Epson engineered the T157420 157 Photo Yellow Ink Cartridge for the Epson R3000 Printer. Epson utilized their UltraChrome K3 technology to produce deeper, richer tones. With fine art printing in the front of their minds, Epson developed yellow for drawing out the true feeling of your print. The bright yellow of the sun's rays and the depth of a tropical bird's feather all become more realistic with the Epson yellow for the R3000. Control your prints with the Epson advanced tones.