MFC-J3720 FAQs & Troubleshooting MFC-J3720 Not your product? Sort by: Updated Date Popularity 3 Results 1. 03/09/2018 Make a two-sided copy of an ID card. 2. 24/12/2014 Print using only the black ink cartridge when the Color cartridges have run out. 3. 23/07/2013 Make a two-sided copy. (Duplex) Copy FAQs & Troubleshooting