Smart choice. HP 90 Ink Cartridges produce consistently outstanding results from accurate line drawings to photo-quality color images. Patented dye color and pigment-based black HP ink formulations are designed together with HP Designjet 4000 Printers for fast, reliable, cost-effective performance. To ensure consistent results, HP Smart Printing technology makes automatic adjustments to optimize print quality and enhance reliability. You get sharp black line accuracy, rich color, and smooth transitions. (Using genuine HP supplies ensures availability of all HP printing features). With 2 sizes of each color ink cartridge, HP printing supplies offer a flexible and cost-effective solution. HP\'s modular ink delivery system enables individual replacement of supplies and allows you to select the cartridge size that fits your usage needs. And HP Smart Printing technology provides alerts when ink is low or out. Compatible With HP Designjet 4020 1067 mm Printer (CM765A) HP Designjet 4020ps 1067 mm Printer (CM766A) HP Designjet 4520 1067 mm Printer (CM767A) HP Designjet 4520ps 1067 mm Printer (CM768A) HP Designjet 4520 HD Multifunction Printer (CM769A) HP Designjet 4520 Scanner (CM770A) HP Designjet 4500 Printer (Q1271A) HP Designjet 4500ps Printer (Q1272A) HP Designjet 4000 Printer (Q1273A) HP Designjet 4000ps Printer (Q1274A) HP Designjet 4500mfp (Q1276A)