Canon PRO-300 Series Online Manual page 476

* Clear Disable paper width detection when printing from computer check box again once printing is
complete, and then click OK.
• For macOS:
Check the message on the printer's LCD to clear the error. Then check the Paper Size setting in the Page
Setup dialog and load paper that is the same size as the setting and try printing again.
Set the printer not to detect the width of the paper using the Canon IJ Printer Utility2.
To set the printer not to detect the width of the paper, open the Canon IJ Printer Utility2, select Custom
Settings in the pop-up menu, select Disable paper width detection when printing from computer check
box, and then click Apply.
To open the Canon IJ Printer Utility2, see
* Clear the Disable paper width detection when printing from computer check box again once printing
is complete, and then click Apply.
Are media type and paper size specified properly in the printer driver?
Check9
When the media type is specified to Photo Paper Pro Premium Matte A, Premium Fine Art Smooth, or Matte
Photo Paper in the printer driver, specify a paper size from the following size that has wide margins.
• A4 (Margin 25)
• Letter (Margin 25)/US Letter (Margin 25)
• A3 (Margin 25)
• A3+ (Margin 25)
• 11"x17" (Margin 25)
• 210x594mm (Margin 25)
Important
• By canceling the safety margin regulation with the following method, you can print with normal paper size.
• For Windows:
Click Print Options on Page Setup sheet of the printer driver. Then select Cancel the safety margin
regulation for paper size check box in the dialog that appears.
• For macOS:
Select Cancel Margin Regulation check box in Advanced Paper Settings in the Print dialog.
If you print with normal paper size, conditions such as paper abrasion may cause paper stains or
deterioration of print quality depending on the environment. We recommend that you print with a paper size
that has wide margins.
Is your printer's printer driver selected when printing?
Check10
The printer will not print properly if you are using a printer driver for a different printer.
• For Windows:
Make sure "Canon XXX series" (where "XXX" is your printer's name) is selected in the Print dialog box.
Opening the Canon IJ Printer
476
Utility2.