Canon Color imageCLASS MF8170c Basic Manual page 98

IMPORTANT
Place the toner cartridge on a flat surface, then pull out the
sealing tape (Approx. 45 cm in length) while supporting the toner
cartridge.
Hold the tab on the sealing tape and pull it out straight.
8
CAUTION
If the sealing tape is pulled out forcefully or stopped at midpoint, toner may spill.
If toner gets into your eyes or mouth, wash it away immediately and consult a
physician.
8-10 Replacing the Cartridges
Do not touch or hold the developing roller. The image quality may deteriorate if you do.
Do not apply shock to the toner cartridge memory or bring it near magnetic waves as this
may result in damage to the machine.
Toner cartridge
memory
Developing roller
Keep the protective cover with which the cartridge from removed. It may be required
when taking out the toner cartridge for machine maintenance.