Start cups and click in to Administration -> Find New Printers
Select Brother MFC-7420 (USB#1). Choose the Brother MFC-9600 Foomatic/hl1250 (recommended) printer driver.
Brother_MFC-7420_USB_1 Description: Brother MFC-7420 Location: Local Printer Printer Driver: Brother MFC-9600 Foomatic/hl1250 (recommended) Printer State: idle, accepting jobs, published. Device URI: usb://Brother/MFC-7420
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