Thank you for joining HP Forums.
This is a great place to get support, find answers to your technical queries.
I understand that the printer has a print quality issue.
Appreciate all your efforts in the troubleshooting steps.
Are you using genuine HP ink cartridge?
Use this link: https://support.hp.com/in-en/product/hp-photosmart-6520-e-all-in-one-printer-series/5169038/model/5271612/document/c03954004 and if you have tried all the troubleshooting steps in this link.
I would personally suggest you contact our HP phone support for one on one interaction.
If your product is out of warranty, then remember to choose the paid options to get the tech support number.
They might have multiple options to help you on this.
Please use the following link to create yourself a case number, then call and it may help speed up the call process:
Step 1. Open link: www.hp.com/contacthp
Step 2. Sign in / sign in as a guest
Step 3. Enter the product number or select to auto detect
Step 4. Scroll down to "Still need help? Complete the form to select your contact options"
Step 5. Scroll down and click: HP contact options - click on Get phone number and phone number appear.
Keep me posted, how it goes! However, I'll try and follow up in next 24 to 48 hours to doublecheck on the issue.
If the information I've provided was helpful, give us some reinforcement by clicking the solution and kudos buttons, that'll help us and others see that we've got the answers!
Have a great day!
Cheers
