold nib is divided into 12K and 14K according to the gold content (composition), both of which are famous brands.
There are obvious trademark numbers and models on the mouth of the pen or the surface of the pen tip, and signs and signs such as quality inspection certificate, manufacturer's name, place of origin, inspector's name or code on the commodity packaging; There is obvious gold content steel seal on the back of the tip of the golden pen (i.e. 12K or 14K).
Reference: Baidu Encyclopedia-Pen