Formulated to deliver the highest performance with even greater image quality, wide color gamut, ultra sharp line drawings & highly accurate color reproduction for photo-quality color images. DST ultra premium ink is manufactured to the highest standards specifically for Hewlett Packard's Designjet 4000/4500 Printer series. Produce consistently outstanding results from dye color. Our color's are a dead on match of the original & since it's so incredibly close to the original there's no need to change the color profile or flush the lines, It's Plug & Play just like the original.