Oki MC160 User Manual page 159

a cold place to a warm, humid place, condensation may occur, degrading
print quality. Allow the toner to adapt to the environment for about one
hour before use.
Level during handling and storage.
Do not hold, stand or store cartridges on their ends or turn them upside
down; the toner inside the cartridges may become caked or unequally
distributed.
Away from salty air and corrosive gases such as aerosols.
Replacing Consumables 7-3