My printer is printing with large gaps of missing ink

[RedAngellion]

My HP Envy 4520 is printing pages with huge gaps in the ink. It's hard to explain but here are some pictures to show what's going on. The page I printed VS how it turned out:

https://imgur.com/a/LuQReJt

It was happening with an old set of ink cartridges, and I had a set of unopened Instant Ink cartridges waiting to be installed so I switched those in and nothing changed. I've tried running the cleaning service and all that and still no change.

Please help!

[ShlomiL]

Hi,

Please try aligning the print cartridges and check if that may help, please see Step 12: Align the printer below:

https://support.hp.com/us-en/product/hp-envy-4520-all-in-one-printer-series/5447920/document/c047184...

Also, try changing the print quality to Best and check if you may get better results then.

May you see any difference then?

[RedAngellion]

I can't even perform an alignment because the alignment page comes out to terribly that the scanner doesn't detect it.

[RedAngellion]

I removed the black cartridge and printed in single cartridge mode and the quality is great. It appears the black cartridge I got from HP Instant Ink is bad. What's the best way to resolve this and get a replacement cartridge?