Printer won't print black, only blue

The inkjets nozzles in the black print head maybe blocked.
Inkjet printers need to be used frequently to prevent ink drying out and blocking the print head nozzles.
If the print head cleaning maintenance routine does not clear the blockages, then print head needs replacing, but it may be expensive.
It may be more cost effective to buy a later model and better printer than replace the print head.

Check the ink levels and print heads.

Silly question: Did you remove the plastic tape from the bottom of the cartridges when you installed them?

Some printer software that detect ink levels won't recognize a cartridge that's been refilled. They treat the cartridge as empty although you've filled them with ink. You can try removing the HP software that pertains to the printing functions only (not the scanner abilities). You can also do a Power reset. Remove the printer cartridges, turn off the power, remove both the Power cord and USB cord (if applicable) for 10 minutes. After reconnecting the USB and power cords, install the cartridges as you normally would. The printer should treat them as new.

Try to clean cartrige and cartrige carrier conector place with soft erager.Then put cartrige into cartrige holder then gentaly push top of the cartrige sothat a `cat' sound happend, then turn on printer.
I think you will relive
Thank you

There are a few things here that will do this. One is the cartridge is a smart cartridge and unless you reset the chip it either won't print or shows low. If you filled it before then this shouldn't be it. If you have refilled the cart more than a few times they sometimes just stop. This is either the ink has jelled inside or the little feeder sponge is dried out. If you changed ink brands sometimes the ink reacts with the old stuff and jells.The other is the jet or any feeder tubes are plugged with dried ink. Usually happens if you haven't printed for a while. You can try running the cleaning cycle and it will take quite a few of these sometimes before it starts working.

There are a few more tricks for cleaning such as using white vinegar to dissolve dried ink but that's a bit of the messy side sometimes. Usually we have just had to buy a replacement cartridge after spending the time on this. We eventually just got rig of our ink jets and got some of the cheaper color laser printers. Wish we had done that sooner.

clean jets and retry

This is common problem with Brother Printers. I am going to assume you are using Non-Brother branded ink cartridges. Brother cartridges have a cleanser in the ink that most generic cartridges don't have. This in turn causes the jets to clog and not allow ink to pass through them. The fix is to go buy a couple of Brother cartridges and do a cleaning with those cartridges. You may spend some money doing this as a cleaning wastes a lot of ink, but it will clean the injection lines and fix the printer. You could also consider buying a new printer. I know this is not the answer you were looking for, but it is the true answer. I just bought a new printer due to this fact.

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Cartriges have a shelf life. It's printing in blue either because it has dried up or is out. Different cartriges have different timelines but if you haven't been using the printer often, it could have dried up or is simply out of ink. I would suggest first to try cleaning the head of the cartrige where the ink comes out with alcohol and a Q-tip and then if that doesn't work, buying a new black cartrige.

Do you have the operators manual? Run it through a cleaning cycle. Also Xerox's website will guide you through some maintenance steps. If you are using generic wax, you may have clogged the jets.

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