The HP 42X Q5942X Black Toner Cartridge is an original high-capacity HP supply for the HP LaserJet 4250 and 4350 series. Rated for up to 20,000 pages, it suits high-volume offices printing business reports, legal documents and marketing material. Genuine HP Q5942X toner gives rich black output that resists smudging and fading.
Key details
- Brand: HP
- Model: Q5942X (HP 42X)
- Colour: Black
- Page yield: up to 20,000 pages
- Condition: Genuine original HP
- Smudge and fade-resistant output
Suits the following printers
HP LaserJet 4250, HP LaserJet 4350
Every HP 42X Q5942X Black Toner we sell is checked against its listing details before it ships.
Add the HP 42X Q5942X Black Toner to your cart today and it will be on its way within one to two business days.
If you print often, keeping a spare HP 42X Q5942X Black Toner on hand saves downtime when the current one runs low.
Good to know
Which printers does the HP 42X suit?
It is designed for the HP LaserJet 4250 and 4350 series printers.
How many pages will it print from the Q5942X?
The Q5942X is a high-yield cartridge rated for up to 20,000 pages, reducing how often you need to replace it.
How to install the HP 42X Q5942X Black Toner
- Open the front or top cover and let the printer cool for a few minutes if it has just been printing.
- Remove the used cartridge. On printers with a separate drum unit, take out the drum and toner together, then push the lock lever and lift the toner cartridge out of the drum.
- Unpack the new cartridge and gently rock it side to side five or six times to spread the toner evenly. Remove any protective strip or cover.
- Slide the cartridge into place (or into the drum unit until it clicks), refit the assembly and close the cover.
Storage and handling
Keep unopened cartridges in their packaging in a cool, dry place and lay them horizontally. If you spill toner, wipe it up with a dry cloth and cold water rather than a vacuum cleaner.
Getting the most from each cartridge
Page yields such as 20,000 pages are measured at about 5% coverage, so pages with heavy graphics will use toner faster. Printing in draft or toner save mode helps your cartridge last longer, and keeping the paper path clean helps avoid smudges.
Delivery, returns and support
Orders are packed within 1–2 business days and sent with tracking to every Australian state for a flat $19.99 delivery fee. Change your mind? Let us know within 30 days of delivery under our returns policy, and faulty items are covered by Australian Consumer Law. Not sure this is the right part for your machine? Send us your printer model and we will confirm before you order.










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