Ink is the most consumable material for printers, and without ink, it is impossible to print materials. The quality of ink determines the printing effect and also has an impact on the printer itself. The quality of ink is largely determined by its stability. If the stability is poor, the ink quality will inevitably be poor. So how to test the stability of printer ink?

　　1. High temperature testing

　　After placing the printer ink in a high-temperature environment (55 ℃ to 70 ℃) for one week, restore it to room temperature of 20-25 ℃ and let it stand for 24 hours. Conduct a continuous printing test on the machine for no less than one hour, and ensure that the ink does not line or change color during continuous printing.

　　2. Low temperature testing

　　After placing the ink of the tablet printer in a low-temperature environment (-37 ℃ to -46 ℃) for one week, restore it to room temperature of 20-25 ℃ and let it stand for 24 hours. Conduct a continuous printing test on the machine for at least one hour, requiring the ink to continuously line and not change color during continuous printing.

　　The reason for conducting high and low temperature tests on ink in tablet printers is that placing ink in extreme high or low temperature environments can accelerate the exposure of ink instability, and can also test the stability of ink transportation and storage in long-term high and low temperature environments.

　　3. Light resistance test

　　The light resistance of ink in tablet printers depends on the light resistance of the selected pigment itself, which can be tested using a Q-aging tester and an X-Rite colorimeter.

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