Printers are very handy and still in use by most households. Whether it’s flight tickets or the occasional letter, they’re there and ready whenever we need them.
Unless of course if they are used too infrequently and the print heads can become blocked with dried ink.
You may have left your printer for months only to find that when you try and print something, the paper comes out with a patchy print or the black is missing completely
If you have checked the cartridges and they still have ink, then it’s most likely that they need a head clean. Usually, all printers have a head cleaning function built-in, sometimes you need to run this cleaning process 3 or 4 times to get things working. If you’ve run it 5 times and the nozzle check print is still patchy, that’s probably as good as it’s going to get and it may be time for a new printer.