Canon MG3500 series Online Manual page 18

It is recommended to set the slider at the second position from the right for most
cases.
Important
When the Amount of Extension slider is set to the rightmost position, the back
side of the paper may become smudged.
4. Complete the setup
Click Print.
When you execute print, the data is printed without any margins on the paper.
Important
Borderless printing only supports specific paper sizes. Make sure to select a paper
size with the wording "(borderless)" from the Paper Size.
When borderless printing is enabled, Envelope, High Resolution Paper, and T-Shirt
Transfers appear grayed out and are unavailable in Media Type list of Quality & Media
of the pop-up menu in the Print dialog.
Print quality may deteriorate or the sheet may be stained at the top and bottom
depending on the type of paper used.
When the ratio of the height to the width differs from the image data, a portion of the
image may not be printed depending on the size of the media used.
In this case, crop the image data with an application software according to the paper
size.
When scaled printing or page layout printing is enabled, you cannot perform
borderless printing.
Note
When Plain Paper is selected from the Media Type menu of the Quality & Media,
borderless printing is not recommended.
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