Canon BJC-2100 Series User Manual page 199

I Setting the BJC-2100 as the Default Printer
When you are using more than one printer, you may find it convenient to set the BJC-2100
as the default printer.
Windows
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Macintosh
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On the Windows desktop, click the Start button, point to Settings, and
click Printers.
When the Printer window opens, click the BJC-2100 icon to highlight
it.
Select Set As Default from the File menu.
Select Chooser from the Apple menu.
Select BJC-2100.
Printer Does Not Start or Stops Mid-job
Troubleshooting 199