Another solution for black printer cartridge problems. It's a software problem! I changed cartridges, cleaned, aligned, etc. and nothing happened. Then unplugged printer from my desk top and plugged it into my lap top. Black printed just fine. I uninstalled all HP printer software from my desk top computer, and downloaded new. Installed new software, plugged printer back into desk top computer, and it works fine.
You shouldn't have to do that, but glad it worked for you.
