Press the ink
Can be divided into alcohol ink whiteboard pen, water-based ink whiteboard pen. The whiteboard pens on the market are generally alcohol-based whiteboard pens. Due to technical problems, the water-based whiteboard pens are still in the exploratory stage due to the immature process and unstable quality. The use of water-based whiteboard pens is also related to the region. It is better to use in dry climates in the north. If the air humidity is high in the rainy season in the south, it will affect the use of water-based whiteboard pens.
By structure
It can be divided into disposable whiteboard pen, water-fillable whiteboard pen, straight liquid type whiteboard pen, air pressure type whiteboard pen and so on. The structure of a whiteboard pen is roughly composed of a pen head, a cotton core, a pen holder, a pen cap and a pen tail. Disposable whiteboard pens are favored by people because of their economical utility and low development cost. The disadvantage is that they are thrown away after use, resulting in a waste of resources. The structure of the water-refillable whiteboard pen is similar to that of the disposable whiteboard pen, except that there is an unscrewing device at the front end of the pen barrel, which can be unscrewed and added to the whiteboard pen after the ink is written. The straight liquid type whiteboard pen has disposable and replaceable cores. The disposable structure is simple, and the entire pen holder can be filled with ink. The pneumatic whiteboard pen has a complex structure, with an air bag and a spring device in the pen barrel, which has a large ink storage capacity and smooth writing. Some domestic researchers have removed the spring device in the whiteboard pen, and the function of the spring can be realized through the rubber bowl.
