Compatible Replacement Maintenance Box For Epson- E-3661 Replacement Maintenance Box For Epson- E-3661 Compatible Printers: Expression Premium XP-6100 Small-in-One Printer Expression Premium XP-6000 Small-in-One Printer Expression Photo XP-8600 Small-in-One Printer Expression Photo XP-970 Small-in-One Printer Expression Photo HD XP-15000 Wide-format Printer Expression Photo XP-8500 Small-in-One All-in-One Printer Our American made " Ultra Pro True Color Ink " prints roll to roll or sheet to sheet with a consistent color match. Our quality control techniques including surface tension, viscosity, pH, conductivity, specific gravity, and color match by spectrophotometer. We test new ink in real-time test modes. Our compatible inks are rigorously tested to meet and exceed the highest customer expectations by means of ISO 24711 and other print performance criteria. LEGAL NOTICE Epson, Brother, Canon, HP, Sawgrass, and other manufacturer brand names and logos are registered trademarks of their respective owners who have no association with or make any endorsement of the products or services provided by inkproducts.com Any use of a brand name or model designation for a non-OEM cartridge or product is made solely for purposes of demonstrating compatibility. Inkproducts.com makes no claim of affiliation, endorsement, or sponsorship of any of its products or services (including this site and all products and services referred to on this site) by any other company or person.