People usually think of pen or brush ink first, but with the wide application of printing and dyeing and inkjet output technology, inkjet printing and printing ink are actually the most used.
Common colors of ink are red and black, such as ink and blue and black. Red ink is generally used to correct homework, and the scope of use is relatively small. Blue-black ink turns blue first and then black. Not easy to fade, writing fluency. It is an ink commonly used in people's study and work. Carbon ink is the most ideal black ink. Black ink is shiny and stands out on paper. Used to write pen words or pen calligraphy works, the effect is very good.