For all of our archival pigment prints, we use Epson UltraChrome K3 ink technology, which represents the standard by which all other professional level ink technologies are measured. Epson's all new 8-color pigmented ink set incorporates three unique levels of black, which along with new color pigment technology, dramatically improves both color and black and white prints.Incorporating high density pigments, Epson UltraChrome K3 produces prints with an extremely wide color gamut allowing the reproduction of colors that were originally envisioned at the point of capture. With its expanded color gamut and breakthrough 8-color system, no other ink set can reproduce the three dimensional lifelike quality and stunning photographic feel of Epson UltraChrome K3.Utilizing a unique three level black ink technology, Epson UltraChrome K3 ink significantly improves overall gray balance while enhancing midtone and highlight detail yielding a smoother tonal range. And by virtually eliminating metamerism and bronzing, both black and white and color prints can be produced with the look and feel of a traditional photograph while utilizing all the advantages of a digital workflow.Epson UltraChrome K3 ink incorporates High-gloss Microcrystal Encapsulatio Technology along with unique screening algorithms and Light Light Black ink that significantly reduces gloss differential. There is no longer any compromise for professionals that require glossy prints that have excellent longevity and durability.With two different black ink modes - Photo Black and Matte Black - Epson UltraChrome K3 provides an innovative solution to optimize the black ink density for various media types. Photo Black ink can be used for all media types with professional quality results. The optional Matte Black ink significantly increases black optical density when printing on matte and fine art type papers.Epson UltraChrome K3 ink has improved print permanence characteristics that provide lightfastness ratings of up to 108 years for color and over 200 years for black and white under industry accepted display conditions.