MFC-J3720 FAQs & Troubleshooting MFC-J3720 Not your product? Sort by: Updated Date Popularity 2 Results 1. 01/06/2023 Delete print jobs from the print queue. 2. 04/06/2014 When selecting 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