Resolve Windows 10 related issues for your HP computers or printers by HP Windows 10 Support Center
Welcome to HP Forums, this is a great place to get support, find answers and tips.
Thank you for posting your query, I'll be more than glad to help you.
I understand that you are facing print quality issues with your HP ENVY 4520 All-in-One Printer.
This issue could occur if the ink nozzles on the cartridge are clogged.
Let's go through a few steps that may help to fix this issue.
And here are a few steps for you in the link: Fixing Print Quality Problems
Also, you may remove one of the cartridges, print a page and then swap it with the other cartridges and check if it is the same issue with both the cartridges when they are installed one at a time.
Let me know how this works.
You have a good day ahead.
Rainbow23 I am an HP Employee If you found this post helpful, you can let others know and also show your appreciation by clicking the “Accept as Solution” button, “Thumbs up" button!
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