Pens can leave marks on white paper because ink contains coloring matter. The thicker the chromogenic substance, the more stable the chemical properties and the clearer the handwriting. However, the erasing pen uses unstable chemicals as coloring substances. When encountering air, high temperature, water and other substances, this unstable chemical substance will slowly decompose and dissipate in the air, which is irreversible.
The handwriting written by pen and ink will disappear naturally within 15 minutes to 2 days, leaving no trace, depending on the material, temperature, humidity and writing speed.
Extended data
Eraser pen, also known as automatic fading pen, originated in Japan and was originally used by magicians during magic performances. The pen is mainly used for temporary writing and marking in textile, handicraft and other industries, or for students to draft, copy copybooks, graffiti, children's paintings and so on.
This kind of erasing pen is often used by some lawless elements for economic fraud, such as signing a contract agreement to defraud corporate property; Fill in small bank notes to buy products, so that product sellers have both property and money; Write an IOU, and the IOU will become a blank sheet of paper.
counter-measure
In order to prevent such cases from happening, when signing a contract or writing a loan agreement, it is best to use a printed manuscript or copy the handwritten contract or written evidence, and ask both parties to press their fingerprints or seal. In addition, it is best to find a third party to witness, or take videos or photos to fix the initial contract, leaving electronic evidence and witnesses to prevent future disputes.
Qilu Evening News Network-Eraser's handwriting disappears and can be found back.
Baidu encyclopedia erasing pen