Canon LBP6780x - Printing Is Uneven

0978-0KR
Perform one of the following solutions according to the cause.
<Cause 1> Paper is too moist or too dry.
Solution
Replace the paper with new paper in an unopened package.
"Precautions for Paper"
<Cause 2> The toner cartridge is almost out of toner.
Solution 1
Take the toner cartridge out of the printer, shake it gently five or six times to evenly distribute the toner,
and then reinstall the toner cartridge.
"Before Replacing the Toner Cartridge"
Solution 2
Replace the toner cartridge with a new one.
"Toner Cartridge Replacement"
<Cause 3> The drum in the toner cartridge is deteriorated.
Solution
Replace the toner cartridge with a new one.
"Toner Cartridge Replacement"
Printing Is Uneven
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