1), To avoid use and storage in the high humidity high temperature cold environment. Do not tear the seals before use the toner cartridge , otherwise the toner will soon in wet condition and  become agglomeration, these will affect the print quality and sometimes will cause the print color shallow. If the cartridge stores in too hot or too cold place too long, we must return to room temperature for a short time before use.

2),Do avoid exposure the toner cartridge to bright light for a long time. Do not tear the plastic bags when the toner cartridges are not using, especially do not open the drum on the drum light barrier. If let continuous exposure into the bright light for more than ten minutes, the drum will be scrapped.

3), When replacing the toner cartridge, it is the best if you use the vacuum cleaner to clean the place where the toner cartridge is put, use a soft cloth to clean the accumulation of paper dust and toner, the exposed electrical contact pads is available to use cotton swab dipped in alcohol to wipe., to maintain good electrical contact.

4), Do not attempt to turn the OPC drum core by hand, OPC drum core must pay attention to the direction of rotation, if rotating in the wrong direction, parts can be damaged, and it will causing the print or print smudges powder leakage.

5), When select the paper, do not use print paper if it wrinkles, uneven cut or too thick, tough, rough paper, etc., it may affect the print quality and abrasion drum.

6), The new toner cartridge should be shaken 6-8 times by horizontally, loosen the toner and make them distribution. And then pull out the sealing strip, otherwise, the toner may be unevenly.

7), Ensure cartridge away from the monitor, hard drive, or any other magnetic material.

3. We promise to do: