HP LaserJet 5Si 5si Mopier 5SiMX 5SiNX Toner Cartridges
Your HP LaserJet 5Si, 5si Mopier, 5SiMX, and 5SiNX printers use the 09A (C3909A) toner cartridge. These heavy-duty monochrome A3 office laser printers are engineered for high-volume departmental print workflows. Ink Depot has been supplying reliable consumables for this printer series since Sep 2026. Our 4.8 Google rating proves it: we consistently supply premium cartridges backed by rock-solid reliability. Replacing empty units with premium compatible 09A (C3909A) Black toner cartridges ensures continuous high-speed text output while maintaining minimal operating expenses.
Expected Page Output and Replacement Cycles
Page yields for monochrome laser cartridges are measured according to ISO/IEC 19752 coverage standards based on standard 5% page coverage. High-coverage printing, such as dense spreadsheets, graphics, or continuous ledger printouts, will deplete black toner faster than standard business letters.
| Cartridge Number | Type | Colour | Page Yield | Cost Per Page |
|---|---|---|---|---|
| 09A | Standard | Black | 15,000 | $0.005 |
Cost Per Page = Total Cartridge Price ÷ Page Yield (at 5% coverage). Prices based on Compatible cartridges.
Choosing Compatible 09A Cartridges
Our compatible 09A (C3909A) toner cartridges provide an economical alternative to brand-name consumables without compromising text clarity or page yield. Under Australian Consumer Law, using compatible cartridges does not void your printer warranty. Read our genuine vs compatible cartridges guide to learn more about how quality compatible options deliver exceptional value for everyday office printing.
Choosing the Right Cartridge Setup
For high-volume text document production, choosing compatible 09A (C3909A) Black toner delivers consistent print contrast across large batch jobs. All compatible cartridges come backed by a money-back guarantee for complete confidence. View our returns policy for details. Free delivery applies on all orders over $99, with orders dispatched quickly from our distribution centers in Perth, Brisbane, Sydney, Melbourne, and Adelaide. Browse our complete range of HP Toner Cartridges today.
Pro Tip
Store spare 09A (C3909A) toner cartridges horizontally in a dark, climate-controlled space to prevent internal toner clumping before installation in high-volume production environments.
Frequently Asked Questions
Do the HP LaserJet 5Si, 5si Mopier, 5SiMX, and 5SiNX all use the same toner cartridges?
Yes. Every printer model in the HP LaserJet 5Si family shares the exact same toner system, taking the high-capacity 09A (C3909A) Black toner cartridge without any compatibility variations between models.
How does 5% page coverage affect actual yield on A3 pages?
The standard 15,000-page yield rating is calculated based on standard A4 documents at 5% coverage. Printing larger A3 sheets or documents with heavy lines and graphics covers a greater surface area, which will naturally reduce total page output per cartridge.
What causes faint vertical lines on printouts when toner levels run low?
As the 09A (C3909A) cartridge reaches depletion, toner settles unevenly across the internal developer roller. Gently removing the cartridge and rocking it side to side redistributes the remaining powder, briefly restoring print density until a new cartridge is installed.
Will compatible 09A cartridges maintain legibility on fine-font text?
Yes. Premium compatible 09A (C3909A) cartridges use formulated micro-fine toner powder designed to match the original melting point and particle size, preserving sharp edges on fine typography and barcode printing.
