Canon i-SENSYS MF729Cx Important Safety Instructions And Installation Manual page 632

This symptom occurs if a margin is set to none in the printer driver. A margin of 5 mm or less around the edge of
paper or 10 mm or less around the edge of envelopes is not printable with the machine. Make sure to have margins
around the document to print.
[Finishing] tab
Print Density Is Uneven
Is the toner cartridges consumed?
Check how much the amount remaining in toner cartridges is left, and replace the toner cartridges as necessary.
Replacing Toner Cartridges
Printouts Become Lightly Colored
Does the document have background color, is it stained, or are you copying a document such as a newspaper
that is printed on thin paper so that text or images on the other side are visible through the paper?
Check the document and then adjust the density to the correct settings.
Adjusting Density
Is the toner cartridges consumed?
Check how much the amount remaining in toner cartridges is left, and replace the toner cartridges as necessary.
Replacing Toner Cartridges
[Advanced Settings] [Expand Print Region and Print] [Off]