Replace your empty HP PhotoSmart C4580 ink cartridges and start printing again. To ensure the best printing experience, we engineer our ink cartridges based on the specifications of your original HP cartridges. To certify that these discount ink cartridges for HP PhotoSmart C4580 printers perform up to industry standards for excellence, we test every cartridge before shipment. All products include a full 1-Year warranty and 100% customer satisfaction guarantee. We also provide lifetime customer support, thus providing our customers with complete peace of mind.