HP NO 337 Black Inkjet Cartridge. To fit Deskjet 5940, Photosmart 8050. OEM Ref - C9364EE. This cartridge uses special HP Vivera ink for darker, crisper black text that rivals the quality you'd get from a laser printer. Smear-resistant ink lets you highlight and write on documents without unsightly marks, and it lasts longer without fading as well. This cartridge is packed with enough ink to print up to 400 pages.