Cartridge not recognised
The printer may show incompatible, unsupported, missing, damaged or incorrectly installed cartridge messages.
Help with ink cartridge problems
Follow these straightforward checks if your ink cartridge is not recognised, still shows as empty, produces missing colours or causes poor print quality.
Make a note of the exact printer message and keep the cartridge, protective clips and packaging. Many ink-cartridge problems can be resolved without returning the product.
Choose the issue that matches your printer
Start with the section that most closely describes what is happening.
Ink level still shows empty
Some printers retain the previous ink-level message or do not display reliable ink levels when compatible cartridges are installed.
Missing colour or blank page
Protective tape, blocked vents, dried print heads or interrupted ink flow can prevent one or more colours from printing.
Lines or faded printing
Head cleaning, alignment or cartridge reseating may help with banding, streaks, broken text and weak colours.
Problem after an update
Printer firmware or software changes can sometimes affect cartridge recognition, particularly on certain HP printers.
Cartridge will not fit
Check the cartridge code, printer model, colour position and whether any transport clips or protective covers remain attached.
Ink cartridge not recognised
Recognition errors are often caused by an installation issue, protective material, dirty cartridge contacts or a printer message that has not cleared correctly.
- Confirm that the cartridge code is correct for your exact printer model. Similar-looking cartridges are not always interchangeable.
- Remove the cartridge and check that all protective tape, plastic clips and transport covers have been removed.
- Inspect the cartridge contacts for fingerprints, dust or packaging residue. Do not touch the copper or electronic contact area unnecessarily.
- Reinstall the cartridge firmly in the correct colour position until it is fully seated or clicks into place.
- Close the printer cover and allow the printer time to complete its normal cartridge-checking process.
- If the message remains, switch the printer off, disconnect the power cable for two minutes and then restart it.
Do not force the cartridge into position
If the cartridge does not fit easily, stop and check the cartridge code, orientation and printer model. Forcing it may damage the cartridge holder or printer mechanism.
Protective tape, seals and air vents
Most ink cartridges include protective material to prevent leakage during transport. If any part remains in place, the printer may not recognise the cartridge or ink may not flow correctly.
- Remove the pull tab or coloured protective tape completely.
- Remove any plastic clip covering the print head or outlet.
- Check that the air vent is not covered by label material.
- Do not remove permanent cartridge labels unless specifically instructed.
- Do not pierce, squeeze or shake an ink cartridge aggressively.
Cartridges with a print head
Some cartridges contain their own print head. Avoid touching the nozzle plate and electrical contacts, as oils from your fingers may interfere with printing or recognition.
Individual ink tanks
Individual colour tanks rely on the printer’s permanent print head. Check that the vent is open and that the cartridge is firmly locked into the correct colour slot.
Printer still shows low or empty ink
Some printers estimate ink levels rather than measuring the exact amount inside the cartridge. A low or empty message may therefore remain after a compatible cartridge is installed.
If the printer allows you to continue printing and print quality is normal, the message may simply be an ink-level monitoring limitation rather than a cartridge fault.
- Look for an option such as Continue, Resume, OK or Ignore.
- Check whether the printer asks you to confirm that a replacement cartridge was installed.
- Allow the printer to complete its alignment or cartridge-initialisation process.
- Print a test page to confirm that ink is flowing correctly.
- Contact support if printing remains blocked after the cartridge is reinstalled.
Ink-level warnings are not always accurate
A printer may continue printing even when the displayed level is low or unavailable. Use print quality as the main guide and replace the cartridge when the output begins to fade or a colour stops printing.
Missing colours, blank pages or faded printing
If the printer accepts the cartridge but the page is blank, faded or missing one colour, work through the following checks before running repeated cleaning cycles.
- Print a nozzle-check or print-quality report from the printer maintenance menu.
- Confirm that the correct cartridge is installed in each colour position.
- Check that the vent and ink outlet are not blocked by protective material.
- Run one normal print-head cleaning cycle and print another nozzle check.
- If there is a clear improvement, allow the printer to rest for 20 to 30 minutes before running one further cleaning cycle.
- Stop if repeated cleaning makes no improvement, as excessive cleaning can use a significant amount of ink.
Avoid repeated cleaning cycles
Two or three cleaning cycles are normally enough to determine whether the print head is improving. Running many cycles in succession can waste ink and fill the printer’s internal waste-ink system.
Print-head alignment and print quality
Alignment is different from cleaning. Cleaning helps restore ink flow, while alignment helps correct misplaced lines, blurred text and colour registration.
| Print problem | Likely check | Suggested action |
|---|---|---|
| One colour missing | Vent, seal or blocked nozzle | Check protective material, then run one head-cleaning cycle. |
| Horizontal white lines | Partially blocked print head | Print a nozzle check and run a normal cleaning cycle. |
| Blurred or doubled text | Alignment or paper setting | Run print-head alignment and confirm the correct paper type. |
| Colours look incorrect | Missing colour or wrong print setting | Print a quality report and check colour or grayscale settings. |
| Completely blank page | Seal not removed or no ink flow | Remove the cartridge, check all seals and reinstall it. |
| Ink smudges on paper | Paper type, excess ink or dirty printer path | Use suitable paper, allow drying time and check printer maintenance options. |
Cartridge problems after a firmware update
Some printer updates can change the way cartridges are recognised. This is most commonly reported with certain HP printers, although recognition behaviour can vary by printer model and cartridge range.
If a cartridge worked normally and then became unrecognised immediately after a printer or firmware update, make a note of the printer model, cartridge code, firmware version and exact error message.
- Do not discard the cartridge.
- Do not install repeated replacement cartridges without checking the cause.
- Photograph the printer message where possible.
- Check whether an automatic update was recently installed.
- Visit our dedicated HP firmware guide for further information.
When to contact our support team
Contact us if the printer continues to reject the cartridge after the basic installation checks, or if print quality does not improve after one or two appropriate maintenance cycles.
Please provide:
- Your order number.
- The full printer make and model.
- The cartridge code and colour.
- The exact error message shown.
- A photograph of the cartridge and printer display.
- A nozzle check or test print where possible.
Ink cartridge questions
Why does my printer say the cartridge is incompatible?
The cartridge may be incorrectly seated, the wrong code may have been supplied, protective material may remain attached or the printer may not be reading the cartridge contacts correctly. Remove and reinstall the cartridge before contacting support.
Can I continue printing when the ink level is unavailable?
In many cases, yes. Some printers do not display accurate levels for compatible cartridges. Continue to monitor print quality and replace the cartridge when the output fades or a colour stops printing.
Should I shake an ink cartridge?
No. Ink cartridges should not normally be shaken. Aggressive shaking can cause leakage, air bubbles or ink contamination around the outlet and print head.
How many print-head cleaning cycles should I run?
Start with one cleaning cycle and print a nozzle check. If there is a visible improvement, allow the printer to rest before trying one more. Repeated cleaning with no improvement can waste a large amount of ink.
Why is only one colour missing?
The affected cartridge may still have protective material attached, its vent may be blocked, it may not be seated correctly or the printer’s print head may require cleaning.
Should I return the cartridge immediately?
No. Contact us first. Many recognition and print-quality issues can be resolved through simple checks, and we will provide return instructions if the cartridge needs to be inspected or replaced.
Still having trouble with an ink cartridge?
Contact our UK-based support team with your order number, printer model, cartridge code and the exact issue you are experiencing.