Epson T048140 Inkjet Cartridge Black for use with R300/RX500/R200/RX600. Page Yield - 570. For a cartridge that is guaranteed to provide you with fantastically clear and sharp results with every use, you need the Epson R300 Black Inkjet Cartridge. Epson is an expert at making sure that its ink works perfectly with its machines, giving you results that are crisp and clear. Each cartridge is easy to use, slotting into your printer without mess or hassle. The cartridge gives quickly printed, precise documents and can deal with text and images with equal competence.