The default printer is the printer that all print jobs are sent to by default unless otherwise specified. This means that if you don’t specify a new printer when printing a document, the default printer will be used.
How to set a default printer in Windows 10
To set a default printer in Windows 10, open the Settings app and click on Printers. On the Printers page, Click on the Add a Printer link at the top of the page. In the Add Printer window, enter your details for the new printer. Select your desired print quality, and click on the Print button. Your new printer will now be selected as your default printer.