HP Deskjet 990cxi Ink Cartridges
Shop ink cartridges for your HP Deskjet 990cxi, which uses the HP 45 ink cartridge series. Ink Depot has been supplying reliable consumables for this printer since Aug 2026. Our 4.8 Google rating proves it: we consistently supply premium cartridges backed by rock-solid reliability. The HP Deskjet 990cxi is a legacy desktop inkjet printer designed for daily document printing and text output. Selecting compatible 45 (51645AA) black cartridges helps maintain a low cost per page for routine text documents.
Expected page output and replacement cycles
Page yields for 45 (51645AA) black cartridges are measured under ISO/IEC 24711 standard coverage testing. For regular text document printing, overall page output remains predictable across standard print runs.
| Cartridge Number | Type | Colour | Page Yield | Cost Per Page |
|---|---|---|---|---|
| 45 | Standard | Black | 883 | $0.15 |
Cost Per Page = Total Cartridge Price ÷ Page Yield (at 5% coverage). Prices based on Genuine cartridges.
Choosing between genuine and compatible options
Both genuine HP and compatible alternative cartridges are available for this printer. Under Australian Consumer Law, using compatible cartridges does not void your printer warranty. To understand performance considerations between choices, review our genuine vs compatible cartridges guide.
Best way to stock these cartridges
If you print high volumes of monochrome text documents, choosing compatible 45 (51645AA) cartridges provides a practical budget option, complete with a money back guarantee if they do not perform as expected. For official correspondence, genuine HP cartridges deliver consistent ink formula performance. Free delivery applies on all orders over $99. All items ship directly from warehouses in Perth, Brisbane, Sydney, Melbourne and Adelaide. Browse our full range of HP ink cartridges or check our returns policy for complete purchase confidence.
Cartridge Pro Tip
Because the 45 (51645AA) cartridge integrates the printhead directly into the cartridge unit, every replacement refreshes the firing nozzles automatically, preventing long-term print head wear on the printer.
Frequently Asked Questions
Does the HP 45 (51645AA) cartridge feature an integrated printhead?
Yes, the 45 (51645AA) ink cartridge houses both the ink reservoir and the printhead nozzle array in a single unit. Each cartridge replacement provides a fresh printing mechanism for crisp text.
How does print density setting impact the page output of 45 (51645AA) cartridges?
Lowering print quality settings to draft mode in your printer preferences reduces ink deposit volume per page, extending the overall yield of 45 (51645AA) cartridges when printing internal drafts or routine text.
Can I store spare 45 (51645AA) cartridges long-term before installation?
Yes, unopened 45 (51645AA) cartridges remain stable when stored upright at room temperature away from direct sunlight, maintaining ink viscosity until opened for use.
