Interchangeable Black Ink - the availability of matte black ink is crucial for photo and fine art printing. The user has the ability to choose regular or matte black ink, depending on the media. The regular black ink has been encapsulated with polymer coating optimized for printing on glossy surface. However, for matte surface, polymer interferes with the surface treatment of matte coating, giving it a duller look. Matte black has no polymer coating, which is optimum for matte surface.