MFC-J2720 FAQs & Troubleshooting MFC-J2720 Not your product? Sort by: Updated Date Popularity 2 Results 1. 23/06/2014 One or more of my colors are not printing (blank). 2. 22/11/2010 The faxes I send are always received with a vertical black line. Fax FAQs & Troubleshooting