Canon IR1600 Reference Manual page 111

7
With the side with the label facing up, insert the new toner cartridge toward the
direction of the arrow while grasping its handle.
8
Hold the toner cartridge with one hand, and remove the seal by pulling it out with the
other hand.
IMPORTANT
Pull out the seal slowly, otherwise the scattered toner may soil your clothes, etc.
Pull out the seal completely, otherwise the print error may occur.
Pulling the seal upwards or downwards may break the seal. If the seal could break inside the toner cartridge and
cannot be removed completely, the toner cartridge may not be used.
Do not stop pulling the seal until it is removed completely from the toner cartridge because the toner may scatter and
printing quality may deteriorate.
Throw away the seal after removing it from the toner cartridge.
Replacing the Toner Cartridge
5
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