Examine it closely for marks of any kind. Any flaws in the drum, charge roller, or magnetic roller will show up here. Be careful not to touch the drum through the shutter door when cleaning it, expecially if the drum was recoated. The alcohol might dissolve the coating and cause major print defects. Packaging The cartridge is then be packaged in an air-tight, static free, foil bag with black inner lining to prevent light from getting in.
Drums are photosensitive and can be damaged with prolonged exposure to light.
The bag is then placed in a cartridge box with an insert to absorb shock. Because we ship the cartridges, we feel it is a good idea to further absorb the shock by floating the cartridge box inside styrofoam peanuts in a larger container. This way, if it is dropped, or if something is dropped on it during shipment, the cartridge will remain undamaged. Installation After removing the seal and rotating the cartridge to loosen the toner, the corona wire, if your cartridge uses this type of technology, should be cleaned. See our report on cleaning the corona wire.