Hello evie, the Epson Workforce WF-2930 is designed to use only genuine Epson-brand ink cartridges. Other brands of ink cartridges, and ink supplies, are not compatible, and even if described as compatible, may not function properly or at all. Please ensure you have installed Epson genuine cartridges. If you are still having problems, you may contact our Epson Advanced Support Team at (800) 241-5794; Hours: Monday – Friday, 7 a.m. to 4 p.m. (PT). Sincerely, Alissa A. – The Epson Team