The Epson 664 black ink bottle. According to the official website of Epson, the 664 black ink bottle has a capacity of 70 ml and is compatible with the following printers: Epson Expression ET-2500 EcoTank All-in-One Printer, Epson Expression ET-2550 EcoTank All-in-One Printer, Epson Expression ET-2600 EcoTank All-in-One Printer, Epson Expression ET-2650 EcoTank All-in-One Printer, and Epson WorkForce ET-4500 EcoTank All-in-One Printer 1. The ink is dye-based and is specially formulated to deliver prints of outstanding quality 2. Epson strongly recommends the use of genuine ink to ensure optimal print quality and performance. Use of non-genuine ink could cause damage not covered under the printer’s limited warranty 1.