The Hewlett Packard HP 21 Black Inkjet Print Cartridge combines patented ink formulations with advanced inkjet print cartridge technology to ensure crisp, laser-quality black text every time you print. HP pigmented black inks provide crisp sharp text for your letters and report documents.
Printed text from this HP black ink cartridge remains dark and sharp longer. Results you can count on across a broad range of plain papers and specialty media. You can print greeting cards, homework assignments, letters, e-mail, and reports with confidence.
