Canon GP160DF Service Handbook page 12

CHAPTER 1 MAINTENANCE AND SERVICING
:
Caution
Do not incinerate used cartridges as there is a risk of bursting or explosion.
When a used cartridge must be disposed of, dispose of it as nonflammable trash.
Reference:
The cartridge will perfectly fit for use for copying if placed in darkness for 5 minutes
after exposure to 1,500lux intensity light (normal light) for 5 minutes,. However, do not
expose the cartridge to direct sunlight. The sun's rays have a light intensity ranging
from approximately 10,000lux to 30,000lux.
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