Canon imageCLASS LBP122dw User Manual page 297

* When you select [Print Side Priority], the printing speed for 1-Sided printing will decrease.
Step 3: Checking the Special Processing Setting
Is [Special Processing] Enabled?
If so, setting [Special Processing] below to [Off] may improve the problem.
● [Reduce Ppr. Sticking at Output]
● [Envelope Flap Closing Prevention]
● [Paper Curl Correction]
[Home] screen on the operation panel
Quality] [Special Processing]
Troubleshooting
[Menu] [Adjustment/Maintenance]
290
[Special Processing](P. 221)
[Adjust Image