HP Deskjet 1120c 1125c Ink Cartridges
Your HP Deskjet 1120c uses the HP 45 ink cartridge series, a long-running monochrome printer configuration engineered to deliver clean text documents and stable grayscale output. Backed by our 4.8 Google rating, we are dedicated to supplying replacements that guarantee exact liquid flow and immaculate background execution. We have been providing reliable replacement alternatives for this specific setup since Jun 2026, helping home offices, small workshops, and everyday users maintain a steady, high-efficiency printing workflow.
Page yield expectations and heavy printing lifecycles
Maintaining high workplace productivity requires transparent oversight over inventory stock levels and individual cartridge capacities. HP establishes expected page yield lifespans for the HP 45 black (51645AA) configurations using standardised manufacturer coverage metrics, which track continuous liquid ink consumption across uniform layout graphics. Review the detailed product options below to assess print capacities before completing your purchase.
| 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.
Genuine and premium compatible replacement ink cartridges
Lowering ongoing commercial or home printing expenses is straightforward when keeping your setup outfitted with high-performance replacement options. Utilising authentic factory-certified original equipment manufacturer (OEM) supplies or premium compatible alternative cartridges ensures total configuration compatibility and uninterrupted up-time. These durable ink cartridges match original structural locks, precise internal nozzle pressures, and dense coverage, ensuring your critical business reports, legal documentation, and administrative manifests retain an entirely professional presentation. Discover more about managing your supply choices by reading our genuine vs compatible cartridges guide.
Best ways to manage your print supply
When your daily schedule involves heavy administrative document production, educational modules, or high-volume report sets, shopping for a backup replacement cartridge provides the most secure protection against unexpected downtime during critical deadlines. Every original or premium third-party replacement ink tank is backed by full warranty cover, giving total financial peace of mind to procurement teams. Free shipping applies to all transactions exceeding $99 (conditions apply). To facilitate rapid logistics nationwide, we dispatch packages directly from regional distribution centres across Sydney, Melbourne, Brisbane, Adelaide, and Perth. Browse our complete range of HP ink cartridges and office supplies to restock your team.
Pro Tip
The HP Deskjet 1120c utilises an integrated printhead mechanism where the actual micro-nozzles are built directly into the base of the HP 45 cartridge structure. To maintain crisp margins and prevent text from showing horizontal blank white lines, always complete an automated printhead alignment sequence via your operating system utility after installing a fresh unit; this calibrates the electronic contact points and ensures uniform fluid deployment across wide sheets.
Frequently Asked Questions
What is the functional difference between genuine and compatible HP 45 ink cartridges?
The main operational difference relates to the original manufacturer and overall printing economy. Genuine HP 45 black cartridges are produced directly by HP to their legacy factory standards, whereas premium compatible alternatives are assembled by third-party specialists to duplicate those physical cartridge shapes and electrical parameters at a lower price point.
Will using a compatible HP 45 black cartridge void my printer's printer warranty?
No, using high-quality compatible alternatives will not void your printer warranty protection under Australian consumer law. Printers are designed to accept alternative matching consumables, and our compatible replacements feature high-grade microchips and matching housing structures to sit properly inside your device carriage.
Why does the page yield differ slightly between the genuine and compatible HP 45 options?
Minor differences in page yield capacity can arise from the precise volume of liquid ink filled during the assembly process. Premium compatible alternatives often maximise the physical space inside the fluid chamber, providing competitive or slightly altered page counts when tested against standard industry text arrays.
