MFC-J4420DW FAQs & Troubleshooting MFC-J4420DW Not your product? Sort by: Updated Date Popularity 2 Results 1. 06/01/2023 Delete print jobs from the print queue. 2. 06/29/2015 When choosing grayscale printing in the printer driver, does this use only the black ink or all the ink cartridges to produce the grayscale image? Print FAQs & Troubleshooting