HP Officejet G55 Ink Cartridges
Shop ink cartridges for your HP Officejet G55, which uses the HP 45 ink cartridges series. The HP Officejet G55 is a classic desktop all-in-one built primarily for reliable monochrome text printing and faxing. Ink Depot has been supplying quality consumables for this printer since Aug 2026. Our 4.8 Google rating reflects a long-standing track record of premium cartridge performance. Choosing compatible 45 (51645AA) black cartridges lowers ongoing text printing costs without sacrificing document legibility.
Expected page output and replacement cycles
The HP 45 (51645AA) high-capacity black cartridge is rated using standard ISO/IEC page yield testing at 5% coverage. Designed for high-density pigment black text, it provides steady page output for everyday invoices and letters before needing replacement.
| 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
Under Australian Consumer Law, using compatible cartridges does not void your printer warranty. Compatible 45 (51645AA) cartridges offer a cost-effective alternative for routine printing while maintaining sharp black text output. You can read our detailed genuine vs compatible cartridges comparison guide to see how third-party options perform against original HP supplies.
Smart purchasing and fast delivery
If your daily output consists mainly of standard text documents and black-and-white reports, switching to compatible 45 (51645AA) cartridges provides substantial savings. All compatible products are backed by our money-back guarantee under our returns policy if they fail to perform. Free delivery applies on all orders over $99, with fast dispatch from our national distribution centres in Sydney, Melbourne, Brisbane, Adelaide, and Perth. Browse our complete range of HP ink cartridges for all your home printing requirements.
Pro Tip
HP 45 black cartridges feature an integrated printhead mechanism; replacing the cartridge installs a fresh print nozzle array every time, ensuring crisp monochrome print quality over time.
Frequently Asked Questions
Does the HP 45 black ink cartridge contain pigment ink?
The HP 45 (51645AA) black cartridge uses dense pigment-based ink designed specifically for sharp, smudge-resistant text printing on plain copy paper.
Why does my HP Officejet G55 only use a black cartridge listing on this page?
While the Officejet G55 printer accepts both black and tri-colour cartridges, high-volume monochrome printing heavily relies on the HP 45 (51645AA) high-capacity black cartridge for routine text and fax jobs.
Can I leave a compatible HP 45 cartridge installed if I only print occasionally?
Yes, compatible HP 45 cartridges use stable ink formulations, but to prevent ink drying on the integrated nozzles during long idle periods, printing a test page every few weeks is recommended.
