Canon LBP-2510 User Manual page 59

6
Remove a new cartridge from the box, then remove it from the
protective bag.
Cut the protective bag open with scissors, so as not to damage the cartridge.
IMPORTANT
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58 Replacing the Cartridge
Keep the cartridge in the box until it is ready to be installed.
Do not throw away the protective bag and box in which the cartridge came in. It
may be required for storing the cartridge during printer maintenance.