HP Officejet R45 R65 Ink Cartridges
Shop ink cartridges for your HP Officejet R45 and R65, which use the HP 45 ink cartridge series. The HP Officejet R45 and R65 are reliable flatbed office printers built for clear text documents and everyday copying. Ink Depot has been supplying reliable consumables for these printers since Sep 2026. Our 4.8 Google rating is built on dependable cartridge performance and uncompromising product quality. Because these office printers rely on monochrome printing, running a compatible 45 (51645AA) black cartridge provides significant per-page cost savings during heavy print runs.
Expected page output and replacement cycles
Page yields for HP 45 cartridges are measured according to ISO/IEC 24711 standard testing for monochrome inkjet printing. High-density text coverage will exhaust black ink faster than light draft documents, so monitoring routine document volume helps estimate exact replacement timing.
| 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.
What to know about compatible 45 cartridges
Choosing a compatible alternative offers substantial savings on everyday document printing without sacrificing crisp text definition. Under Australian Consumer Law, using compatible cartridges does not void your printer warranty. Read our genuine vs compatible cartridge guide to compare operational performance and quality standards.
Choosing the right supply option
If you print large volumes of office paperwork, choosing compatible 45 (51645AA) cartridges offers maximum savings, backed by our money back guarantee. For users who prefer original manufacturer ink, genuine options ensure consistent factory-grade output. Stock up on your essential supplies through our HP ink cartridges store. Free delivery applies on all orders over $99, with fast dispatch from our nationwide distribution centres in Sydney, Melbourne, Brisbane, Perth, and Adelaide. For full order policies, visit our returns page.
Pro Tip: Integrated Printhead Design
The HP 45 cartridge features an integrated printhead built directly onto the ink housing, meaning every fresh cartridge installation automatically provides a brand-new printhead mechanism to maintain clean text edges.
Frequently Asked Questions
Do the HP Officejet R45 and R65 use the exact same ink cartridges?
Yes. Both the Officejet R45 and Officejet R65 share identical internal print mechanics and take the exact same HP 45 black ink cartridge series.
Why does the HP 45 cartridge have an integrated printhead?
HP engineered the 45 series with a thermal printhead nozzle array attached directly to the cartridge base. Replacing the ink supply automatically installs fresh nozzles, eliminating permanent printhead clogs inside the printer.
Can I install a compatible HP 45 cartridge alongside existing genuine ink setup?
Yes, compatible 45 cartridges are manufactured to mirror genuine physical dimensions and contact placement precisely, allowing immediate plug-and-play installation without error messages.
How should unused HP 45 cartridges be stored to prevent drying out?
Keep unopened HP 45 cartridges sealed in their original protective foil packaging at room temperature. Prematurely removing the protective tape covering the nozzles can cause ink to dry out or leak before installation.
