Canon LBP7210Cdn Manual page 467

Solution Replace with paper that meets printing specifications.
"Usable Paper and Unusable Paper"
Cause 2 The paper is moist.
Solution Replace the paper with new paper in an unopened package.
"Loading Standard Size Paper (Other Than Index Cards and Envelopes)"
"Loading Index Cards"
"Loading Envelopes"
"Loading Custom Size Paper (Non-Standard Size Paper)"
Cause 3 The drum in any of the toner cartridges has deteriorated.
Solution Replace the toner cartridge with a new one.
"Replacing Toner Cartridges"
Residual Images Appear on Non-printed Areas
Cause 1 Appropriate paper is not being used.
Solution Replace with paper that meets printing specifications.
"Usable Paper and Unusable Paper"
Depending on the printing pattern or paper type, images on the second previous page may
Cause 2
be printed faintly on continuous printing.
Solution 1 Perform the following procedure in the printer driver.
1. Display the [Finishing] sheet.
2. Click [Advanced Settings].
3. Set [Special Print Mode] to [Special Settings 12].
Normally, use the printer with [Special Print Mode] set to [Off]. Specify [Special Settings
12] only if the described problems occur.
Solution 2 If Solution 1 does not solve the problem, perform the following procedure in the printer
driver.
1. Display the [Finishing] sheet.
2. Click [Advanced Settings].
3. Set [Special Print Mode] to [Special Settings 13].
Normally, use the printer with [Special Print Mode] set to [Off]. Specify [Special Settings
13] only if the described problems occur.
Cause 3 Residual images appear depending on the printer status.
Solution Perform the following procedure in the printer driver.
1. Display the [Finishing] sheet.
2. Click [Advanced Settings].
3. Set [Special Print Mode] to [Special Settings 4].
Normally, use the printer with [Special Print Mode] set to [Off]. Specify [Special Settings
4] only if the described problems occur.
IMPORTANT
Precautions when specifying [Special Settings 4]
Toner fixation may deteriorate. In this case, do not specify
[Special Settings 4].