No.90 Black Ink Cartridge (775ml) for HP Designjet 4000,Designjet 4020,Designjet 4500 Printers. From sharp lines to photo-quality images-HP 90 printing supplies are designed together with your Designjet printer to get the job done right. Patented dye-based color and pigment-based black HP inks produce accurate lines and images. And interactive HP Smart technology makes automatic adjustments to optimize print quality and enhance reliability. (Using genuine HP supplies ensures availability of all HP printing features). With two sizes of each cartridge, HP printing supplies offer a flexible and cost-effective solution. The new HP 90 Black Ink Cartridge for high-volume printing means fewer interruptions for changing cartridges. 3-ink Multipacks provide savings and convenience. And two sizes of each cartridge let you match the needs of the project. An excellent value-the quality and reliability you expect from HP with more choices and fewer interruptions to save you time and increase your productivity.