Epson Light Black Ink Cartridge for use in Epson Stylus Pro 3800 machines. OEM Ref - C13T580500. For an inkjet cartridge that can provide professional-quality results from your Stylus Pro 3800 large format printer, you need this Epson T5807 Light Black Cartridge. Epson has worked tirelessly to make sure that its cartridges get the best out of their printers, providing prints that no compatible cartridge can attain. This cartridge is packed with 80ml of light black ink for vibrant and long-lasting print output with Epson's proprietary UltraChrome K3 ink.