Oki C130n Instruction Manual page 128

Important!
Do not touch the PC drum and the transfer belt on the imaging
cartridge.
Position the removed imaging cartridge as shown in the
illustration.
Be sure to keep the imaging cartridge horizontally horizontal and
place it where it will not become dirty.
Do not leave the imaging cartridge removed for more than
15 minutes, and do not place the removed imaging cartridge in a
location where it would be exposed to direct light (such as
sunlight).
128 - C130n User's Guide