Canon PRO-10 Series Manual page 701

Setting Margin Values
Set margin values. The image size changes according to the margin values.
1.
Set the top, bottom, left and right margins in Margins.
Set the margin values by moving the sliders for top, bottom, left and right.
The image size is enlarged or reduced according to the margin values.
Important
When a cropping frame is set for the image, the image will be cropped according to the margin
values instead of being enlarged or reduced.
Note
You can also set by entering a value directly into the text input box.
For Bordered (x1), you can change the margin values by dragging the image in preview directly.
For layouts other than Bordered (x1), you can change the margin values by dragging the gray
lines.
The available range of margin values varies depending on the selected paper size.
Setting According to the Paper
You can place an image in the center of the paper or place it with even margins on the left and right.
1.
Select an image alignment from Alignment or click Align with Page Margins.
When an image alignment is selected from Alignment, the image will be aligned accordingly at the
current image size.
When you click Align with Page Margins, the image will be placed after being enlarged to the
maximum size at which it can be printed in a bordered layout.
Note
Align with Page Margins can be set only when Alignment is None.