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 out 🙂
As I understand the copy from the tray is not clean,
Don't worry as I'll be glad to help, however, to provide an accurate resolution, I need a few more details:
Did you try cleaning the scanner glass? Both Printers with a flatbed scanner glass and lid & Printers with a document scan feeder
Did you clean the ADF rollers?
While you respond to that, here's a few steps you could perform:
Step 1: Clean the scanner
Fingerprints, smudges, dust, or debris on the scanner glass, under the scanner lid, or in the document feed slot can cause lines and color bands. Clean these parts with a soft, lint-free cloth sprayed with glass cleaner.
Step 2: Clean the ADF rollers
Dust or paper residue on the rollers or separator pad inside the automatic document feeder (ADF) can result in copy quality issues. Open the ADF, and then clean the ADF rollers and separator pad.
Step 3: Change the copy settings
Changing the copy settings, if available, might improve copy quality. Not all printers have the option to change copy quality settings, and some printers have more or less quality options. For specific steps, refer to the printer user guide on HP.com.