1. Do not touch the surface of the OPC drum with your hands.

2. It is strictly forbidden to use chemical reagents (such as alcohol) to wipe the OPC drum surface.

3. Do not hit the OPC drum surface with hard objects.

4. Be careful not to bring office supplies such as staples into the printer with the printing media.

5. After removing the toner cartridge or OPC drum from the machine, it should be placed away from light. It is best to cover it with newspapers or other things.