Canon imagePROGRAF TA-20 MFP 24" Large Format Printer with L24ei Scanner and Stand Kit - Manual (Page 574)

6. Select roll paper width
If you selected a roll paper for Paper Source , set Roll Paper Width to the width of the roll paper
loaded in the printer.
7. Print document in the center of paper
Select the Print Centered check box on the Layout tab.
8. Complete the setup
Click OK .
When you print, the document is printed in the center of the paper.
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