HP 21 Black Original Ink Cartridge C9351AE

The HP 21 Black Original Ink Cartridge (C9351AE) provides laser-quality black printing using genuine pigment-based ink. Designed for select HP DeskJet, OfficeJet, Fax, and PSC models, it ensures crisp text and sharp graphics with reliable performance. The integrated smart chip delivers accurate ink-level tracking and seamless printer communication. With a yield of approximately 190 pages, this cartridge is ideal for daily home and small-office printing, and it’s fully recyclable via HP’s Planet Partners program.

Product Features

Pigment-based ink for professional results

Delivers sharp, fade-resistant black text with high optical density, perfect for reports, letters, and everyday printouts

Smart chip technology

Built-in chip enables precise ink-level alerts and ensures seamless printer compatibility.

Easy drop-in installation

Quick, tool-free cartridge replacement enables hassle-free printing with no spills or alignment issues.

Reliable daily use

With a standard yield of ~190 pages at 5 % coverage, it’s tailored for regular printing tasks

Eco-conscious recycling

Participates in HP’s Planet Partners program, supporting sustainable disposal and packaging practices.

Product Specifications

• Cartridge model: HP 21 (C9351AE/C9351AN)
• Color: Black
• Ink type: Pigment‑based
• Ink volume: 5 mL
• Page yield: ~190 pages at 5 % ISO/IEC 24711
• Ink drop size: 17 picoliters
• Printhead nozzles: 416
• Print technology: HP Thermal Inkjet (TIJ 2.X Gen 1)
• Operating temperature: 15–35 °C; Storage: –15–35 °C
• Humidity range: 5–95 % RH
• Shelf life: 18 months
• OEM status: Genuine HP, new cartridge (not remanufactured)