Epson engineered the 157 Light Light Black 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 photo black to be of photo quality. The deepness of your shadows can set the mood for what your picture is saying. Create phenomenal monochrome prints with Epson's three-level black technology. You will be sure to get the exact degree of black that your picture requires. Control your prints with the Epson advanced tones.