Samsung SF4500 - Manual (Page 76)

3.14 Maintenance
Printer Cartridge Maintenance
To get maximum benefit from your print cartridges:
¥ Do not remove a print cartridge from its packaging until you are ready to
install it.
¥ Do not refill print cartridge. The warranty will not cover damage caused
by using refilled cartridges.
¥ Store the print cartridge in the same environment as the printer.
¥ Do not remove a print cartridge from the printer except to replace it,
clean it, or switch between colour and black. Immediately replace the
print cartridge or store it in the storage unit. The print cartridge will not
print correctly if removed from the machine and left exposed for an
extended period.
¥ When switching between colour and black print cartridge, store the
unused cartridge in the print cartridge storage unit.
¥ If you have an opened print cartridge you are not currently using and do
not have an available print cartridge storage unit, store it in an airtight
plastic bag. Do not leave it exposed for an extended period.