If you find your HP printer printing blurry, check the ink levels. If they are low, refill them. Change your print quality to higher so the sharpness of your prints increases. Besides, you must ensure that you are using the right paper. Use paper of the correct thickness so that it effectively absorbs the ink. Check that the printheads are aligned properly. https://www.hpprintersupportpro.com/blog/hp-printer-printing-blurry/