HP 21 Black Original Ink Cartridge

Print sharp text and graphics

Crisp, sharp results every time you print.

Print polished, professional documents with laser-quality black text. HP ink cartridges are designed to work with your HP printer for the best results.

HP 21 Ink Cartridge, black

HP 21 Black Original Ink Cartridge

Print laser-quality black text in the home; great for educational projects, homework assignments, e-mail and letters, financial and household management

Basic printing in text and graphics, low-volume printing

Laser-quality black text

Pigmented black inks provide crisp sharp text for your letters and reports—documents you can be proud of from your HP printer. Pigmented black inks provide crisp sharp text for your letters and reports. Keep your documents for a long-term reference. Printed text from this HP ink remains dark and sharp longer than many plain papers. Even aging yellowed reports are readable and text remains black. Keep your documents for a long-term reference. Text remains clear longer than many plain papers. HP quality and reliability. Industry-leading research and development, design, manufacturing and testing processes ensure the highest quality ink cartridges for your worry-free use. HP quality and reliability ensures your printing tasks are easy and results are genuine HP quality.

Reliable printed results

Designed together to work together—HP inkjet printing supplies and printers are designed to produce consistently great results every time you print. A precision-engineered and tested system of supplies and printers designed together to work together. HP inkjet printing supplies and printers are designed to produce consistent results every time. Results you can count on across a broad range of plain papers and speciality media. Print greeting cards, homework assignments, letters, e-mail, information from the Internet, and reports with confidence. Results you can count on across a broad range of plain papers and speciality media. HP quality and reliability. Industry-leading research and development, design, manufacturing and testing processes ensure the highest quality ink cartridges for your worry-free use. HP quality and reliability ensures your printing tasks are easy and results are genuine HP quality.

Easy to use

Supplies are easy to select, replace, and install. The printer is designed for easy supplies access so that installation and replacement are quick and easy. Supplies are easy to select, replace, and install. Save time and money with on-screen ink-level indicator in your printer software. Check your printer toolbox anytime to see whether you need to replace an inkjet cartridge. Alerts proactively notify you when ink is running low so you can purchase a replacement cartridge. Save time and money with on-screen ink-level indicator in your printer software. HP quality and reliability. Industry-leading research and development, design, manufacturing and testing processes ensure the highest quality ink cartridges for your worry-free use. HP quality and reliability ensures your printing tasks are easy and results are genuine HP quality.