HP DeskJet F2120 Ink Cartridges
Your HP DeskJet F2120 uses 21 (C9351AA) ink cartridges for daily document printing. Ink Depot has been supplying reliable consumables for this compact home printer since Jan 2008. Replacing standard 21 (C9351AA) black cartridges when text turns faint ensures clean monochrome output for everyday household paperwork. Our 4.8 Google rating proves it: we consistently supply premium cartridges backed by rock-solid reliability.
Expected page output and replacement cycles
Page yields for thermal inkjet cartridges are measured under ISO/IEC 24711 standard testing using continuous print runs. Actual page output varies depending on page coverage, document density, and how frequently light household print jobs occur.
| Cartridge Number | Type | Colour | Page Yield | Cost Per Page |
|---|---|---|---|---|
| 21 | Standard | Black | 185 | $0.24 |
Cost Per Page = Total Cartridge Price ÷ Page Yield (at 5% coverage). Prices based on Genuine cartridges.
Selecting consumables for household printing
If you print mainly text documents, choosing original 21 (C9351AA) cartridges guarantees sharp lettering without smudging. For peace of mind on every purchase, all products are covered under our Returns policy. We dispatch directly from distribution centres in Sydney, Melbourne, Brisbane, Adelaide, and Perth to ensure quick turnaround times. Free delivery applies on all orders over $99. Explore our complete selection of HP ink cartridges to keep your home setup fully supplied.
Pro Tip
Keep spare cartridges sealed in their original protective packaging until immediate installation, as unsealed inkjet cartridges can dry out or deteriorate when exposed to ambient room air over extended periods.
Frequently Asked Questions
How does page coverage affect the yield rating of the 21 (C9351AA) cartridge?
The standard 185-page yield is based on 5% page coverage per standard A4 sheet. Printing dense text, bold headlines, or graphics uses significantly more ink per page, which reduces total page yield accordingly.
Why does ink deplete faster when printing dense documents?
Page yields for 21 (C9351AA) cartridges are calculated using standardized testing documents. Heavy formatting, high text density, and bold typefaces draw a larger volume of ink droplets per page, exhausting the ink reservoir in fewer printed sheets.
What is the shelf life of an unopened 21 (C9351AA) ink cartridge?
Genuine unopened HP 21 (C9351AA) cartridges typically have a shelf life of up to 18 to 24 months when stored in a cool, dry location away from direct sunlight in their original vacuum-sealed packaging.
