This genuine Canon ink tank is for use in Canon imagePROGRAF PRO-300 A3 Colour Printers. Achieve uniform surface glossiness with this Chroma Optimiser. The clear ink is applied on top of pigmented inks for a smoother finish which expands colour gamut and makes black colours deeper and more vivid. Printing with a Chroma Optimiser reduces the diffuse reflection of light, producing a truer print colour. Page yield of up to 272 6 x 4 inch photos.