1. Negative pressure ink supply is a new type of inkjet printing technology. Compared with the traditional positive pressure ink supply, it has a better printing effect, higher fluency, and more ink saving.

2. The principle of negative pressure ink supply is to control the flow of ink by using the air pressure difference in the ink cartridge to achieve accurate control of the ink. When the ink is sprayed, due to the design characteristics of the inner cartridge, the ink will quickly flow back into the cartridge, thus avoiding the problem of ink pool, and because of the use of negative pressure control, the ink flow is more natural.

3. Compared with a positive-pressure ink supply, a negative-pressure ink supply has more advantages.

First of all, due to the use of natural reflux design, the nozzle blockage phenomenon caused by the ink pool problem is avoided, thus extending the life of the print head.

Secondly, the negative pressure ink supply technology can more accurately control the speed and accuracy of the nozzle ink jet, so as to achieve higher printing resolution and better printing results.

Finally, due to the use of air pressure differences to control the inkjet, the amount of ink used is also better controlled, resulting in a more economical and environmentally friendly printing method.