Black Ink fuzzy and faded lines. Cleaning and Alignment not helping. Problem repeats on new tests

[Horsemaker]

I've tried restarting computer and printer. I've tried on Windows 7 and 11.
I've tried two different styles of test pages, multiple cleanings and alignment.
Black vertical lines are fuzzy.
Some letters fade out.
The same problems occur in the same places on new test pages.

Ink was replaced recently with new HP Instant ink, I don't know if it was doing it before that as I usually only print a little text in draft.
Printer has only printed about 600 pages.
The last picture rotated on me. It's the vertical black lines that fuzzy.

Faded Black LinesFuzzy Black Vertical Lines

[Valsimot]

Bad black ink cartridge.

[Horsemaker]

Bad cartridge would be my first guess, but I have 5 copies of the full page shown, as I kept trying cleaning cycles, and each are identical in where they place the errors.