HP Printer Smart Tank (581) - The HP Printer Smart Tank (581) is a multifunction ink tank printer designed for home users and small offices. It combines printing, copying, and scanning capabilities in one compact device. Refillable ink tanks provide high page yields and low printing costs for economical operation. Built-in Wi-Fi and mobile printing support allow convenient wireless printing from multiple devices. It is a reliable and cost-effective solution for everyday document and color printing.