If the issue persists or you need further assistance, here's a few more steps:
Solution one: Use genuine HP cartridges
HP recommends that you use genuine HP ink or toner supplies. HP cannot guarantee the quality or reliability of non-HP or refilled cartridges. If you do not use genuine HP cartridges, the steps in this document might not resolve the issue. To check the authenticity of your cartridges, go to hp.com/go/anticounterfeit.
Solution two: Allow automatic servicing to complete after installing a new cartridge
Many print quality problems, such as poor black text or issues that occur with newly installed cartridges, clear up with the printer's automatic servicing routine. There is nothing you need to do. The print quality should start improving in a few hours.
Solution three: Check the paper
The quality and type of paper can affect the print job. Use the following guidelines to make sure that the paper is appropriate. If it is not, load an appropriate paper type.